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Found 1,143 results

  1. Hey all! Between an ill-timed conference, election month, the pandemic, online teaching, and a few other issues, I was way too stressed out and busy to be on here regularly since October. Also, in mid November we began digging up a small basilosaurid whale in Harleyville, SC - very likely to be the most completely known specimen of the dwarf basilosaurid Chrysocetus, and perhaps the most important basilosaurid discovery in North America of my lifetime. I did manage to write a blog post about our fieldwork, so as an apology for being AWOL and only getting back to identifying cetacean stuff a few months later, I offer this writeup as penance! It feels good to be back in the saddle again. Cheers, Bobby
  2. What would you do?

    So I have found a significant "load" of mostly bivalves in a very deep water mudstone. This mudstone is very hard, when it fractures it is a lot like obsidian, extremely sharp and extremely hard. The specimen in this image is 3 x 5mm. The calcium shell has very little identifiable structures, yet the cast part seems "fair" crisp. If the shell was removed perhaps shell parts would be shown in the cast for ID. Would you remove the shell (if so how? acidic acid?). Any ideas on how to soften this mudstone, it is as hard but not as brittle as any shale I have seen. G picks don't see to do anything but an 8 pound sledge works:( Imaging done with a Panasonic G9 and Olympus 60mm macro lens using focus stacking.
  3. Do you see any obvious red fkag with this one? It is described as Zanthopsis dufouri, 8×7×5 cm, Eocene (47.8-56 m/y), from the French region of Aude. It llooks very nice, but what both attracts and puzzles me it that it appears ti be "sitting" onto its matrix, like a jewel on a silk cushion. What do you thing? An excellent prep work, or...? Auf Deutsch übersetzen
  4. New AMScope using Astro 224 camea

    5 days late my scope arrives late yesterday. Put it together before bed time:) I had read here I believe that you could adapt the triocular camera adapter by using a .96" EP holder. I did but I got rid of the AM supplied connector and used a .96 (with electric tape) to 1 1/4" adapter. Using the snout (1 1/4") that came with my Astro 224 camera it works. Downside is very high Power. However when I am not removing tiny Eocene invertebrates the high power images can be useful (although I do have a regular macro setup for bigger finds). Here is how I got the attached 5 image stack. I use SharpCap to capture single snaps to a folder (Using PNG/color). Then place them in Photoshop in layers, and then align and focus stack. Will be useful in helping to identify the species of snail that this is. I put a .5 inexpensive reduce on the 224 to get usable scale (it is going to be great for real micro fossils and water life in my creek. Snail in image is 2mm long, so while big for a micro fossil I think it still can be called one:)! Not using the 224 that much since I got the larger sensor 294, so its new use will find it atop a microscope instead of a telescope:)I captured the image out to ShapeCap (astronomy software) on my desk using the 50" 4K Tv to view. All in all very happy with the setup. 3x-10x is perfect for digging the small guys out of matrix, high mag's for shell features for species ID.
  5. Potomac tooth ID?

    I found both of these on the Potomac in a unique site with Paleocene Eocene AND Miocene exposures. I was not able to identify them, does anyone know what they could be?
  6. Need some ID help on this one. Eocene, Keasey Formation, and an inclusion or something inside a concretion. Size of the whole piece is 12 x 15 cm, weighs about 6 pounds. Image 1 - Mollusk on top of something that has included into the matrix #2 is a close up of the mollusk and surrounding area Closeup of the inclusion material More images to follow.
  7. I think I've found my "home" here. I have well over 50 pieces (a couple are large - 10-25 pounds) of formation that I've collected over the last three months to "investigate". Mostly sandstone and what I think is deep water mudstone (thought it was shale at first but no layering). Will try the Hydrogen Peroxide to dissolve the sandstones but am at a loss for the mudstones. the mudstones are extremely hard but contain lots of micro deep water (>200 meters) fossils. Any advice? I've included an image in the what I think is a softer mudstone higher up in the Keasy. This is juvenile Dentalium agassizi (20mm in Length) I believe but after a 30 year break I've just gotten back into the game and may be erroneous in my ID. Interesting point is that specimens of Dentalium agassizi were used as the "wampum" of the North American Pacific Coast tribes (have a long PDF on it if any one is interested (Phd thesis I found).
  8. Nut Impression?

