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Showing most informative content since 04/22/2018 in all areas

  1. 15 likes
    Yesterday I signed over my prized crinoid (my avatar) along with 20 other specimens to the University of Michigan, Museum of Paleontology. With this crinoid I donated 7 other prized crinoids, 2 blastoids, 4 Tully Monsters, 2 brachiopods, 1 Mazon insect wing, 2 corals and a Cooksonia. These will then be loaned to the Museum of Natural History to go on permanent display in the new museum to open in 2019. Hardest part was parting with my avatar crinoid. It is what I consider the finest example of an Arthroacantha from the Arkona Formation at Arkona, Ontario. Not that parting with 4 exquisite Tullys wasn't hard. Hey, I offered and they came and took. I just wanted the museum to open with very nice examples of fossils.
  2. 14 likes
    Hi all! I've been away from the site for a bit - I taught my first historical geology lecture this spring, and ended up spending three nights a week working on a lecture til the wee hours of the morning, and so the last month has left me without enough time to follow up on the forum. I'll try to get caught up over the next few days. I have a bazillion missed messages from people, so I'll get through them ASAP! This weekend I wrote a new (and very long) blog post about the geology, paleontology, and history of the Ashley Phosphate Beds in the Charleston area - a must read for anyone confused about our stratigraphy! http://coastalpaleo.blogspot.com/2018/05/the-ashley-phosphate-beds.html
  3. 14 likes
    Here is a fun collage I slapped together for all the Trilobitaphilatelists.
  4. 14 likes
    I wanted to wait for my "Shop" to be completely done before showing it here. Due to the fact that my oldest child will be graduating high school next month, and my shop will soon be turned in to a graduation party area I have decided to go ahead and show it unfinished. I have always loved science museums, so I decided to just make my own in my own yard. Last summer I put up a 30X50 "pole barn", put in a wood floor and walls, and now I have my own museum. Almost everything in here was collected by myself or my family. This collection is 90% Kansas stuff, but the last photo of the rikers and the glass case is what I call my "exotic" section. All of the stuff there is from other states that I either found myself, or with the aid of fellow Fossil Forum members. (A bunch of my Texas stuff is from the Waco trip that a lot of members went on many years ago.) There is also a prep room with a window (just like all the cool museums) in the corner. Its already a mess, but I hope to keep the mess confined to that area! I still have some work to do, and I doubt it will ever be completely done, but if any of you ever find yourself driving across Kansas I'm only about 20 minutes off of I-70, and if I'm home, you are welcome to stop by. I may even point you to a spot or two where you can find some of your own fossils around here.
  5. 13 likes
    Our favorite auction site has a seller currently trying to sell a rare andsuppisedly real Utahraptor claw! And found in Arizona at that! As of this beware posting of mine, this claw is at around $425 after 13 current bids! It’s a fake!! It is a cast claw imbedded in a cast matrix Block! BEWARE! You can see numerous air bubble imperfections in the “matrix” block and there are obvious air bubble holes/imperfections of the articulating surface of the claw. The claw itself is a direct replica cast from, or actually is, of a cast replica hand claw that is seen often online of a Velociraptor hand claw. I have reported the seller to the auction site. I would suggest you all take a look and also report it as fraudulent. Look at the attached pics:
  6. 12 likes
    Just a heads up to anyone hunting the Potomac (especially) or Calvert cliffs. Stay away!!!! Do not even think about coming for at least a week and better off at 2 weeks or so if you value your life at all. Folks that know me know the area where I usually hunt and in the last 3 days here we've had 16+ inches of rain. It's been biblical. Out of curiosity (and after promising my wife I wouldn't go hunting) I peaked at the cliffs this am between storms and they are torn up as bad as I've ever seen. Hundreds of trees down with 1000+ ton land slides all over. In the 15 minutes I was there watching from a safe location I saw one giant slide and heard another. It is terrible and won't be stable enough to be safe to hunt for some time to come. Beyond that the mud will take a while to wash out. Seriously.... If you value your life stay away and don't be tempted. At my most obsessed I wouldn't have even tried it and that says a lot. Literally anyone that tried to go out today probably would have had a better than average chance of dying and a tooth isn't worth your life. I can't stress enough how bad it looks and it will take a few weeks of dry weather and some good wind to know down the loose stuff and for things to sort out anyways. Just my 2 cents but I've been doing this a while and know with so much material is down it will take months to sort out so a great summer is ahead. Don't rush it and you'll be around to enjoy it. Literally a year or two worth of erosion in 3 days. After thought.... I did hunt the small beach in front of our house some this am while playing with the kids. It almost never produces anything nice (99% small tigers, hemis, bulls, etc) as we are down stream from the formations but this am was different with the river pumping. 3 cows, 3 good makos (biggest almost 2 inches), and 3 nice hemis (biggest two right at 1.5 inches). Not a bad am for a beach where I might find 2 cows on all summer. Good luck to all. It's going to be a great summer if you stay patient and hunt safe/smart.
