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  1. DavidFass

    three swatara ordovician organisms

    Hi. In this rock from Swatara in PA (ordovician), I see three fossils: (1) Looks like a leaf, about 1" across (2) round stone-like object about 1/2" across, and (3) small rippled shell about 1/4" across. Any IDs would be much appreciated! Thanks!
  2. Spring is finally coming around. Here in Missouri, we are getting a mix of nice weather, lots of rain, and even still some colder frosty days. I was off work yesterday, and the great weather had inspired me to go check out an Ordovician road cut I did some recon on last month. The roadcut isnt very large, but with the hard rain we had received this past week I figured it would be a good chance to rummage through the bedrock and scree pile. Within 5 minutes, I found my first find. It is likley an enrolled Eomonorachus intermedius trilobite. Unfortunately there was a crack running right through it. The trilobite was very small, measuring in at .25 inches. This is were things went wrong. I didn't bring any glue with me, and figured I would chance trying to extract it as-is, even with the crack running through it. Big mistake, as it can out in two pieces. This specimen was missing it's eyes and some shell, so I wasn't too distraught. About 10 minutes later, I found another enrolled specimen, this time with the tail exposed upright. It also measured in a .25 inches in length. It is likley also an Eomonorachus intermedius, but will need cleaned for a confident ID. After extraction, I walked to my car to put up my grinder and I couldn't believe what I saw just laying on the ground. Another trilobite! It is a miracle this bug was intact. I was amazed to turn the trilobite around and see some of its eye lenses looking back at me. It is a great day when you find a trilobite in Missouri with how rare they are, but to find three in one day is downright spectacular. This specimen isn't perfect either. It's compressed, missing it's genal spines, and also has it's tail tucked under the cephalon likley due to compression. Regardless, I am very happy with it. It should clean up well! I also snagged a nice little Isotelus hypostome. After that, I packed up and headed for home. I had a great time out, and will definitely have to check out this location again after time has passed, and some more weathering takes place. Thanks for reading!
  3. Hi everyone, does anyone know what happened to William Hessin's publication "south central ontario fossils" or the website where one can purchase his publication either by book or cd? I wish to obtain a digital copy of his book and if anyone can provide me with a way to contact this guy that would be great.
  4. As an avid fossil collector growing up in Cincinnati, I found that even partially complete echinoderm fossils were as rare as hen's teeth. I did eventually find one edrioasteroid on a rafinesquina shell but it was poorly preserved. I have however found some nice Ordovician echinoderm fossils from Morocco. I will kow tow to you if you happen to find one in the Cincinnatian. Attached are three Moroccan Ordovician echinoderms. Note that the labels are in 12 point font.
  5. I’m about to head out. I should be there in about 90 minutes. This should be a good trip because it’s the very beginning of the fossil hunting season in this area., there have been a number of snows and thaws during the winter, very few people have probably picked over what’s been exposed over the winter yet, not too much weedy overgrowth, and the weather in the mid 60s, can’t get much better than that
  6. After growing up in Cincinnati, the Ordovician has become my favorite fossil period. I would like to acquire an Ordovician scaphopod (tusk shell) in a effort towards completing my mollusc specimens. I have a number of items to trade. This might include an Ordovician Flexicalymene meeki trilobite that I found, or possibly an Ordovician brachiopod or gastropod. I also have other fossils to trade that might be of interest. If you are interested, send me an image of your specimen for trade and I will send you images of items that you might consider trading.
  7. I am attaching two images of an Odovician receptaculite fossil from Scott City, VA. As it was considered to be a sponge when I acquired it I was thrilled because I had only previously seen disarticulated sponge spicules. There appears to be a more recent debate suggesting that receptaculites are algae. If one accepts the first image as the top of the fossil then the structure is consistent with sponge diagrams I saw in a high school Biology class. So how about some opinions on whether or not it is a sponge or fossil algae. So,is this the top? Or is this the top?
  8. BobZombie