    Hi folks, I was looking through some of my older fossils (by which I mean the ones I've had the longest, not the oldest in terms of geologic time) and I was happy to see this guy again. This is Eocene shale from the John Day Fossil Beds in Oregon, acquired back in the day when they did guided tours of the Painted Hills and let you keep some stuff. I've long assumed it to be the impression of a nut of some kind. Was wondering if anyone else had some thoughts on it? The impression of interest is small, probably about 1 inch in diameter.
  9. Oligocene fossils ID

    .These fossils are from Romania. They look like crustaceans ichnofossils. If these Eocene or Oligocene fossils are really traces of crustaceans then what genus did make them? If you think that you can identify them write your opinion here. Thank you very much.
  10. My youngest son found this many years ago. When he found it, (lifting big slabs of rock) it was very appearent that is was going to fall apart. I picked up my little 2oz bottle of super glue and was going to glue it up so that it had a better chance of making the trip home? Well, that didnt work so good. I put the tip of the bottle, ( I use those little needle tips) where I wanted to put glue. It wasnt comeing out so I squeezed harder. Big mistake! The tip popped off and the glue came out like a river! Frigin glue everywhere!!! Anyways, the kid was snoopin in some boxes and totes I have in one of my garages and ran into this piece again. About 5 hours later, it came out somewhat decent? I know most folks are gunna love this but seeing it up close and personal I get really picky. I still have bad memories of all the glue! These are some kind of sycamore seed pods from the Green River Formation This is how it came out of the tote. After about 5 hours of air scribe work and lots of concentration A close up of the multi seed pods
  11. Acrhelia singleyi  

    I'd help please. The vendor showed me her monitor screen, showing the hard to read journal entries from the 1950's 1960's. The name shown seems like it should be spelled Astrhelia, not finding what singleyi means? Pictures of Astrhelia palmata Fossilized Coral is a good match. Eocene Claiborne Formation. Stone City, Texas Age range: 33.9 to 11.608 Ma 11 mm long.
  12. Whiskey Bridge Gastropod?

    Hi Everyone. I found this gastropod at Whiskey Bridge, near Bryan, Texas two years ago which so far I've been unable to identify. Whiskey Bridge is a marine Eocene site, Crockett Formation, Stone City Member. The specimen is between a half and three quarters of an inch. Thanks. Any ideas would be appreciated.
  13. Merry Christmas to everybody! I am just catching up posting some cool finds from a few short trips I've made recently in Maryland--going back through time--Miocene, Eocene, Paleocene. (In the interest of time, I'm only posting the highlights, not everything I found, and not all of what my kids found.) Miocene-- After some heavy rains I snuck out early on a Friday for a quick solo trip to the Calvert Cliffs. Conditions were actually not great, as the water was still a little muddy and the waves were pretty rough due to blustery winds. After a couple of hours I was not finding much and getting ready to head out (dejected) to warm up with a hot cup of coffee. But just then the fossil gods took pity on me and uncovered this awesome mako. At just over 2", it's in perfect shape and my personal best! I took a quick video collecting it to share with my kids here: https://youtu.be/SItWtdYw7SQ
  14. Hello, I found this piece of petrified wood last month. It comes from Middle Eocene (37-35 million years old) terrestrial sediments, from the Yegua Formation of eastern Texas. What I love about this piece, is that it is a piece from the bark of the tree. The tree that this specimen belonged to, was some kind of hardwood species (angiosperm), probably something like maple or birch, judging by the structure of the wood in one of the endcuts/endgrains. What is so special about this piece, is that the bark side is covered in some sort of carbon film material, which gives it a nice, dark brown-black coloration. What is also very intriguing about this specimen, is that it has a couple of oval, conical shaped holes. They have a diameter of 5-6 millimeters, and a depth of 3-5 millimeters. At first, I thought these were the egg niches of cerambycid beetles. But they don’t quite match the shape of beetle egg niches, or other insects burrows that I’ve seen online. The egg niches of beetles have a slit at the bottom of the dent. They are also shallower than the dents in my piece of petrified wood, and are almost never arranged in a way, that is parallel to the wood. Now, I’m starting to think that they might be feeding holes, done by a woodpecker while foraging for food. From the information I’ve seen online, and the pictures that I’ve seen, they very closely resemble the holes in my piece of wood. Foraging holes done by woodpeckers are elongated, and cone-shaped (meaning that they narrow out into a point at the bottom of the hole. They are often aligned parallel to the direction of the trunk, and have a more neatly arranged orientation, than insect burrows/borings. The holes in my specimen meet all of those characteristics. They size is also what you would expect from woodpecker foraging holes. Here is the specimen Here I’ve highlighted the holes in the specimen Here are some close-ups of some of the holes. (Notice how they narrow down to the bottom, which is a characteristic of woodpecker foraging holes.) I wanted to know what you guys think of this.
  15. Modern cuttlefish jaw?