  7. 12 likes
    Thanks for the tip! To keep you informed: Dr. Dunlop could confirm that the fossil likely is a ventral view of the abdomen of an arachnid from the Trigonotarbida order. He further wrote that, based on the quite elongate shape, it could possibly be related to Anthracosiro, a genus known from the Coal Measures of France and England. However, without more of the animal, it was difficult to identify it any further.
  8. 11 likes
    A number of vertebrae are up for sale from the Kem Kem beds. I would recommend if you have interest in any, please post them here for comment like some of you already have. I've commented on a few. Spinosaurs dorsal vertebra being offered for sale. Please exercise caution on this specimen. It has tons of fill and the centrum shape looks off. Hard to determine if this is a composite or from the same vertebra. Dorsal vertebra should look like this in lateral view. A Carcharodontosaurus centrum being offered for sale. Not sure one can identify this to any specific Dinosaur or Reptile. A Spinosaur caudal vertebra being offered for sale. Not sure what this is, not Spinosaurus. The centrum might be one but not the spines, look like crock. Spines may be composited Two Caudal vertebrae from a Sauropod are being offered. Unfortunately the one on the left is Crocodilian and the one on the right might also be one or theropod, needs cleaning up. Another similar group of Verts is being offered same comments. Neural spines like the one below typically are Croc. Okay not a vert but not dinosaurian as offered. Reptlian
  9. 11 likes
    From the Cabinet of Curiosities: Here is a special Victorian era specimen of Oncolpia (=Brachiolites) elegans. I acquired it from someone who had no idea what they had, for $10 mixed among some other non fossil items. In my opinion this fossil is priceless, it will never be sold or traded, instead it will eventually be donated to an appropriate permanent museum collection. It was originally collected by Joshua Toulmin Smith and was most likely prepared and subsequently labeled by Henry Alleyne Nicholson, who prepared over 4000 glass slides in his career. "Nicholson pioneered the use of thin sections in identifying and interpreting the internal structure of fossil invertebrates" (Long et al. 2003). A true gem of British Palaeontological history! Long, S.L., Taylor, P.D., Baker, S., & Cooper, J. 2003 Some early collectors and collections of fossil sponges represented in the Natural History Museum, London. The Geological Curator, 7:353-362 PDF LINK
  10. 11 likes
    On our favorite auction site, I just happened to notice this Spinosaurus tooth which I deemed at a very affordable price for its alright size of 4.5" (11.43 cm). Although I'm sure there are very knowledgeable and experienced members on this forum who would immediately brush this tooth aside, it was convincingly real until I pulled out my lie detector: photoshop. After some zoom ins and color flopping, I was easily able to distinguish the fake parts of this tooth from real parts. It's composite- and not a very shabby one. I have had my share of time buying spinosaurus teeth, and have seen plenty "scrambled egg" teeth, but this one temporarily convinced me since the filler color in the main photo is similar to the enamel's at first glance. Not bad, eh? Could just be some minor repairs. Thank you, Photoshop. This is at least partially extended, if not composite. The middle section is an absolutely different shade of green. ---- The back of the tooth was what totally blew it. What even is that interior color!? It is supposed to be white. Now the difference is even more clear. The filler bubbles are now fully visible in contrast to the natural enamel lines on the real tooth crown. ---- The same seller has another (more obviously) composited spinosaurus tooth for sale (without describing it as composited). Now that I really have stared at this tooth for some time, I can distinctively make out that which parts of tooth are not real. Too bad. I hope this tooth does not end up in any forum member's collection. Eeeek. The moment when you find out something you want is fake. Just stay safe. The internet is full of traps. FS
  11. 11 likes
