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Found 323 results

  1. I found this while perusing my local beach. It originate off the coast and washed up on shore. It’s in fossiliferous limestone on a bivalve cast. I really can’t figure out what these are. I am specifically talking about the radiating fossils in the top margin of the photo. If anyone has ideas it would be appreciated
  2. Need help identifying this bivalve

    Attached is a bivalve I found in the Bradenton, FL area. It looks like a “cats-paw”. Can someone help me with the identification of this fine fossil? Thanks!
  3. These shells all look similar in nature except the last one, pictured by itself. Any way to identify, specifically? Thank You! Freshwater Creek, very slick light brown clay bottom which is blue grey once penetrated and dug. Also sand.
  4. Lopha species

    Good morning all. I have what I believe to be a Lopha bivalve from the upper Jurassic period from China. It measures 8.2 x 5.1 cm and has growth lines(?). Can anyone provide additional information or a correction if required?
  5. California bivalve ID

    Hi everyone, I have recently received this fossil as part of a trade with @Huntonia the bivalve comes from California, but other than that I have no more information. I am guessing it is from somewhere in the cenozoic which is an era that I am not highly familiar with. Any info would be great, Thank you.
  6. Bivalve IDs from SC coast

    All of these were found beach combing in Charleston, SC and all were caked with what I believe is limestone. A. Not sure on this one. Thought clam before pulling away some limestone but now thinking oyster? About 5cm wide. B. Scallops, wondering type and age if identifiable About 3 cm tall. C. Was thinking scallop on this one but it doesn’t seem to have the same vertical lines, they’re all horizontal. Roughly 9cm tall. Thank you all in advance! I’ll be posting some corals and bones tomorrow if I have no luck finding anything myself
  7. What shell is this? (Found at Lulworth)

    Found this at Lulworth Cove which is a Late Jurassic to Mid Cretaceous area.
  8. Whitby area find; Devils Toenail?

    As well as lots of the usual belemnites and ammonites, my daughter found this today on a beach in the Whitby area. It’s unlike anything we’ve found before; am I right in thinking it’s a ‘devil’s toenail’ (gryphaea?)
  9. Just a rock, or a fossil bivalve?

    Happy new year. This is my first attempt at a post, so try and go easy. I respect the depth and breadth of knowledge in this forum. Thanks for yours in advance. Unfortunately I do not have a proper provenance for this specimen. This peice was purchased at auction with a rock lot, silified chalcedony (agate), and I was surprised at the symmetry and shape. My amateur mind brought me to fossil bivalve. Another specimen from the same lot shows this exact shape and general size, so here I am. What are your thoughts? Thanks again. 125mm x 115mm x 60mm 1216g or 2lb 10oz
  10. hi guys i recently found this spiny jurassic bivalve, the matrix is very soft (i started prep with a in vise), but the spines are fairly delicate so i felt that wasnt the best method, is there anyone that would be willing to prep it, i can send more photos and the measurements are 11 x 12 x 8 cm, but i am on a low budget so a uk preparator would be favourable but if need be i can ship worldwide (also it has potentially both valves but not sure on that happy christmas will
  11. I just received this nice Aviculopecten bivalve from Mazon Creek today. What catches my eye is the thing extending from the top of the shell. It almost looks like it could be the siphon protruding outwards. I haven't seen a similar specimen before. Any thoughts?
  12. Pennsylvanian Bivalves

    Here are two Pennsylvanian bivalves I have not been able to ID. I've seen some similar looking ones but in all honesty, I find that most bivalves look the same to me. The first is from the LaSalle Limestone Member of the Bond Formation, Oglesby, IL.
  13. This next species is the second most common animal found in the Essex portion of the Mazon Creek deposit. While there are over a dozen described bivalves found in the Mazon Creek deposit, Mazonomya is by far the most abundant. It is restricted to the Essex (marine) portion of the deposit, where in some areas have been found to make as much as 70 percent of all bivalves collected. At one collecting site, these clams are so common the area has been nicknamed Chowder Flats. Despite the abundance of specimens, Mazonomya was not formally described until 2011. For years it had been misidentified as a type of bivalve named Edmondia. Current research has shown it is actually a Solemyid. Before formal description, Mazon collectors referred to these bivalves as clam-clams due to the fact that they are often preserved in a death position with both valves opened. Mazonomya is the largest clam found in the deposit . While quite rare, specimens have been found over 4 centimeters in length. preservation can be excellent and in some cases, soft tissue can be preserved. Specimens have been found with preserved “death trails”. Solemyids are still found today in oxygen poor and sulfide rich marshes. This first specimen is the largest in my collection. The valves measure almost 4 centimeters. There is also some evidence of the hinge ligament (soft tissue) between the valves.
  14. Unknown Bivalve