    Trace ID

    Trace burrows.. species? Central NYS, glacially transported cobble from till. Likely constrained to upper Devonian to mid Ordovician. Siliciclastic, clast supported, fine sand to silt, little clay, moderately well sorted, sub-angular, quartz, feldspars and lithic fragments, highly porous matrix, 6" on long axis. Thanks in advance..
  9. bigGinthegarden

    Ordovician ID help

    Hello. New member here. Would appreciate some help with an ID, please. Found in Williamson County, Tennessee, USA. Rock formation is Nashville Group (Ordovician). Exposed fossil length is about 1/4" or 6mm. Thank you!
  10. DatFossilBoy

    Trilobites from Wales ID required

    Hello all, Today I found many trilobites from a locality called Gilwern quarry in Wales They are from the Ordovician period. Here are 2 of my best finds. I would love to get an ID on them! The complete one (~2cm) I don’t know what it could be , the second one (just the head) ~1cm is probably Trinucleid? Kind regards Thomas
  11. Hi all! At last Friday’s Dry Dredgers meeting, I handed over the two Ordovician fossils below to Dr. Carl Brett for the Cincinnati Museum Center! Standard business card for scale. This coral, which I have wrongly been identifying as Favosites sp., is from the campus of Hanover College in Indiana, in their Dr. Daryl Karns trail system. This was donated with permission from the Hanover College Geology Faculty. This Treptoceras sp. comes from the US-68 road cut in Maysville, KY, Kope Formation.
  12. Hello Folks, I am slowly learning my way around the website and observed that I had not introduced myself. I am a retired Environmental Interface Research Chemist who has been a lifelong fossil enthusiast. I grew up in Cincinnati and was fortunate enough to take Paleontology and Mineralogy classes at the Cincinnati Museum of Natural History. After the lectures they also distributed free samples of the discussed specimens to students. It is unfortunate for young people today that such resources do not appear to exist any longer. I have discovered that one means of fossil identification that is very useful is to compare your specimen with images on the internet. I am therefore seeking to place good quality images of my identified specimens on the Fossil Forum for this purpose. I also repurposed an old TV cabinet into a fossil display in a manner that others may find useful (photos on the site). I look forward to a lot of fun!!!
  13. Members of the Fossil Forum have been very helpful with previous submissions. I would appreciate comments/suggestions concerning some nautiloid cephalopod fossils that I have. Image 1 is typical of the Ordovician nautiloid cephalopod fossils found in the Cincinnatian region. Given the bryozoan encrustations, it clearly remained on the sediment surface for a period of time. One source suggests that you can only identify the species by slicing them lengthwise and examining the siphuncle; is this true? Images 2a and 2b are images of a significantly larger Ordovician nautiloid cephalopod that I have tentatively identified as a Cameroceras both due to its larger size and the very large siphuncle illustrated in Image 2b. Image 3 is also of a larger nautiloid cephalopod that appears to be a mold. If one assumes that the piece on the right side is part of the same fossil then it displays a quite small diameter siphuncle. The fossil in Image 3 does however appear to contain part of the living chamber. Lastly, Image 4 is of a nice endoceras Ordovician cephalopod from Ontario. This fossil appears to have been buried in fine grain sediments so it may very well have perished from suffocation during a sediment resuspension event. There does appear to be a layer on the surface. This brings me to the question: Did paleozoic cephalopod shells have a skin?
  14. Tidgy's Dad

