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Aphetoceras ✝
Description | Aphetoceras is a genus of Tarphycerida cephalopod within the Estonioceratidae; loosely coiled without an impression along the dorsal margin; early whorls barely teaching, separating then diverging in the final mature whorl; weakly ribbed in some. The cross section of Aphetoceras is higher than wide, making it compressed in form. The dorsum, along the inner curve, is more broadly rounded than the venter which lies along the outer curve. The siphuncle is relatively large, located near but not at the ventral margin; lined with secondary deposits. Chambers are empty. From Wikipedia article at https://en.wikipedia.org/wiki/Aphetoceras, which is released under the Creative Commons Attribution-Share-Alike License 3.0. | ||||||||||||||||||||||||||||||||||||||||||
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Source Data |
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Rank | genus | ||||||||||||||||||||||||||||||||||||||||||
Taxonomy (GBIF) | Life : Animalia : Mollusca : Cephalopoda : Estonioceratidae : Aphetoceras | ||||||||||||||||||||||||||||||||||||||||||
Taxonomy (PBDB) | Life : Animalia : Mollusca : Cephalopoda : Tarphycerida : Estonioceratidae : Aphetoceras | ||||||||||||||||||||||||||||||||||||||||||
Taxonomic Status (GBIF) | accepted | ||||||||||||||||||||||||||||||||||||||||||
Classification (PBDB,GBIF) |
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Scientific Name | Aphetoceras Hyatt, 1894 | ||||||||||||||||||||||||||||||||||||||||||
Name Published In | Proc. Amer. Phil. Soc., 32 | ||||||||||||||||||||||||||||||||||||||||||
Opinions (PBDB) |
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Status (PBDB) | extinct | ||||||||||||||||||||||||||||||||||||||||||
Taxon Size (PBDB) | 9 | ||||||||||||||||||||||||||||||||||||||||||
First Recorded Appearance | 485 - 479 Ma Paleozoic | ||||||||||||||||||||||||||||||||||||||||||
Last Recorded Appearance | 467 - 458 Ma Middle Ordovician | ||||||||||||||||||||||||||||||||||||||||||
Motility | fast-moving (based on Cephalopoda) | ||||||||||||||||||||||||||||||||||||||||||
Vision | well-developed (based on Cephalopoda) | ||||||||||||||||||||||||||||||||||||||||||
Diet | carnivore (based on Cephalopoda) | ||||||||||||||||||||||||||||||||||||||||||
Taphonomy | aragonite (based on Tarphycerida) | ||||||||||||||||||||||||||||||||||||||||||
Primary Reference (PBDB) | A. Hyatt. 1894. Phylogeny of an acquired characteristic. Proceedings of the American Philosophical Society 32(143):349-647 | ||||||||||||||||||||||||||||||||||||||||||
Wikipedia | https://en.wikipedia.org/wiki/Aphetoceras |
Fossil Distribution
Subtaxa
Name | Status | Common Name(s) | Fossil Occurrences | Oldest | Youngest |
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Aphetoceras americanum ✝ species | accepted (GBIF) listed (PBDB) | 1 | 478 Ma Early/Lower Ordovician | 478 Ma Early/Lower Ordovician | |
Aphetoceras attenuatum ✝ species | accepted (GBIF) listed (PBDB) | 2 | 485 Ma Cambrian | 478 Ma Early/Lower Ordovician | |
Aphetoceras boreale ✝ species | accepted (GBIF) listed (PBDB) | 1 | 485 Ma Cambrian | 485 Ma Cambrian | |
Aphetoceras evolutum ✝ species | accepted (GBIF) listed (PBDB) | ||||
Aphetoceras farnsworthi ✝ species | listed (PBDB) | 2 | 485 Ma Cambrian | 478 Ma Early/Lower Ordovician | |
Aphetoceras oderi ✝ species | accepted (GBIF) listed (PBDB) | 1 | 478 Ma Early/Lower Ordovician | 478 Ma Early/Lower Ordovician | |
Aphetoceras ruedemanni ✝ species | accepted (GBIF) listed (PBDB) | 1 | 478 Ma Early/Lower Ordovician | 478 Ma Early/Lower Ordovician | |
Aphetoceras subcostulatum ✝ species | accepted (GBIF) listed (PBDB) | 3 | 485 Ma Cambrian | 485 Ma Cambrian | |
Lituites farnsworthi species | accepted (GBIF) | No associated record in PBDB |
Synonymy List
Year | Name and Author |
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1894 | Aphetoceras Hyatt p. 447 |
1942 | Aphetoceras Ulrich et al. |
1964 | Aphetoceras Teichert et al. p. 358 |
2008 | Aphetoceras Kröger and Landing |
2011 | Aphetoceras Evans |
References
Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!