    Hi guys, found this a while ago, I assume it is modern as it seems to be too soft to be mineralised but thought it was pretty cool anyway, found in bracklesham bay, it’s definitely some sort of cephalopod jaw so cuttlefish may be the only option
  16. Finds from Thorness Bay

    Hi My wife and I found these three fossils yesterday at Thorness Bay on the Isle of Wight. They were beach finds rather than in situ but the rocks there are Bembridge Limestone and the Bembridge Marls of Eocene age (and pre Grande Coupure so older than 34ma). I think that A and B are mammal calcaneum but am not sure of species (or even if it is possible to identify to that level from the bones I have) - Any suggestions to help with identification or sources I could use to identify would be very much appreciated. Item 3 is a mammal jaw, I think a left mandible, I am pretty sure that it is from a Plagiolophus (major as it is quite large) but again would appreciate confirmation or knowledge of a good source for ID's as what I have access too is quite limited for identification purposes. Thanks in advance Martyn
  17. HI all, Hope everyone has been ok in this crazy year. We were able to self isolate (by about 20 miles) this summer and visited our favourite spot for a bit of fossil hunting near Princeton in South-West B.C. Canada. Our site is near the ghost town of Blakeburn, which can be a neat diversion when you need to take a break from staring at rocks all day. Here are pics of some of the finds from 2020. Pics aren't the best, finds are very small - my hubby has very sharp eyes!! Enjoy!
  18. Hi everyone! A couple of weeks ago I aqcuired some microfossil samples, one of which was a sample from the Lede Zand, Lede Formation, Oosterzele, Belgium (Eocene, Lutetian, 44 mya). The sample is very rich in Foraminifera & shell fragments, but I also managed to find a tiny shark tooth. While I already searched at belgiansharkteeth.be I can't seem to find a match, perhaps due to it being so small. So I was wondering if anyone here might be able to help me out, I would be very gratefull. Thank you in advance!
  19. Brazos river scale/scute/bark???