    First of all, the list of fish found in Madagascar - there are more than 30 species! So many that I can't treat all of them (and I've never seen some of them). There is relatively old, but good literature on it - Lehman has written one of the most comprehensive publications on this subject: J.-P.Lehman (1952) Etude Complementaire des Poisson de L'Eotrias de Madagascar. Kungl. Svenska Vetenskapsakademiens Handlingar. Fjärde Serien Bd 2 No 6 (in French, 244 pages, 340MB!) Australosomus merlei Piveteau, 1934 is easy to recognize: Small to medium size fish (~ 10 to 15cm / 4 to 6"), fusiform body, relatively small head with a slightly rounded snout. Its dorsal fin is located in the posterior fourth of the body. Caudal fin divided with wide lobes. Scales on the flanks are noticeably stalk-shaped. Ecrinesomus dixoni Woodward, 1910 Small fish with a rounded, laterally flattened body. Snout flattened. Dorsal and anal fins broad based, attached behind the body's midpoint. Caudal fin large, deeply divided (very rare to see). Bobasatrania mahavavica White, 1932 There's quite a confusion between these two fish. Even in publications the same reconstruction (the same drawing!) is sometimes labeled as Bobasatrania and sometimes as Ecrinesomus. In the first publication about Ecrinesomus, one Bobasatrania was mistakenly mixed in between. Bobasatrania has a crooked diamond-shaped body – while Ecrinesomus's anal and dorsal fins start directly opposite. Boreosomus gillioti Priem, 1924 Small to medium sized fish (10 to 20 cm / 4 to 8"). Slender body, dorsal fin small, located before the body's midpoint. Caudal fin divided. Strong, rectangular scales. Parasemionotus labordei Priem, 1924 Small fish (up to 15cm / 6") with a rounded body, somewhat thickset appearance. Broad but short head. Dorsal fin attached to the posterior half of the body. Pectoral and anal fins small. Caudal fin moderately divided. Eyes remarkably large. Teffichthys madagascariensis Piveteau, 1934 (=Perleidus madagascariensis) Medium sized fish with a somewhat thickset appearance. Bulky head. Its dorsal fin is located in the posterior third of the body. Pteronisculus cicatrosus White, 1934 Small to medium fish with fusiform body (less than 15cm / 6" ?). Small dorsal fin, located slightly behind the midpoint of the body, diagonally opposite the anal fin. Big eyes. Relatively long and broad pectoral fins. Comparatively small scales. Pteronisculus macropterus White, 1933 In his 1933 paper, White described two new Pteroniscoids from Madagascar: Pteronisculus cicatrosus , which is rather common and the somewhat rarer Pteronisculus macropterus. According to White, P. macropterus is characterized by an "elongate-fusiform body; maximum depth rather less than length of head with opercular apparatus, and equal to one-quarter total length to base of caudal fin. length of pectoral fin exceeding distance between tip of snout and hinder margin of maxilla. Origin of dorsal fin above fortieth scale-row from pectoral girdle approximately. Scales in more than seventy vertical rows to base of caudal fin, and ornamented with oblique rugae only." Paracentrophorus madagascariensis Piveteau, 1940 Small fish (up to 15cm / 6") with a rounded body, somewhat thickset appearance. Dorsal fin attached to the posterior half of the body. Pectoral and anal fin relatively large. Anal fin starts well behind end of dorsal fin. Caudal fin moderately divided. Eyes remarkably large. Icarealcyon malagasium Beltan, 1984 Icarealcyon can be easily mixed up with Parasemionotus; characteristic are the huge pectoral fins. Due to its enormous pectoral fins, Icarealcyon malagasium was described by Beltan as a "poisson volant" - a "flying fish" - in the family Semonotidae (not related to what is now known as "flying fish" - these are Exocoetidae in the order Beloniformes). You would expect flying fish to be fast swimmers - the rather thickset appearance of Icarealcyon more likely hints to slow swimmers with relatively high maneuverability (comparable to Albertonia from British Columbia). Fig. C is Icarealcyon - the reconstruction is not quite correct. Saurichthys madagascariensis Piveteau, 1945 Medium sized fish with elongated, streamlined jaws. Head elongated. Dorsal fin almost at the end of the body, opposite the anal fin. Small scales. Whiteia woodwardi Moy-Thomas, 1935 Massive body. Pectoral fin attached slightly before the first dorsal fin. Piveteauia madagascariensis Lehman 1952 More slender body. Pectoral fin attached well before first dorsal fin lobe. Ventral fin opposite to first dorsal fin lobe. Have fun Thomas PS: If you are interested in Lehman's paper send me a PM with your email address (remember - 340MB!)