    I cannot prep this Lower Oxford Clay bivalve beyond what you see as its in quite a fragile state, I’ve identified it as a species of Meleagrinella would you agree @oxford clay keith
  15. Crassostrea??

    So I only have the faintest idea of what this could be. I vote for the oyster crassostrea since that's what I was told. But now someone told me it was a rudist and im a bit confused. Could it be cretaceous?
  16. Indiana Ordovician Bivalve ID

    Over the weekend I found this bivalve while collecting at the St. Leon, Indiana roadcut. I posted it in the Hunting Trip section, but received no ID on this piece, so I figured that I would put it here to see if some Member could give me an ID. I have never found one like this before nor can I find a similar one while checking various web pages. Thanks
  17. Fall Break Fossil Trips

    The next few days are fall break for me, so I'm home from school. I decided to take the day today to explore two sites in Northern Illinois. The first is an outcrop of the Upper Ordovician Maquoketa Group in Kendall County, IL. I learned about this site from a recent trip report posted here, and found it after a little detective work. I was hoping to find Tentaculites oswegoensis, a small conical fossil of unknown affinities which is only found in this area. It only took me a few minutes before I found a few. I only stayed for 20 minutes or so, as Tentaculites is really the only well preserved fossil in these exposures. There were some brachiopod and bryozoan fragments, but nothing noteworthy.
  18. ID for this bivalve from Morocco

    Anybody have any idea on the indentification and age for this bivalve? Purchased online ex china (was advertised as from the "Devonian of Yunnan", but is clearly from younger deposits of Morocco). I have found conflicting ages on the net: either Cretaceous or Eocene. Some say from the Dakhla region others from the Essouria region.
  19. Hornby Island fossil ID help

    Part 2, 2nd photo of bivalve found on Fossil Beach, Hornby Island, Sept 13, 2019
  20. Hornby Island fossil ID help

    Found on Hornby Island, Fossil Beach, September 13, 2019. Need help identifying this fossil. Looks like a bivalve to me but i am still pretty new to fossil identification. I will have to post a ‘part 2’ to upload the second photo.
  21. Is this a fossil or what is it

    Sorry I don't know where this comes from exactly. It was found at an estate sale in Texas. Was told it was a part of a collectors pieces from Southwest U.S. and was presented as Native American. So far Native American people think it is a fossil so here I am asking your opinion. It's heavy, fits in the palm of your hand, has a noticeable single ridge on the humped side, has a hole in the top and a hole in the flatter side; is black in color with many grey channels or etchings on the humped side. In your opinion is this a fossil and if so any idea what it is of? If it helps, it feels kind of cool to touch. Thank you for your interest and time.
  22. 4 large Florida fossil shells!

    Hello all! Last October, Ken @digit gifted me and Viola some large Florida fossil shells. I took ownership of 4 shells and Viola took the rest. Now that I'm almost done labeling all of my fossils, I would like to put a genus and perhaps even a species for each of my specimens - any and all help is much appreciated - perhaps @MikeR can provide some assistance? And, Ken, are these from "Cookiecutter Creek"? And what age should I put to them? Specimen #1: A bivalve - perhaps Mercenaria sp.? Specimen #2: Another bivalve - perhaps Dinocardium sp.? Specimen #3: A gastropod with the opening on the left, so I think it might be Sinistrofulgur contrarium - is this correct? Specimen #4: Another gastropod - perhaps Melongena corona? Thanks in advance! Monica
  23. Bivalve (Ambonychia)

    From the album Finds From the Ordovician -488 to 443 MYA-

    From the Georgian Bay Formation.
  24. Bivalve (Ambonychia)

    From the album Finds From the Ordovician -488 to 443 MYA-

    From the Georgian Bay Formation.
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