    Hi everyone. Today I had this surface find on a Brazos River mound. Striated face looked like wood, but turned around and looked similar to bone(?). The cross section is whitish. [LxWxT] 1.250” x 0.500” x 0.125”. Could it be a scale/scute or actually wood? Thank you.
  20. I recently found this 9mm by 7mm specimen in matrix from the Eocene Nanjemoy Formatiion of Virginia. I think it is a piece of a Chimaera tooth plate. However, in collecting the Nanjemoy Formation in Virginia for over twenty years I have never found a Chimaera tooth plate or a fragment of one. For that reason I don't want to rule out a coral fragment. However, I haven't found a piece of coral in this formation before either. For comparison, a Chimaera tooth plate (25mm by 16mm) from the Paleocene Aquia Formation of Maryland: What do you think (especially the invertebrate/coral experts)? Marco Sr.
  21. Here's a part counterpart of a leaf I split from the shales of the Allenby Formation at a road cut north west of Princeton, BC. This is the main collection site along the road that runs along the eastern shore of the Tullameen River. Has anybody seen a similar leaf and been able to identify it from Paleocene or Eocene deposits? The veins remind me of Tsukada sp. but this leaf is much narrower. I've also considered a species of Betula (Beech) but again either the leaves are too wide or the serrated edges are larger than what's indicated on this leaf. I'm down to a species of Alnus (Alder) but still can't nail it down. Being a vertebrate guy I need a little help here please.
  22. I have already posted pictures of this partial jaw in a topic “The most rare fossil on your collection” in “Member Collections”. However, I would like to start a thread here in “Partners in Paleontology - Member Contributions to Science” so I can discuss any updates with this partial jaw. I found this partial jaw ( 3mm by 3mm by 1mm) in February 2019 in matrix from the Eocene, Nanjemoy Formation, Potapaco B Member in Virginia. Below are pictures that I took of the partial jaw: I sent these pictures and then the specimen itself to Dr. Ken Rose who is a Johns Hopkins University emeritus and who is associated with the Smithsonian Institution. From looking at the pictures Ken had originally thought that the specimen might be from a hedgehog. However, after receiving and seeing the specimen itself, I got the following statement in an e-mail from Ken “I’ve had a chance to look at your jaw, and it turns out to be significant. It’s not a hedgehog. This is the first primate jaw I know of from the east coast. By all means search the concentrate for any other pieces that could relate to it (premolars would be especially useful)”. This is an example demonstrating that even very good pictures may not be adequate to get an accurate ID of a specimen. Because of the rarity of the specimen I donated it to the Smithsonian Institution. This fossil actually caused the USGS and Dr. Weems to relook at the age of the Eocene Potapaco B Member of the Nanjemoy Formation in Virginia where it was found. I sent matrix samples to the USGS from the hole where the specimen was found and they confirmed that the layer was the Potapaco B Member of the Nanjemoy Formation by looking at the dinoflagellates in the matrix samples. However, Dr. Rose determined that the features of the specimen where much more primitive than the published NP11 date of that layer suggested. So Dr. Weems looked back at all of the research and core samples on the Nanjemoy Formation and determined that the Potapaco B Member of the Nanjemoy Formation was actually about a million years older than previously reported and was in the top of NP10 versus in NP 11. So the age of the specimen was tentatively determined to be 54 to 54.5 Ma. A paper would have been published this spring/summer but Covid-19 stopped everything cold. The Dr. Rose's lab was closed and he wasn't able to compare primate specimens from museum collections because the museums were closed. However progress has been made recently and comparisons with other fossil primate specimens have been completed and a paper is in preparation (first draft is almost done). Figures have been drafted, but there is a problem with the resolution of the scanned images of the jaw, so the jaw may have to be rescanned which requires sending it back to North Carolina. However, optimistically Dr. Rose will submit the paper by the end of this year. I can't say anything about the ID of the specimen until the paper is released. Below is a figure showing representative lower dentitions of Omomyid primates from researchgate.net: Below are pictures showing an artist conception of what an Omomyid primate looked like (alamy stock photo) and a representative Omomyid skull both from Wikipedia.org: Marco Sr.
  23. Some examples of hyperdeveloped corallites in genera belonging to the Stylophoridae family. Certain specialists have come to describe them as aberrant or anomalous. In my modest opinion overdeveloped is a more appropriate qualifier. I hope you find them interesting or at least curious. Cheers. Astrocoenia lobatorotundata (Michelin, 1842) hiperdesarrollado Priaboniense Astrocoenia octopartita (Oppenheim, 1901) hiperdesarrollado Priaboniense Stylocoenia taurinensis (Michelin, 1842) hiperdesarrollado Priaboniense
  24. Castle Hayne fm Mystery Fossil

    I found this mystery fossil at the Castle Hayne Quarry near Wilmington, North Carolina over 15 years ago. It was in limestone of the Eocene age Castle Hayne Fm. It consists of parallel shallow indentations that have grayish looking coatings in the bottom of them. I have had suggestions that it was a plant impression, soft coral, and bryozoan. I don't know what fossil forum to have it identified when nobody is sure if it's plant or animal. Any suggestions? The long direction of the specimen is about 3 inches by two or two and a half inches. 7.5 cm by 6 cm