    Ascocystites drabowensis

    The dimensions given are for the largest specimen. The block is 11.5 com at it's widest point by 10 cm and 2 cm deep. Most of the of the other species ascribed to this genus in Morocco are now considered junior synonyms. See https://link.springer.com/chapter/10.1007%2F978-3-319-04364-7_199 Notice that they are all aligned in one direction as they were buried by a mudflow sweeping in from the continent. The arms, bodies and stems are all pretty much aligned. This seems to have occurred fairly regularly in this area at this time. Also notice younger, smaller specimens have fewer plates and arms.
  15. I found this specimen in the bed of Stonelick Creek in Batavia Ohio. This heavily tumbled specimen was very unlike all of the other Ordovician limestone shale rocks in the bed. Presumably it arrived there through one of three modes: 1) the creek carried it from a more distant source, 2) it could possibly have been carried by a glacier, or 3) Native Americans formerly lived there and it could be a manuport. At first I thought it might have been a meteorite but alas it I concluded it was a fossil due to the low iron content, the relatively low density and the bubbly nature of the specimen. The specimen is about 6 inches long and images coral1 and coral2 display the side and top of the specimen respectively. From the Atlas of Ordovician Life I suspect it is a tabulate coral of the syringophyllidae family and the Calapoecia genus. Is this reasonable? I would appreciate any comments.
  16. L.S., Wanted to raise some awareness on TFF because I expect many here will simply love this: A good friend of mine, Iris van Zelst (geophysicist at the German Aerospace Center in Berlin) has developed this really nice card game centred around the geological time scale: QUARTETnary The gameplay is based on the classic game Quartets (similar to Go Fish and Happy Families), where players try to collect as many sets of four cards as they can. In QUARTETnary, each of the sets represents four major events that took place during a specific geological time period. To win the game, you need to create the most complete timeline of Earth history, all the way from its formation 4.567 billion years ago to the appearance of us humans. The cards have been designed by Lucia Perez-Diaz (Earth scientist and freelance illustrator from the UK). The illustrations look amazing and I really like that they adhered to the official colour scheme of the International Commission on Stratigraphy. Iris sent me this nice set of cards for the Proterozoic: The game includes 15 sets of four cards in total (many featuring fossils): one each for the Hadean, Archean and Proterozoic eons, and one each for the 12 periods of the Phanerozoic. I expect QUARTETnary will become a really fun way to learn about and memorize the different geological units and major events in Earth history. Kind regards, Tim
  17. When I was a young teen in Cincinnati bivalves were called pelecypods. I thought I would share images from my Cincinnatian collection. Photo1 is an Ambonychia bivalve collected and identified by the Cincinnati Dry Dredgers. Photos 2 and 3 are of cymatonata and cyrtodontula bivalves that were sent to me by a friend in Cincinnati. I identified them by comparison with photos on the online Atlas of Ordovician Life (this site specializes in Cincinnatian fossils). Hopefully these photos will assist others in identifying fossils.
  18. Kane

    Ceraurus globulobatis and starfish

    From the album: Trilobites

    Coll. by KB, purchased. Ontario.
  19. Kane

    Ceraurus pleurexanthemus

    From the album: Trilobites

    Coll. by Thomas Whiteley from the Rust Walcott, prepared by me.
  20. minnbuckeye

    My Last Hunt of the Season

    During our last warm spell in November ( a high of 40 may not sound warm to you southerners), I took the opportunity to collect a few buckets of Decorah Shale to process during the cold snowy month of December. Here are some of the fossils found. Nothing too exciting, but fun to find!! @Tidgy's Dad, I would be pleased if you could assist me with my attempted IDs!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! And if there are some that you do not have yet, let me know and I will see about sending. 1. I suspect Platystrophia extensa 2. Sowerbella minnesotensis. pedal valve above convex, brachial valve below concave 3. Sowerbella curdsvillensis. 4. 5. Rostricellula colei has far less costae than the one above and the costae are broad and smooth. 6. Pycnocrinus are prevalent in the Decorah, but mostly small partial stem pieces 7. Endoceras are the most common cephalopod I encounter in this formation, so the Isorthoceras was a welcome find. 8. Interior pedal valve of Strophomena filitexta, showing the well developed ridges for the large muscle attachment. 9. Unknown Strophomena interior pedal valves? At 2 cm wide and lacking the ridges of S filitexta, I am guessing Furcitella scofieldi. 10. The gumdrop bryozoan, Prasapora conoidea, has always been an enjoyment to find. They come in many sizes and shapes. The next one has me a bit confused. Normally Prasapora are NOT attached to anything and show the obvious growth rings underneath. This one obviously is attached to a Strophomena leading me to wonder if it is a sponge or another species of bryozoa instead. Thoughts are welcome. 11. The Decorah Formation yields many Hesperorthis tricenaria. The pedal valve is easy to identify with its beak and its triangular delthyrium. It is the brachial valve that I am not sure of. This is my guess to its identity. Very flat with similar ribbing to the pedal valve Here is a sample that contains what I think are both pedal and brachial valves 12. The solitary rugosa coral, L. profundum, is found every time I hunt the Decorah. Here is a nice specimen in association with a few Sowerbella. But this particular hunt provided me with two unknowns. First, is this a colonial rugosa or just 2 solitary L. profundums side by side. If colonial, I can not find any mention of a species name. The second odd coral is this one. Very small and appears worn even though the matrix it popped out of was not 13. Many species of branching bryozoa are commonly found both loose and in matrix. 14. Pionodema subaequata at the top and Doleroides pervetus below. 15. These two are 3cm by 2 cm, leaving me to think an interior and an exterior surface of a brachial valve of Strophomena septa. The size of this one is 2 cm by 1.5 cm. This pedal valve is quite raised, so I am suspicious it is Oepikina minnesotensis. 16. A possible pedicle valve of Pionodema subequata. 2 cm by 2 cm 16. 17. Brachial valve interiors of Sowerbyella curdsvillensis 18. Inarticulate brachiopods, Lingula. It is difficult to find a pristine one at the site I hunt. But I will keep trying! The name has changed to Pachyglossella eldei. 20. Gastropods are infrequently encountered in the Decorah, yet above and below this formation, they are common.
  21. Collector9658

