Mochaccino Posted December 17, 2023 Share Posted December 17, 2023 Hello, I have this fossil from the Middle Ordovician Hope shales, Leigh, Shropshire, UK. It was labeled as a carpoid "Anfesta sp.". However I realize that it has complete bilateral symmetry and no plate-like structure, even for a carpoid. Besides, I googled "Anfesta" and that is a Ediacaran organism with triradial symmetry, so evidently incorrect. What could this be? I can't find anything like it online, but maybe a brachiopod internal mold? Link to comment Share on other sites More sharing options...
Mochaccino Posted December 17, 2023 Author Share Posted December 17, 2023 My apologies, I meant to post this in the Fossil ID forum, not here. Could one of the mods move or delete it? @Fossildude19 Link to comment Share on other sites More sharing options...
Kane Posted December 17, 2023 Share Posted December 17, 2023 Done. This to my early morning eyes seems to be a phyllocarid or possibly a bivalve. 1 3 ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
FossilNerd Posted December 17, 2023 Share Posted December 17, 2023 I get a phyllocarid vibe from this one as well, but I’m not certain, and not familiar enough with the geology it was found in. Wait for other opinions. 1 The good thing about science is that it's true whether or not you believe in it. -Neil deGrasse Tyson Everyone you will ever meet knows something you don't. -Bill Nye (The Science Guy) Link to comment Share on other sites More sharing options...
FossilDAWG Posted December 17, 2023 Share Posted December 17, 2023 How certain are you of the locality and age? If it was misidentified could that information be off too? Maybe a label got switched? I ask because this looks similar to a decapod (shrimp) cephalothorax, with a dorsal ridge leading to a pointy rostrum on one end. There were no decapods in the Ordovician. Of course, it might be something else altogether, 1 1 Link to comment Share on other sites More sharing options...
Mochaccino Posted December 17, 2023 Author Share Posted December 17, 2023 4 hours ago, FossilDAWG said: How certain are you of the locality and age? If it was misidentified could that information be off too? Maybe a label got switched? I ask because this looks similar to a decapod (shrimp) cephalothorax, with a dorsal ridge leading to a pointy rostrum on one end. There were no decapods in the Ordovician. Of course, it might be something else altogether, 6 hours ago, Kane said: Done. This to my early morning eyes seems to be a phyllocarid or possibly a bivalve. 5 hours ago, FossilNerd said: I get a phyllocarid vibe from this one as well, but I’m not certain, and not familiar enough with the geology it was found in. Wait for other opinions. Thank you, It is quite possible the locality is wrong as well, as the info is all on one label and might've gotten switched. I'll see if I can find the original info. Link to comment Share on other sites More sharing options...
piranha Posted December 18, 2023 Share Posted December 18, 2023 My first impression was a seed. Two specialists concur with that assessment. A similar analog from Oregon: Menispermaceae: Odontocaryoidea nodulosa Manchester, S.R. 1994 Fruits and Seeds of the Middle Eocene Nut Beds Flora, Clarno Formation, Oregon. Palaeontographica Americana, 58:1-205 PDF LINK 6 1 Link to comment Share on other sites More sharing options...
Mochaccino Posted December 19, 2023 Author Share Posted December 19, 2023 22 hours ago, piranha said: My first impression was a seed. Two specialists concur with that assessment. A similar analog from Oregon: Menispermaceae: Odontocaryoidea nodulosa Manchester, S.R. 1994 Fruits and Seeds of the Middle Eocene Nut Beds Flora, Clarno Formation, Oregon. Palaeontographica Americana, 58:1-205 PDF LINK Interesting, I had not considered that! However according to the seller, whatever it is, the provenance is accurate as he collected it himself. So the Middle Ordovician Hope shales, Leigh, Shropshire, UK. I believe seeds did not exist until the Devonian. Do you think this is possibly a phyllocarid instead? That's the only one among those suggested so far that seems to be consistent with the age. Link to comment Share on other sites More sharing options...
piranha Posted December 19, 2023 Share Posted December 19, 2023 The plot thickens... ...hopefully someone will recognize it soon. Link to comment Share on other sites More sharing options...
Isotelus2883 Posted December 20, 2023 Share Posted December 20, 2023 Perhaps a laterally squashed Redonia anglica? Link to comment Share on other sites More sharing options...
Yoda Posted December 21, 2023 Share Posted December 21, 2023 On 12/18/2023 at 2:00 AM, piranha said: My first impression was a seed. Two specialists concur with that assessment. A similar analog from Oregon: Menispermaceae: Odontocaryoidea nodulosa Manchester, S.R. 1994 Fruits and Seeds of the Middle Eocene Nut Beds Flora, Clarno Formation, Oregon. Palaeontographica Americana, 58:1-205 PDF LINK I agree. It resembles a specimen I have labeled as Trigonocarpus MotM August 2023 - Eclectic Collector Link to comment Share on other sites More sharing options...
Yoda Posted December 21, 2023 Share Posted December 21, 2023 Here is the photo Trigonocarpus Crock Hay MotM August 2023 - Eclectic Collector Link to comment Share on other sites More sharing options...
Isotelus2883 Posted December 21, 2023 Share Posted December 21, 2023 The problem is the two "bumps", which are not found in seeds. You can imagine if something like this was squashed, it might look similar to the fossil. Redonia is also found in the Hope Shs. From Cope, 1999. Link to comment Share on other sites More sharing options...
Danielb Posted December 21, 2023 Share Posted December 21, 2023 Is it just me that can’t see the original photos? For me it looks like this, but it seems like everyone else can see it fine. Link to comment Share on other sites More sharing options...
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