  12. 11 likes
    A few tips for getting better ID's. First, make the object you are trying to get an ID for be the central object of the photo. Not your hand. Put the object on a neutral colored background and photograph it as close up as possible. Then crop your pictures. Using your hand for scale is no good, we don't know how big your hand is. Make sure the photo is well lit and focused. Second, use a scale rule (preferably metric; millimeters and centimeters) we have members from all over the world. The U.S. is about the only country that does not use the metric system Coins for scale are not good. A member in Belgium probably has no idea how big a U.S. quarter is, and we here have no idea how big a Chinese Yuan is. If you dont have a rule, tell us in the post how big it is. Length, width, height, thickness etc. Third, give as detailed info as possible as to where it was found. State, County, Country, Province, Parish. Was it in a river, a beach find, a quarry? If you know the geologic info, tell us. If not do not guess, if we have the right info on where it was found, that can be obtained. Lastly, don't expect miracles on your items. We are mostly amateurs on here. We can and do make mistakes. If the item is really worn, don't expect an exact Id. But I promise we will do the very best we can, or try to direct you to someone who could possibly ID your item.
  13. 11 likes
    You have a polished rock. There is a large industry that produces these types of decorative polished rocks in all sizes, from many types of rock. It is hard to identify the type of rock that was used to make Yours. Pictures from @Troodon's thread about the Tucson rock show this year.
  14. 11 likes
    Location: Morocco Kem Kem Beds To often Crocodile jaws are composited with Spinosaurid teeth and sold as Spinosaurus jaws. So the purpose of this topic is to show the diagnostic features of Spinosaurid jaws First its extremely rare that any jaw from this region contains functional teeth. Germ/unerupted teeth are more common but those are typically well into the tooth cavity and not protuding above the jaw line. So its highly probable that those you see sold with teeth are composited. We currently do not know if there is a variation between the jaws of the different Spinosaurids described or yet to be discovered in this region so there could be some difference between them but the general characteristics should be similar. Here is a composite skull in private hands and paleontologist Cristophe Hendrickx drawing of that skull Dentary: This is Stromers original plate. 1) You can see the variation in the lateral (side) view of jaw. A very wide anterior end and more V shaped toward the hinge. So jaw sections that you see sold which are straight across are probably crocodile. 2) The teeth are also not positioned in a straight line, and not always next to one another. 3) The most telling feature is the lip on the labial side. It should be present across the entire length of the jaw 4) Broken dentary jaw sections being sold should wide not narrow like croc's Closeup of Lip Close up of germ/unerupted teeth Premaxillary/Maxillary Much more robust than dentary however the lip feature is still present but on the lingual side. Very wide in lateral view. http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0144695 dal Sasso, C.; Maganuco, S.; Buffetaut, E.; Mendez, M.A. (2005). New information on the skull of the enigmatic theropod Spinosaurus with remarks on its sizes and affinities. Journal of Vertebrate Paleontology. 25 (4): 888–896. doi:10.1671/0272-4634(2005)025[0888:NIOTSO]2.0.CO;2 Maxilla for sale with composite teeth
  15. 10 likes
    Add injury to disease or genetics. Below is a modern great hammerhead (Sphyrna mokarran) lower jaw with pathological teeth caused by a sting ray barb injury to the jaw. The below picture shows a ray barb embedded in this jaw: The lower jaw teeth files just above the ray barb are crossed probably as a result of the jaw damage caused by the barb. The lower jaw also has an obvious pathology in the symphyseal teeth as a result of the sting ray barb. It looks like two rows of pathological alternate teeth (blue) with a single row of symphyseal teeth (red). Usually Sphyrna mokarran have only a medial tooth in the lower symphysis or sometimes two teeth. Three teeth like those shown below are really unusual. : Some modern pathological teeth including bull and hammerhead. I agree with what others have already said in this post that you need to know the age of the formation that this tooth is from for an accurate id. Marco Sr.
  16. 10 likes
    Good catch, after reorienting the photo, I agree it is a partial Arctinurus pygidium. The terraced ventral preservation is very unexpected and unusual. I need new glasses! lol
  17. 10 likes
    I was looking in my geology report on the Waldron Shale just to be on the safe side becauae something about this triggered a memory and I found this. The resemblance of the two is why im posting this. I took a picture of it because I have not had time to scan the report. To me it looks like a Lichas boltoni pygidium. I searched the name and was unable to see if it was changed and is invalid. I've hunted the Waldron many many times and have never seen a crinoid that looked like that, but always find one or two of these. This is just an observation and I could be wrong, but thats the good thing. If im wrong, I've learned something new.
