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Karoceratidae ✝
| Description | Karoceratidae is a family of nautiloids within the order Oncocerida, characterized by straight or curved, laterally narrow, shells and slender, ventral siphuncles that are empty except in Karoceras. Siphuncle segments are inflated ventrally but straight dorsally. Septal necks are cyrtochoanitic, outwardly curved; connecting rings are thin. From Wikipedia article at https://en.wikipedia.org/wiki/Karoceratidae, 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 : Karoceratidae | |||||||||||||||||||||||||||||||||||||||
| Taxonomy (PBDB) | Life : Animalia : Mollusca : Cephalopoda : Oncocerida : Karoceratidae | |||||||||||||||||||||||||||||||||||||||
| Taxonomic Status (GBIF) | accepted | |||||||||||||||||||||||||||||||||||||||
| Classification (PBDB,GBIF) |
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| Scientific Name | Karoceratidae | |||||||||||||||||||||||||||||||||||||||
| Opinions (PBDB) |
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| Status (PBDB) | extinct | |||||||||||||||||||||||||||||||||||||||
| Taxon Size (PBDB) | 8 | |||||||||||||||||||||||||||||||||||||||
| First Recorded Appearance | 423 - 419 Ma Paleozoic | |||||||||||||||||||||||||||||||||||||||
| Last Recorded Appearance | 411 - 408 Ma Early/Lower Devonian | |||||||||||||||||||||||||||||||||||||||
| Motility | fast-moving (based on Cephalopoda) | |||||||||||||||||||||||||||||||||||||||
| Vision | well-developed (based on Cephalopoda) | |||||||||||||||||||||||||||||||||||||||
| Diet | carnivore (based on Oncocerida) | |||||||||||||||||||||||||||||||||||||||
| Taphonomy | aragonite (based on Oncocerida) | |||||||||||||||||||||||||||||||||||||||
| Primary Reference (PBDB) | C. Teichert, B. Kummel, and WC Sweet, HB Stenzel, WM Furnish, BF Glenister, HK Erben, RC Moore, DE Nodine Zeller. 1964. Cephalopoda - general features - Endoceratoidea - Actinoceratoidea - Nautiloidea - Bactritoidea. Treatise on Invertebrate Paleontology K(3):1-519 | |||||||||||||||||||||||||||||||||||||||
| Wikipedia | https://en.wikipedia.org/wiki/Karoceratidae |
Fossil Distribution
Subtaxa
| Name | Status | Common Name(s) | Fossil Occurrences | Oldest | Youngest |
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| Ankyloceras ✝ genus | accepted (GBIF) listed (PBDB) | 2 | 423 Ma Silurian | 419 Ma Early/Lower Devonian | |
| Karoceras ✝ genus | doubtful (GBIF) listed (PBDB) | ||||
| Osbornoceras ✝ genus | accepted (GBIF) listed (PBDB) | ||||
| Shuranoceras ✝ genus | doubtful (GBIF) listed (PBDB) | ||||
| Ventrobalashovia ✝ genus | accepted (GBIF) listed (PBDB) | 1 | 411 Ma Early/Lower Devonian | 411 Ma Early/Lower Devonian |
Synonymy List
| Year | Name and Author |
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| 1939 | Karoceratidae Teichert |
| 1964 | Karoceratidae Teichert et al. p. 312 |
| 2008 | Karoceratidae Kröger |
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!
