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Showing results for tags 'annelid'.
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From the album: Invertebrates
Polychaeta non det. Early Carboniferous Serphukovian Heath Formation Bear Gulch Montana USA-
- annelid
- polychaeta
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Hello, it’s been awhile! I’ve been opening up some Mazon Pit 11 stuff and came across this thing. I try to keep myself pretty grounded when it comes to Mazon stuff, because I’m horribly bad at ID’ing anything in a concretion. That said, any chance this is an annelid worm? Thank you as always!
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- mazon
- mazon creek
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Hello, I got this cool little Scolecodont (annelid worm jaw) from the Ordovician Fairview Formation of Kentucky. It's tiny as one would expect at 3 mm long. Does anyone know what species it's from? I found a reference for IDing scolecodonts from Cincinnati Ohio: http://drydredgers.org/scolec2.htm, and Nereigenys seems like a decent match with my specimen, though the first two "hooks" are much more prominent on mine. These are also different localities.
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- scolecodont
- annelid
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Hello everyone!! I feel very lucky to belong to this forum, I never stop learning and the atmosphere is great, I only regret not being able to contribute more than praise for you! I have a query, I have seen some marks on shark teeth (Megalodon, Miocene), which remind me of annelids, Is what I'm saying crazy or does it make any sense? Cheers Manuel
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- shark shark tooth
- tooth
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I was once a teaching assistant for a Diversity of Life course and it really left an indelible imprint on my awareness of diversity in general, as well as consolidated my fondness for all living things that began in childhood. It's incredible how successful the "worm" body plan has been and how this has been such an integral bauplan since the earliest phases of animal life. Being a bilaterian essentially equates to a wormy relative (i.e. acorn worms for we deuterostomes) so in honour of that on this auspicious hump day, please share your worms - the more priapulid the better I'm not a hundred percent certain of the current systematics but these two samples from the early Cambrian Chengjiang Biota (Maotianshan Shales, Heilinpu Formation, China) were once considered stem priapulids (or nematomorphs). They are the iconic Maotianshania cylindrica and Cricocosmia jinningensis respectfully. I got these back when I wasn't 100% sure they were offering real Cambrian fossils so bought carefully and sparingly until I was able to prove they were in fact real. I let so many great fossils pass me by out of mistrust and I'm kicking myself to this day. The preparation was pretty raw but they're still amazing under magnification. And the other fossil is a beautiful peanut worm Lecthaylus gregarius from the Lockport Shale, Blue Island, Illinois (Silurian). Phallic-shaped worms with eversible pharynx or proboscis like these were likely the first "predators" in the earliest animal communities before they too were sucked up in the ongoing arms race by enigmatic arthropods like Anomalocarids. Happy hump day everyone. https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0052200 https://www.nationalgeographic.com/science/article/cambrian--worms-were-voracious-opportunists cheers Marcus
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- priapulida
- sipuncula
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My mother accumulated some fossils during her teaching career in Louisiana. At one point...probably 50 years ago....they were sent to LSU to be identified. Over the years, some of the labels have been lost and I've recently gotten the identification of most. But this one is still "up for grabs"...the original label said "annelid?" Any help would be appreciated....I'd like to get them appropriately displayed....for some reason someone thought it was a good idea to glue them onto styrofoam.
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From the album: C&D Canal Micro Fossils
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From the album: C&D Canal Micro Fossils
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From the album: C&D Canal Micro Fossils
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References: YANISHEVSKY, M (1926). "On the remains of the tubular worms from the Cambrian blue clays". Ezhegodnik Russkogo Paleontologicheskogo Obchestva. 4: 99–112. Korkutis, V. A. 1966. Tubicolous Worms of the Lower Cambrian of the South of the East Baltic territory. Palaeontology and stratigraphy of the Baltic and the Byelorussia. Number I (VI), pp. 7-29. Małgorzata Moczydłowska, Frances Westall, Frédéric Foucher (2014). Microstructure and Biogeochemistry of the Organically Preserved Ediacaran Metazoan Sabellidites. J. of Paleontology, 88(2):224-239 (2014).
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I found these on a beach in Illinois in a small lens of pyritic sand. I believe they are worm tubes but not entirely sure. They are only visible under microscope and occur with pyrite framboids. So my question is, are they indeed worm tubes, pellets, or something else? I can only assume they occur at the beach because of erosion of Silurian rocks placed there, but not sure of that either. In this pic below, you can see partially inside the tube which features spheres of pyrite. It's my understanding can be produced by worms. framboid Thanks for any help!
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Ok- so I was 13 when I found this one in south St. Louis county, and I thought it was an annelid, then an insect (thought there was a leg -there was no difference between 12 and 13 ? ). This is very similar to the last post i just had, thanks again! Bone
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Can someone help me identify this. Found along the north shore of Lake Erie, Ontario, Canada in a Chert bed 8 cm's thick on top of Limestone. EDIT to add measurements: 3 cm x 4 mm Thank you! Dave
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McLoughlin, S., Bomfleur, B. and Thomas, M., 2016. The weird world of fossil worm cocoons. Deposits Magazine, 46, pp.399-406. https://www.researchgate.net/publication/304285376_The_weird_world_of_fossil_worm_cocoons/link/5b83a324a6fdcc5f8b6a4506/download https://www.researchgate.net/profile/Stephen_Mcloughlin http://www.diva-portal.org/smash/get/diva2:1047133/FULLTEXT02 McLoughlin, S., Bomfleur, B., Mörs, T. and Reguero, M., 2016. Fossil clitellate annelid cocoons and their microbiological inclusions from the Eocene of Seymour Island, Antarctica. Palaeontologia Electronica, 19(1), pp.1-27. https://palaeo-electronica.org/content/in-press/1448-eocene-annelid-cocoons https://palaeo-electronica.org/content/pdfs/607.pdf Yours, Paul H.
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References: Weller, St. (1925): A new type of Silurian worm. The Journal of Geology, Vol. 33, 5, pp 540-544 Roy et. al. (1932): A Silurian worm and associated fauna. Fieldiana, Geology, Vol.4, No.7
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