  18. 10 likes
    Cretodus crassidens tooth (with bonus fish vertebra) Catoma Creek, Montgomery, Montgomery Co., Alabama Upper Cretaceous (Upper Santonian) Tombigbee Sand Member, Eutaw Formation Found 2 May 2018, prep completed 9 May 2018
  19. 10 likes
    A Second Specimen of an adult oviraptorid Citipati osmolskae associated with a Nest of Eggs from Ukhaa Tolgod, Omnogov Aimag, Mongolia has been published http://digitallibrary.amnh.org/handle/2246/6858 The first published nest Second Specimen @-Andy- @HamptonsDoc
  20. 10 likes
    It's the distal growth plate (epiphysis) of a mammal femur. Looks like it may be horse, but you can compare it to these:
  21. 9 likes
    Took our 4-year-old on a little fossil hunting trip to Craigleith, Ontario today. She had a couple nice finds (the kid knows a trilobite pygidium when she sees one!) but we were really hoping to find a whole bug. We were in luck! I’m so pleased with this find. I was looking through broken slabs of shale, prying it apart with my hands, and this little dude was just sitting inches away watching me! I think it’s pseudogygites latimarginatus again.
  22. 9 likes
    The Field Museum has revealed the name of the new titanosaur that is being installed in Stanley Field Hall in the next few weeks. His scientific name is Patagotitan mayorum. He lived about 100 million years ago in what is now Patagonia, Argentina. The spanish word maximo translates to "maximum" or "most" in English. This name references his massive size! The largest dinosaur ever discovered is on his way to the Field Museum and we can't wait for you to meet him. Our giant pre-historic friend, Máximo the Titanosaur, will make his debut at the museum this June. This tremendous titan weighed about 70 tons, roughly as much as 10 African elephants. Máximo is about 122 feet in length. To put that in Chicago terms, he’s as long as two accordion CTA buses. Máximo’s head will reach the second-story balcony, perfect for selfies! https://www.fieldmuseum.org/about/press/biggest-dinosaur-ever-discovered-coming-field-museum-2018-thanks-gift-kenneth-c-griffin
  23. 9 likes
    I would not consider the first tooth since its missing an unknown amount of the tip. The second tooth is in better shape but a bit pricy and not common. Nice sauropod teeth from the Morisson are not cheap. The next question that needs to be addressed is the ID which I have a difficult problem with Diplodocidae since they are all peg type teeth. The subfamily Apatosaurinae's we have two genus Apatosaurus and Brontosaurus which I doubt you can distinguish between their teeth. Then there are the Diplodocinae's which includes Diplodocus and Barosaurus. The dealer PaleoGallery put this comparison together to clarify the distinction but there is lots of variations in teeth of the. Your tooth looks more like a Diplodocinae but I'm not sure. Bunch of Apatosaurus teeth Diplodocid Tooth
  24. 9 likes
    Great post, Don. I would also add these: Taking photos: When getting photos, try to take pictures looking directly down at the item. Obliquely angled photos can distort diagnostic details. Take photos of top, bottom, and all sides. This will help immensely with IDs. Also, natural sunlight is great for photographing fossils. Don't get too close to the fossil. Make sure the item is in focus, not the background. You can get greater clarity with cellphone cameras if you take the pictures outdoors. Keep an open mind on your finds. If you come here expecting someone to corroborate your thinking, you may walk away disappointed. The people who answer in many cases have multiple years, even decades, of experience. Please try to understand what they are saying, and why. Not every round rock is an egg, not every pointed rock is a tooth. Mother Nature makes some magnificent look-a-likes. Say thank you when you get an answer! Even if it wasn't the one you were hoping for. This may seem like common sense, but I find many people lacking in that these days. We take time to type out answers, provide examples, extra images, research, and evidence, and try to help as much as possible. A "thank you" serves as a nice reminder of why we do this, which is, ... just for the love of doing it. No Pay. No reward other than informing you about your find. Please keep in mind: Sometimes, despite our best efforts, we may get things wrong, or end up with no consensus on an item. If you don't agree with an ID, just say so in a calm manner. Many of us are amateurs - some more experienced than others. We also have professional Paleontologists who are members. We are giving you our best ideas of what you have. If you do not agree, you are entitled to your opinion. There is no need for any unpleasantness if you don't agree with us. Please take your item to the nearest museum, or local college geological/paleontological professor, and ask for some clarification. Sometimes, pictures do not do justice to an item, and it may need to be seen in hand to make a positive ID.
