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Rhynchorthoceras ✝
| Description | Rhynchorthoceras is a Middle Ordovician genus characterized by a rapidly expanded, weakly annulate orthocone, like the orthoconic section of Ancistroceras, but with only a curved, cyrtoconic apex instead of juvenile whorls. From Wikipedia article at https://en.wikipedia.org/wiki/Rhynchorthoceras, 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 : Sinoceratidae : Rhynchorthoceras | ||||||||||||||||||||||||||||||||||||||||||||||||
| Taxonomy (PBDB) | Life : Animalia : Mollusca : Cephalopoda : Orthocerida : Sinoceratidae : Rhynchorthoceras | ||||||||||||||||||||||||||||||||||||||||||||||||
| Taxonomic Status (GBIF) | accepted | ||||||||||||||||||||||||||||||||||||||||||||||||
| Classification (PBDB,GBIF) |
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| Scientific Name | Rhynchorthoceras Remelé, 1881 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Name Published In | Z. Dtsch. Geol. Ges., 33, 480 (also as Rhynchoceras). | ||||||||||||||||||||||||||||||||||||||||||||||||
| Opinions (PBDB) |
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| Status (PBDB) | extinct | ||||||||||||||||||||||||||||||||||||||||||||||||
| Taxon Size (PBDB) | 7 | ||||||||||||||||||||||||||||||||||||||||||||||||
| First Recorded Appearance | 468 - 464 Ma Middle Ordovician | ||||||||||||||||||||||||||||||||||||||||||||||||
| Last Recorded Appearance | 458 - 450 Ma Late/Upper Ordovician | ||||||||||||||||||||||||||||||||||||||||||||||||
| Environment | marine (based on Orthocerida) | ||||||||||||||||||||||||||||||||||||||||||||||||
| Motility | actively mobile (based on Orthocerida) | ||||||||||||||||||||||||||||||||||||||||||||||||
| Vision | well-developed (based on Cephalopoda) | ||||||||||||||||||||||||||||||||||||||||||||||||
| Diet | carnivore (based on Lituitina) | ||||||||||||||||||||||||||||||||||||||||||||||||
| Taphonomy | aragonite (based on Lituitina) | ||||||||||||||||||||||||||||||||||||||||||||||||
| Primary Reference (PBDB) | J. J. Sepkoski, Jr. 2002. A compendium of fossil marine animal genera. Bulletins of American Paleontology 363:1-560 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Wikipedia | https://en.wikipedia.org/wiki/Rhynchorthoceras |
Fossil Distribution
Subtaxa
| Name | Status | Common Name(s) | Fossil Occurrences | Oldest | Youngest |
|---|---|---|---|---|---|
| Ancistroceras densum species | accepted (GBIF) | No associated record in PBDB | |||
| Ancistroceras subcurvatum species | accepted (GBIF) | No associated record in PBDB | |||
| Rhynchorthoceras angelini ✝ species | accepted (GBIF) listed (PBDB) | 1 | 466 Ma Middle Ordovician | 466 Ma Middle Ordovician | |
| Rhynchorthoceras beyrichi ✝ species | accepted (GBIF) listed (PBDB) | ||||
| Rhynchorthoceras densum ✝ species | listed (PBDB) | ||||
| Rhynchorthoceras helgoeyense ✝ species | accepted (GBIF) listed (PBDB) | 3 | 464 Ma Middle Ordovician | 461 Ma Middle Ordovician | |
| Rhynchorthoceras minor ✝ species | accepted (GBIF) listed (PBDB) | 1 | 467 Ma Middle Ordovician | 467 Ma Middle Ordovician | |
| Rhynchorthoceras subcurvatum ✝ species | listed (PBDB) | ||||
Synonymy List
| Year | Name and Author |
|---|---|
| 1882 | Rhynchorthoceras Remelé |
| 1958 | Rhynchorthoceras Sweet |
| 1964 | Rhynchorthoceras Teichert et al. p. 366 |
| 2005 | Rhynchorthoceras Evans |
| 2007 | Rhynchorthoceras Kröger et al. |
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!
