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  1. Jaybot

    Bivalve, Solemya radiata

    From the album: Neutache Shoreline

    Found in Chanute Shale. Feb, 2024

    © CC BY-NC

  2. JamieLynn

    Arctica naviclara GR

  3. Geo-Reinier

    Bivalve

    Bivalve Geology: London Clay Formation Period: Palaeogene Location: Sindlesham, Englan
  4. ClearLake

    Penn Dixie Lunulicardium? Bivalve

    Here is a quick and (hopefully) easy question for all you Penn Dixie (New York, Erie County) or bivalve experts out there. In going through some of the material I collected last summer, I came across this very nice, but small (1.1 X 1.0 CM) bivalve. It looks most like Lunulicardium eriensis figured on page 160/161 of Wilsons Field Guide to the Fossil of New York. But the book lists it as from the Upper Devonian Canadaway Group and I can't seem to find any reference to it (after a quick search) from the Middle Devonian Moscow Group present at Penn Dixie. My question is: is my ID incorrect or did I just not dig deep enough to find reference to it from Penn Dixie or the Middle Devonian? Thanks for any help. @Fossildude19 @Kane, @Jeffrey P and any others.
  5. Philip Ogley

    Invertebrate or shell?

    I recently came across this specimen in a chalk cliff in Normandy, France, near the town of Livarot. I was wondering if anyone could advise me what it might be? Fish, or shell, or something else? In advance, thanks.
  6. I recently came across a fossilised shell in a chalk cliff in Normandy, France, near the town of Livarot. There were other shells and invertebrates, but this was very clear and beautiful. It's only about 2 cm wide, and I was wondering if anyone could advise me what it might be? In advance, thanks.
  7. suburbanamateur

    Bivalve fossil or something more recent?

    I was at Atwater Beach at Shorewood, WI for a couple of hours today because a cursory online search showed that it’s a place where people have supposedly found Silurian Reef fossils. I did not find anything of note except this rock that looks like a bunch of clams fell on wet concrete. I’m only second-guessing myself because the beach is littered with tiny mussel shells, as well, and I know it would not that that long under the right conditions for bivalve shells and sediment to become squished together into one mass. I have found some rocks that definitely looked like that. But, this one is much heavier and I only see what looks like indentations, not the shells themselves. Not to mention, the patterns on the ridges do not look like those of the native mussel shells that litter the beach. The second picture is the back of the thing.
  8. From the album: Invertebrates

    Typhloesus wellsi Melton & Scott, 1973 Early Carboniferous Serpukhovian Heath Formation Bear Gulch Montana USA In the beginning, it used to be believed that Typhloesus were conodont animals, a group of extinct agnathan vertebrates. The conodont teeth however were actually located in the gut contents of the Typhloesus, meaning that while it wasn't a conodont, they were a part of its diet. A new paper published revealed several potential mollusk-like features of the animal.
  9. Good morning! Asking for help identifying 3 fossils (two on one rock) found in riverbed in Val Verde county near Del Rio, Texas. The first 4 images are of one rock with two features. The shell imprint might be a Pecten Texana bivalve (from online fossil ID site)? The other feature might be some form of sponge like the family Clionaida?? Both features are covered with fine crystals giving a lovely glitter - any thoughts on how/why that process happened? Final three images I think are a random rock, but the shape does mimic an image online of a vertebrate toe-claw of some sort, so curious about this. Thanks in advance for any thoughts!
  10. citronkitten

    bivalve1 a.jpg

  11. citronkitten

    bivalve4.jpg

  12. citronkitten

    bivalve3.jpg

  13. citronkitten

    bivalve2 b.jpg

  14. citronkitten

    bivalve2 a.jpg

  15. citronkitten

    bivalve1 b.jpg

  16. These are very common at an exposure of what I believe to be the Monterey formation (Miocene) in Santa Barbara county, California. They look quite different from most pectinid fossils I've seen in southern CA. Any ideas on ID, or references I should take a look at for this area? Thanks!
  17. Alvrr.0

    Nautilus?