  25. 9 likes
    It appears to be a bone from Pelagornis mauretanicus. It is often sold by moroccans as pterosaur but is actually a toothed bird. It looks very similar to the to many specimens I have from that species. These bones too are hollow but are more robust and not as elongated as those of the pterosaurs like Phosphatodraco, which I also have numerous bones from as well. Lets see what others have to say. Thanks for sharing. Seth
  26. 9 likes
    Another small, but noteworthy find; a bryozoan, Taeniopora exigua, only my second.
  27. 9 likes
    Theropod dinosaur teeth are usually ziphodont, but the morphology of the denticles varies between species and clades. Gorgosaurus (a tyrannosaurid) and Dromaeosaurus (a dromaeosaurid) both have rectangular denticles despite differences in body size and shape and tooth size. Saurornitholestes (a dromaeosaurid) has pointed denticles that, over time, can wear down to resemble those of Dromaeosaurus. Troodontids (like Troodon) have unique hooked denticles that differ significantly from those of dromaeosaurids. Paper looks at the biomechanics of these different morphologies, not for everyone but interesting. https://www.cell.com/current-biology/fulltext/S0960-9822(18)30371-3
  28. 9 likes
    I think it may be a ray dermal denticle.
  29. 9 likes
    Welcome to the forum. First we need to know where its from, locality and formation. Looks like Lance Fm . If its the Hell Creek or Lance Formation then what I see is a Edmontosaurus tooth (maybe 2) and possibly tendon from one. The tooth looks Ceratopsian but there is no way to positively say its a Triceratops horridus. There are multiple Ceratopsian in these formations and the teeth all look the same. Hard to much else with the dim photos.
  30. 9 likes
    These are proximal phalanges, Jack. The off-set to accommodate the retractable claw is on the medial phalanx.
  31. 8 likes
    A solitary rugose coral, a zaphrentidid, i think. Nice specimen.
  32. 8 likes
    I responded to Hipockets earlier in a private email but I thought I would respond here too. My guess is this is part of a crab dactyl. I think the straight part is where it inserts into the crab claw and the holes are where the mineralized bumps on the dactyl have been dissolved away. It looks like the whole thing has been replaced by phosphatic minerals. Here's a comparison claw photo that is from the Fossil Forum.
  33. 8 likes
    Probably a pyrite or altered pyrite (limonite?). Pyrite is common in limestones. Because it was found in a fossiliferous limestone quarry a garnet is unlikely since garnet is an igneous or metamorphic mineral. The fossils would be destroyed if there were enough metamorphism to form a garnet.
  34. 8 likes
  35. 8 likes
    The skull you see in the photos was collected in 1916 from what is known today as Dinosaur Provincial Park, AB by famous paleontologist C.H. Sternberg for the NHM London. The remains were described as 'nothing but rubbish' by palaeontologist A.S. Woodward and sat in collections for the best part of a century. It was not until the nineties that a team of scientists, including Andy Farke and NHM dinolab found the remains and realized that they might be of a new species! As with most centrosaurine ceratopsians, the key was in the pattern of ornamentation (spikes and hooks) at the rear of the parietal, the bone forming the central section of the frill. Although fragmentary and in poor condition, enough unique features were identified to confirm it as a new species. Named Spinops sterbergorum in honor of Sternberg, who first discovered it 102 year ago. Original paper http://www.app.pan.pl/article/item/app20100121.html Photos and information courtesy of Andrew Knapp
  36. 8 likes
    In Whitely, Kloc, and Brett (2002) Trilobites of New York: An Illustrated Guide they list a few other trilobites in Crown Point Formation in both Essex County and Valcour Island, as part of the Chazy Group: Ceratocara shawi i(Valcour Island) Isotelus jacobus (Essex Cty) Thaleops longispina (Essex Cty) Cybeloides prima (Valcour Island) Ceraurinella latipygia (Valcour Island) Physemetaspis insularis (Valcour Island) I understand your focus here is on Vermont, but we also know geologic formations don't always follow state lines! Hopefully this helps and not muddles!
  37. 8 likes
    That's a brachiopod from the family craniidae, Philhedra crenistriata. Beautiful and great find.
