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Stephanoceratidae ✝
| Description | Stephanoceratidae is a family of planulate and coronate ammonites within the Stephanoceratoidea. Shells are evolute so that all whorls are exposed and have strong ribbing that bifurcates, that is splits in two, on the flanks. Many have tubercles at the point of bifurcation. Whorl sections are generally subequant; the outer rim, or venter, commonly rounded. From Wikipedia article at https://en.wikipedia.org/wiki/Stephanoceratidae, 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 : Ammonoidea : Stephanoceratidae | ||||||||||||||||||||||||||||||||||||||||||||||||
| Taxonomy (PBDB) | Life : Animalia : Mollusca : Cephalopoda : Ammonitida : Stephanoceratidae | ||||||||||||||||||||||||||||||||||||||||||||||||
| Taxonomic Status (GBIF) | accepted | ||||||||||||||||||||||||||||||||||||||||||||||||
| Classification (PBDB,GBIF) |
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| Scientific Name | Stephanoceratidae | ||||||||||||||||||||||||||||||||||||||||||||||||
| Opinions (PBDB) |
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| Status (PBDB) | extinct | ||||||||||||||||||||||||||||||||||||||||||||||||
| Taxon Size (PBDB) | 177 | ||||||||||||||||||||||||||||||||||||||||||||||||
| First Recorded Appearance | 176 - 172 Ma Jurassic | ||||||||||||||||||||||||||||||||||||||||||||||||
| Last Recorded Appearance | 168 - 161 Ma Jurassic | ||||||||||||||||||||||||||||||||||||||||||||||||
| Motility | fast-moving (based on Ammonoidea) | ||||||||||||||||||||||||||||||||||||||||||||||||
| Vision | well-developed (based on Cephalopoda) | ||||||||||||||||||||||||||||||||||||||||||||||||
| Diet | carnivore (based on Ammonoidea) | ||||||||||||||||||||||||||||||||||||||||||||||||
| Taphonomy | aragonite (based on Ammonoidea) | ||||||||||||||||||||||||||||||||||||||||||||||||
| Primary Reference (PBDB) | J. Sandoval and E. G. Westermann. 1986. The Bajocian (Jurassic) ammonite fauna of Oaxaca, Mexico. Journal of Paleontology 60(6):1220-1271 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Wikipedia | https://en.wikipedia.org/wiki/Stephanoceratidae |
Fossil Distribution
Subtaxa
| Name | Status | Common Name(s) | Fossil Occurrences | Oldest | Youngest |
|---|---|---|---|---|---|
| Cadomitinae ✝ subfamily | listed (PBDB) | ||||
| Frebolditinae ✝ subfamily | listed (PBDB) | 12 | 172 Ma Middle Jurassic | 170 Ma Middle Jurassic | |
| Garantianinae ✝ subfamily | listed (PBDB) | 57 | 172 Ma Middle Jurassic | 168 Ma Middle Jurassic | |
| Mollistephaninae ✝ subfamily | listed (PBDB) | 10 | 172 Ma Middle Jurassic | 170 Ma Middle Jurassic | |
| Parkinsoniinae ✝ subfamily | listed (PBDB) | 169 | 174 Ma Middle Jurassic | 168 Ma Middle Jurassic | |
| Stephanoceratinae ✝ subfamily | listed (PBDB) | 64 | 172 Ma Middle Jurassic | 170 Ma Middle Jurassic | |
| Albarracinites genus | accepted (GBIF) | No associated record in PBDB | |||
| Bajocia ✝ genus | accepted (GBIF) listed (PBDB) | 1 | 170 Ma Middle Jurassic | 170 Ma Middle Jurassic | |
| Cadomites ✝ genus | accepted (GBIF) listed (PBDB) | 41 | 172 Ma Middle Jurassic | 168 Ma Middle Jurassic | |
| Duashnoceras ✝ genus | accepted (GBIF) listed (PBDB) | 14 | 170 Ma Middle Jurassic | 170 Ma Middle Jurassic | |
| Emileia ✝ genus | accepted (GBIF) listed (PBDB) | 6 | 172 Ma Middle Jurassic | 170 Ma Middle Jurassic | |
| Ermoceras ✝ genus | accepted (GBIF) listed (PBDB) | 31 | 172 Ma Middle Jurassic | 168 Ma Middle Jurassic | |
| Keppleritiana ✝ genus | accepted (GBIF) listed (PBDB) | 2 | 172 Ma Middle Jurassic | 172 Ma Middle Jurassic | |
| Kosmermoceras ✝ genus | accepted (GBIF) listed (PBDB) | 33 | 172 Ma Middle Jurassic | 170 Ma Middle Jurassic | |
| Kumatostephanus ✝ genus | accepted (GBIF) listed (PBDB) | 1 | 170 Ma Middle Jurassic | 170 Ma Middle Jurassic | |
| Odontolkites genus | accepted (GBIF) | No associated record in PBDB | |||
| Parabigotites ✝ genus | accepted (GBIF) listed (PBDB) | ||||
| Paramollistephanus ✝ genus | accepted (GBIF) listed (PBDB) | ||||
| Parastrenoceras ✝ genus | accepted (GBIF) listed (PBDB) | 6 | 172 Ma Middle Jurassic | 170 Ma Middle Jurassic | |
| Phaulostephanus ✝ genus | accepted (GBIF) listed (PBDB) | 4 | 172 Ma Middle Jurassic | 170 Ma Middle Jurassic | |
| Riccardiceras ✝ genus | doubtful (GBIF) listed (PBDB) | 8 | 176 Ma Early Jurassic | 172 Ma Middle Jurassic | |
| Skolekostephanus ✝ genus | doubtful (GBIF) listed (PBDB) | ||||
| Stemmatoceras ✝ genus | accepted (GBIF) listed (PBDB) | 25 | 172 Ma Middle Jurassic | 170 Ma Middle Jurassic | |
| Stephanoceras ✝ genus | accepted (GBIF) listed (PBDB) | 22 | 172 Ma Middle Jurassic | 170 Ma Middle Jurassic | |
| Subcollina ✝ genus | accepted (GBIF) listed (PBDB) | 3 | 172 Ma Middle Jurassic | 170 Ma Middle Jurassic | |
| Telermoceras ✝ genus | accepted (GBIF) listed (PBDB) | 29 | 172 Ma Middle Jurassic | 170 Ma Middle Jurassic | |
| Teloceras ✝ genus | accepted (GBIF) listed (PBDB) | 11 | 172 Ma Middle Jurassic | 170 Ma Middle Jurassic | |
| Westermannites ✝ genus | doubtful (GBIF) listed (PBDB) | 1 | 174 Ma Middle Jurassic | 174 Ma Middle Jurassic | |
| Pseudoteloceras croisillense species | accepted (GBIF) | No associated record in PBDB | |||
Synonymy List
| Year | Name and Author |
|---|---|
| 1875 | Stephanoceratidae Neumayr |
| 1952 | Stephanoceratidae Arkell p. 270 |
| 1957 | Stephanoceratidae Arkell et al. p. 289 |
| 1986 | Stephanoceratidae Sandoval and Westermann p. 1234 |
| 2015 | Stephanoceratidae Fernandez-Lopez and Pavia p. 711 |
| 2015 | Stephanoceratidae Majidifard p. 30 |
| 2017 | Stephanoceratidae Mitta p. 252 |
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!
Saint-Benin-d'Azy, Nevers, Nièvre, Bourgogne-Franche-Comté, France