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Bassleroceratidae ✝
| Description | The Bassleroceratidae is a family of gradually expanding, smooth ellesmerocerids with a slight to moderate exogastric curvature, subcircular to strongly compressed cross section, and ventral orthochaonitc siphuncle. The ventral side is typically more sharply rounded than the dorsal side and septa are close spaced. Connecting rings are thick and slightly expanded into the siphuncle, making the segments slightly concave; characteristic of the Ellesmerocerida. From Wikipedia article at https://en.wikipedia.org/wiki/Bassleroceratidae, which is released under the Creative Commons Attribution-Share-Alike License 3.0. | |||||||||||||||||||||||||||||||||||||||
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| Source Data |
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| Rank | family | |||||||||||||||||||||||||||||||||||||||
| Taxonomy (GBIF) | Life : Animalia : Mollusca : Cephalopoda : Bassleroceratidae | |||||||||||||||||||||||||||||||||||||||
| Taxonomy (PBDB) | Life : Animalia : Mollusca : Cephalopoda : Ellesmerocerida : Bassleroceratidae | |||||||||||||||||||||||||||||||||||||||
| Taxonomic Status (GBIF) | accepted | |||||||||||||||||||||||||||||||||||||||
| Classification (PBDB,GBIF) |
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| Scientific Name | Bassleroceratidae | |||||||||||||||||||||||||||||||||||||||
| Opinions (PBDB) |
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| Status (PBDB) | extinct | |||||||||||||||||||||||||||||||||||||||
| Taxon Size (PBDB) | 32 | |||||||||||||||||||||||||||||||||||||||
| First Recorded Appearance | 485 - 479 Ma Paleozoic | |||||||||||||||||||||||||||||||||||||||
| Last Recorded Appearance | 478 - 466 Ma Ordovician | |||||||||||||||||||||||||||||||||||||||
| Environment | marine (based on Ellesmerocerida) | |||||||||||||||||||||||||||||||||||||||
| Motility | actively mobile (based on Ellesmerocerida) | |||||||||||||||||||||||||||||||||||||||
| Vision | well-developed (based on Cephalopoda) | |||||||||||||||||||||||||||||||||||||||
| Diet | carnivore (based on Cephalopoda) | |||||||||||||||||||||||||||||||||||||||
| Taphonomy | aragonite (based on Ellesmerocerida) | |||||||||||||||||||||||||||||||||||||||
| Primary Reference (PBDB) | E. O. Ulrich, A. F. Foerste, and A. K. Miller, W. M. Furnish. 1944. Ozarkian and Canadian cephalopods, longicones and summary. Geological Society of America Special Paper 58:1-226 | |||||||||||||||||||||||||||||||||||||||
| Wikipedia | https://en.wikipedia.org/wiki/Bassleroceratidae |
External Images
Fossil Distribution
Subtaxa
| Name | Status | Common Name(s) | Fossil Occurrences | Oldest | Youngest |
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| Anguloceras ✝ genus | accepted (GBIF) listed (PBDB) | 4 | 485 Ma Cambrian | 485 Ma Cambrian | |
| Avaoceras ✝ genus | accepted (GBIF) listed (PBDB) | 5 | 485 Ma Cambrian | 478 Ma Early/Lower Ordovician | |
| Avoceras ✝ genus | doubtful (GBIF) listed (PBDB) | ||||
| Bassleroceras ✝ genus | accepted (GBIF) listed (PBDB) | 30 | 485 Ma Cambrian | 479 Ma Early/Lower Ordovician | |
| Diaphoroceras ✝ genus | accepted (GBIF) listed (PBDB) | 5 | 485 Ma Cambrian | 479 Ma Early/Lower Ordovician | |
| Dwightoceras ✝ genus | accepted (GBIF) listed (PBDB) | 2 | 485 Ma Cambrian | 485 Ma Cambrian | |
| Dyscritoceras ✝ genus | accepted (GBIF) listed (PBDB) | 6 | 485 Ma Cambrian | 478 Ma Early/Lower Ordovician | |
| Lawrenceoceras ✝ genus | accepted (GBIF) listed (PBDB) | 7 | 479 Ma Early/Lower Ordovician | 479 Ma Early/Lower Ordovician | |
| Leptocyrtoceras ✝ genus | accepted (GBIF) listed (PBDB) | 6 | 485 Ma Cambrian | 478 Ma Early/Lower Ordovician | |
| Monogonoceras ✝ genus | accepted (GBIF) listed (PBDB) | 6 | 485 Ma Cambrian | 485 Ma Cambrian | |
| Onychoceras ✝ genus | doubtful (GBIF) listed (PBDB) | 3 | 479 Ma Early/Lower Ordovician | 479 Ma Early/Lower Ordovician | |
| Stylocyrtoceras ✝ genus | accepted (GBIF) listed (PBDB) | 1 | 479 Ma Early/Lower Ordovician | 479 Ma Early/Lower Ordovician |
Synonymy List
| Year | Name and Author |
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| 1944 | Bassleroceratidae Ulrich et al. |
| 2008 | Bassleroceratidae Kröger and Landing p. 146 |
| 2009 | Bassleroceratidae Kröger and Landing p. 490 |
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!