  38. 8 likes
    Social Media had comments from marine paleontologists/biologists and others ... : none had seen it : not aware that it was published : part of a private collection : vertebrae to small for the skull probably not associated : Gordon Hubbell knows nothing about it which is very odd : most very suspicious about it : Special exhibit by museum, so possible reconstruction for exhibit. One commented that it did not correspond to the research they did in estimating body length: https://www.researchgate.net/publication/308891065_SIMPLIFYING_THE_METHODS_-_BODY_LENGTH_ESTIMATES_FOR_CARCHAROCLES_MEGALODON_USING_ASSOCIATED_TOOTH_SETS_AND_JAW_WIDTH_RELATED_DATA_FROM_GREAT_WHITE_SHARKS_AND_MAKOS
  39. 8 likes
    Peat Burns


    I'm just going to throw this out as a point of information and not as an opinion one way or another on the specimen in question. Some very old plant remains can remain unlithified and when dry would float. I am currently working with a 5 million year-old deposit that has a variety of nuts including hickory and hazelnut. These are contemporaneous with Teleoceras, borophagidae, camellids, etc. These nuts and associated wood are not lithified and remain organic and float when dry. Just throwing this out there so that potential fossils don't get tossed. Context is key.
  40. 8 likes
  41. 8 likes
    Looks like vesicular basalt to me. The pink dot would be a plagioclase feldspar remnant.
  42. 8 likes
    The Classic by Nigel Hughes: "Lament for the passing of the Trilobites" Oh, look, what can this be, swimming all over the Cambrian sea? Is it Spriqqina?, no, it cannot be, some new and strange innovation maybe. Come, hear the tale of the Trilobites days, niches exploited in so many ways! Where did they come from and where did they go? I've just spent three years and I still do not know. Paradoxides is not what it seems, more or less segments, who knows what that means? Trilobite workers in such consternation, intraspecific phenotypic variation. Phacopids with their schizochroal eyes more or less lenses, was that really wise? Natural selection it made the decision, advantages reaped from peripheral vision. So why did these marvelous creatures decline? Was it meteorite impacts or just too much wine? Was it drying of oceans on Pangea's shores? Was it natural progression of one of Cope's laws? Alas! It seems there's no end to debate to the ultimate cause which determined their fate, for Trilobite workers would be out of a job, so if you discover, Just Keep shut your gob! That was the tale of the Trilobites days, and the niches exploited in so many ways! Where did they come from and where did they go? I'll spend all my life and I'll still never know!
  43. 8 likes
    Looks a bit like a ganoid scale, with the shiny bumps being the enamel. I'd wait for someone who knows more about it than I do.
  44. 7 likes
    Owners should be aware that the typical matrix material from China is extremely hydrophylic. The hapless individual who decides to give an egg a good Spring cleaning featuring a "bath" will be very sorry. I have used a damp paper towel to wipe away surface dust during prep and this could be done to spruce up a dusty display egg, but any more "in depth" exposure to water is potentially ruinous. So, for storage or display minimizing dust exposure; so you don't need to "clean" it and avoidance of temp extremes probably covers most potential pitfalls.
  45. 7 likes
    Hello all, ToothMan here. This is my first trip report! I just joined this great forum. Stumbled upon it the other day. I have only been collecting about a year, and mostly fossilized sharks teeth at that. I also collect ray plates, I have one porpoise tooth, two crocodile teeth, some crab claw fossils, mostly marine creatures but focus mainly on shark teeth. I'm looking forward to expanding my searches for more than just teeth. Here is a link https://imgur.com/gallery/CO2q2gg to an imgur gallery from my most recent trip. Trip report below! I have some great teeth in my collection but wanted to report on my best finds to date, which ocurred over the past two days. I had some exceptional luck, paired with a keen eye, resulting in my first two Megalodon teeth ever found. I live in Solomon's, Md, and frequent some of the same sites I'm sure some of you do. Those being Calvert Cliffs, Brownies beach, flag ponds, etc. I also hunt Cove point a lot. My grandparents have a house down there so I frequent that beach often. Ive had my best finds so far there over the past two days. Last night I was there at low tide around 10:30 and found my first Megalodon tooth! I was ecstatic! I didnt think you could find those here. I thought they were mostly at calvert cliffs but I guess some wash down. I found a bunch of smaller teeth as well. Then today, I went back around noon for low tide again. Did my usual walk up to the point, picking up a bunch of small teeth along the way couple with a few hemi's here and there. I walked around past the lightouse and began finding some really nice mako's! I