    I was walking in a beach in Algarrobo, Chile (Cretaceous formation) and I found this big fossil. I can't pick it because its too big and its illegal here so i can only take a picture. (my hand to comparation)
  18. Fossil N00b

    Large Bivalve Shell

    To preface, I know nothing about fossils or paleontology (hence username). I just stumbled upon this yesterday and thought it was cool. I was wondering if there is any way to tell how old it is and generally how rare or common this type of find is. Location is coastal South Carolina Lowcountry. I found it on an island that is part of a public wildlife refuge. You can access a beach on the island. The forested land drops down about 4-6 feet to the sandy beach. I saw the sheer cliff face and thought "I'd bet you could find some fossils in there" and sure enough I saw this sticking out of the dirt/clay so I dug it out. I am assuming it is very old because it is much larger than any other seashell I've seen on that beach and it has a different ribbed texture. Also I found it far away and higher up from the current high tide line in the dirt (not sand), so it must be from an era where the sea levels were much higher. It measures 4"x3.75"x1.25". I'm also wondering what the best way to clean this is? Thanks, and let me know if there is any more information I should provide.
  19. SharkySarah

    Oyster, Pycnodonte percrassa

    From the album: Miocene, Maryland and Virginia, USA

    Calvert formation. Scale in cm. Calvert co. Maryland.
  20. SharkySarah

    ‘Ark shell’ Dallarca sp.

    From the album: Miocene, Maryland and Virginia, USA

    Calvert formation Calvert co. Maryland.
  21. Found this specimen when hunting just outside Danville, PA in a roadcut near the Susquehanna river. This is from the same visit as my previous post. The location is Trimmers Rock formation. My best guess is Leiorhynchus but I'm pretty stumped on this one.
  22. PHFossilGuy

    Trimmers Rock finds from Danville PA

    Found these specimens when hunting just outside Danville, PA in a roadcut near the Susquehanna river. The location is Trimmers Rock formation. I'm fairly certain that these are brachiopods but I haven't been able to ID them with any certainty. Mainly at that site we find beautiful Mucrospirifer specimens. However, these specimens appear larger and don't, to me, seem to be Mucrospifier. Most of the research I've done has yielded IDs that seem to be typically smaller than what I found. The first image shows the two parts together, the second shows them side by side with the top piece flipped over, the third shows the bottom piece and the fourth shows the top piece. My best guess is Leiorhynchus.
  23. Tidgy's Dad

    Adam's Early / Lower Devonian

    The Devonian period is known as "The Age of Fish", but could also be known as "The Age of Brachiopods." In the Early / Lower Devonian, brachiopods reached the height of their diversity towards its end in the Emsian. We see the ancestral groups occurring, lingulids, craniids, orthids, protorthids, pentamerids, rhynchonellids and strophomenids, as well as the later successful groups we have seen before such as atrypids, athyrids and orthotetids, plus the rise of spiriferids, spiriferinids and productids and the beginning of the terebratulids. By the end of the Devonian , several of these groups are extinct or severely reduced in importance and brachiopods never quite recover. Also, the Devonian is the last time we see trilobites with such variation, large sizes and numbers and orthocerids too are much more uncommon after the rise of the goniatites. The massive tabulate coral reefs also disappear after the Devonian. Fascinating period and I hope to share some of its wonders with you. Equally, a lot of this is rather new to me, so I would be very grateful for any assistance, corrections or further information on my specimens. Thank you. The Early Devonian epoch is split into three stages, so let's start with the first of those, the Lochkovian, that began about 419 mya and finished roughly 411 mya. I have been sent a nice selection of brachiopods from the Kalkberg Formation, Helderberg Group by the Mighty @Misha, mostly. But the kind gentleperson also sent me this fascinating little bryozoan hash : It is dominated by fenestellids, which is usually the case in the Devonian, but other orders sill occur. These ones, I think, are Fenestella, but there are so many species in the formation that I wont take a guess as to species : Not sure what this one is ;
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