    Eomonorachus intermedius? Trilobite ID

    I found some interesting specimens today I would like a second opinion on. Thinking both of these essentially complete bugs are Eomonorachus intermedius, but I'm not certain as they are both exposed ventrally. #1 After some cleaning #2- the second ventral specimen here is preserved hiding underneath an Isotelus pygidium and is very tiny! After some cleaning I think both of these partials are Eomonorachus as well. Almost exposed pygidium Half exposed cephalon showing good eye facet detail. Thanks for any feedback. -Jay
  22. Hello all! I was scrolling through my home state’s fossil page when I came across this post from someone claiming they had a “special spot“ in western Kentucky where they found all of these fossils. Someone in the comments inquired about the ID, and he told them they are fossilized jellyfish. Obviously, these are not fossilized jellyfish. My first thought was geodized crinoid calyces, but then I looked closer and counted the plates- six rather than five, which is not what I’m used to for a typical calyx. Any thoughts?
  23. Recently I acquired some microfossil matrix from the Bromide Formation, in Oklahoma. They were of the Pooleville and Mountain Lake Members, containing a very diverse fauna, mostly bryozoans and crinoid arm fragments. While searching through the matrix, my main aim was to find some of the small and young trilobites that are often found here. Also, I had bought a trilobite meraspis previously, from the same locality. It is an enrolled meraspis of a Lonchodomas mcgeheei, from the Pooleville member. Views of the Cephalon and pygidium.  Now, here are the finds. A Cyclospira parva, these were very common and found in all samples of the Pooleville Mbr. These are the trilobites of the Lower Pooleville. What may be a partial Lonchodomas mcgeheei pygidium. It is more likely a brachiopod fragment, however. A proetid free cheek, I think. This one is more likely to be a Homotelus bromidensis cheek. I'm not sure for this cheek. Eoceraurus? Here are the trilobites of the Middle Pooleville Member. Calliops armatus partial pygidium.It is rather fragmented, as sadly most of the microfossils in this material are. This may be a trilobite pygidium, but it seems now that I look at it, it may be a brachiopod. Now here is one of my better finds from the matrix. It is a partial trilobite, with the hypostome in place, unusually. Because the dorsal side is not preserved, I don't know what species it is. Here are the fossils of the Upper Pooleville Member. A picture of some of what I found in the sample. A healthy sized proetid free cheek. Two partial cephalons of Frencrinurus capitonis. Though partial, they still show exquisite detail, including several sharp spines. Last, there is this specimen. I am hoping it is a protaspis of some trilobite, but... Yeah. Doesn't look like it. These samples gave a clear picture of the Bromide Formation, and they were rich with fossil fragments, an excellent test for my microscope.
  24. Kane

    Bumastoides ?bellevillensis

    From the album: Trilobites

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