absolutely love finding mako teeth. Found some in the waves crashing and even up at the high tide line. The water,was still a little cold today but bearable. I wore shorts and sandals and took my sandals off, walking thru knee deep water one way searching, and up on the beach looking on the way back. I went home, happy with these finds. But I decided to return around 5 even though the tide was coming back in and I didnt expect to find much. But boy was I wrong. By this point it was really windy and the waves were really large, crashing and moving material all over the place. This is good as it turns up more stuff, but its harder to collect. You have to be quick. I felt like the karate kid snatching a fly out of my trainers hand diving in to grab teeth I had just spotted before they were swept away by the surf! Many were lost that I couldnt grab quick enough. I was picking up quite a few teeth though, a bunch of makos and some nice hemi's, when I saw a huge mako! A wave had just crashed on it, I let it recede, spotted ir again, and snatched it up before another wave could sweep it away. I had been out for hours now, and was really happy with my finds. I decided to take one last walk around the point and then I saw my second meg ever sticking up out of the sand. Only the top gum line was exposed and my heart jumped as I knew exactly what it was and it looked big! I scooped it up out of the sand and cleaned the barnacles off it. I was and am so happy! Never thought id be finding Megalodon teeth. Ive had the fossil hunting bug for about two years now. It really is addicting. Happy hunting, all. -ToothMan
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    @Troodon @ynot @Jesuslover340 @Boesse @WhodamanHD @siteseer @sixgill pete @SailingAlongToo @HoppeHunting I sent pics of my Georgia tooth to the Calvert Marine Museum. Dr. Stephen J. Godfrey and the other paleo experts replied. They say it's definitely not a cetacean. They believe it's Thecachampsa which they find there. I will label it Gavialosuchus for now.
  47. 7 likes
    Foot and base ready for paint Skull being added This is a cliff hanger post...will have to wait till next week
  48. 7 likes
    Mood-a-Rama have produced some of my most treasured plastic dinos figures to date. Originally their machines grew in prominence at the 1964 NY Worlds Fair they can still be found (as most of out members from across the pond will know) in many museums and zoos in Florida and Illisnois. I had a pocket full of dollar bills ready to spend on watching those brilliant machines make them just for me. Dinosaurs on their way to the 1964 New York World Fair via barge on the Hudson River. Next is the Invicta Plastics line of 23 dinosaur and prehistoric animals toys, produced in conjunction with the British Museum of Natural History starting in 1974. These I believe were distributed world wide and are recognised by many as the ones they owned as kids. Ironically I have ended up living no more than 5 miles away from where the factory was. In in our garden
  49. 7 likes
    Recently, I have obtained a Wikipedia account so that I could update articles on some of Vermont’s geologic formations. The first of which I have made is the Ordovician age Crown Point Formation, in which I have collected many rocks completely covered in fossil invertebrates. Although I am unsure as to how far this formation goes (possibly extending into New York as well),localities known for having some of the most fossils from the formation include the towns of Panton and Isle La Motte. In creating the list, my main source of information was Paleontology of the Lake Champlain Basin in Vermont, as well as my own observations of what fossils were collected by myself and other members of the Burlington Gem & Mineral Club when we collected specimens from private quarries in Panton, VT last October. However, as my main source was written in 1962, the names and classification for some of the fauna included in the list may have names that are dubious, and the list itself if subject to change. If there is any further information that should be added to the article, please let me know, or edit the page responsibly (basing your facts/information with resources). Note: I have not added algae & porifera yet, so this post (and the Wikipedia article) will be edited. The Crown Point Formation Cephalopods Maclurites magnus Stereospyroceras champlainensis Vaginoceras oppletum Vaningenoceras sp. Proteoceras perkinsi Proteoceras pulchrum Plectoceras jason Nanno sp. Trilobites Bumastus erautusi Bumastus globosus Cryptolithus tesselatus Eoharpes antiquatus Flexicalymene senaria Isotelus gigas Pliomerops canadensis Vogdesia bearsi Echinoderms Dendrinocrinus alternatus Brachipods Atleasma multicostum Camerella varians Macrocoelia champlainensis Corals Streptelasma expansum Foerstephyllum wissleri Lambeophyllum profundum Bryozoans Praspora orientalis Rhinidictya fenestrata Stictopora ramosa
  50. 7 likes
    Check out the chompers on the Diplodocus top and Apatosaurus bottom.