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Janassa
| Source Data |
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| Rank | genus (PBDB) | |||||||||||||||||||||||||||||||||||||||||||||
| Taxonomy (PBDB) | Life : Animalia : Chordata : Chondrichthyes : Petalodontiformes : Janassidae : Janassa | |||||||||||||||||||||||||||||||||||||||||||||
| Classification (PBDB,GBIF) |
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| Opinions (PBDB) |
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| Status (PBDB) | extant | |||||||||||||||||||||||||||||||||||||||||||||
| Taxon Size (PBDB) | 16 | |||||||||||||||||||||||||||||||||||||||||||||
| Extant Size (PBDB) | 5 (31%) | |||||||||||||||||||||||||||||||||||||||||||||
| First Recorded Appearance | 359 - 323 Ma Paleozoic | |||||||||||||||||||||||||||||||||||||||||||||
| Environment | marine (based on Vertebrata) | |||||||||||||||||||||||||||||||||||||||||||||
| Motility | actively mobile (based on Petalodontiformes) | |||||||||||||||||||||||||||||||||||||||||||||
| Diet | carnivore (based on Petalodontiformes) | |||||||||||||||||||||||||||||||||||||||||||||
| Taphonomy | phosphatic (based on Vertebrata) | |||||||||||||||||||||||||||||||||||||||||||||
| Primary Reference (PBDB) | J. J. Sepkoski, Jr. 2002. A compendium of fossil marine animal genera. Bulletins of American Paleontology 363:1-560 | |||||||||||||||||||||||||||||||||||||||||||||
Fossil Distribution
Subtaxa
| Name | Status | Common Name(s) | Fossil Occurrences | Oldest | Youngest |
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| Janassa angularis ✝ species | listed (PBDB) | 1 | 272 Ma Permian | 272 Ma Permian | |
| Janassa bituminosa ✝ species | listed (PBDB) | 19 | 323 Ma Carboniferous | 260 Ma Permian | |
| Janassa brevis species | listed (PBDB) | 0 Ma Extant | |||
| Janassa clarki ✝ species | listed (PBDB) | 1 | 326 Ma Carboniferous | 326 Ma Carboniferous | |
| Janassa clavatus ✝ species | listed (PBDB) | 2 | 359 Ma Late/Upper Devonian | 359 Ma Late/Upper Devonian | |
| Janassa gurleiana species | listed (PBDB) | 0 Ma Extant | |||
| Janassa imbricatus ✝ species | listed (PBDB) | 1 | 359 Ma Late/Upper Devonian | 359 Ma Late/Upper Devonian | |
| Janassa kochi ✝ species | listed (PBDB) | 1 | 260 Ma Permian | 260 Ma Permian | |
| Janassa korni ✝ species | listed (PBDB) | 3 | 260 Ma Permian | 260 Ma Permian | |
| Janassa linguaeformis ✝ species | listed (PBDB) | 2 | 315 Ma Carboniferous | 315 Ma Carboniferous | |
| Janassa maxima ✝ species | listed (PBDB) | 1 | 307 Ma Carboniferous | 307 Ma Carboniferous | |
| Janassa ordiana species | listed (PBDB) | 0 Ma Extant | |||
| Janassa strigilina species | listed (PBDB) | 0 Ma Extant | |||
| Janassa unguicula ✝ species | listed (PBDB) | 4 | 307 Ma Carboniferous | 260 Ma Permian | |
| Janassa unguiformis ✝ species | listed (PBDB) | 1 | 272 Ma Permian | 272 Ma Permian |
Synonymy List
| Year | Name and Author |
|---|---|
| 1840 | Dictea Münster p. 124 |
| 1843 | Byzenos Münster p. 50 |
| 1848 | Climaxodus McCoy |
| 1889 | Janassa Woodward p. 34 |
| 1902 | Janassa Hay p. 275 |
| 1963 | Climaxodus Jordan p. 593 |
| 1963 | Dictea Jordan p. 593 |
| Year | Name and Author |
|---|---|
| 1963 | Janassa Jordan p. 593 |
| 1981 | Janassa Zangerl p. 98 |
| 1989 | Janassa Lund p. 359 |
| 2002 | Janassa Sepkoski, Jr. |
| 2004 | Janassa Goto and Okura p. 221 |
| 2010 | Janassa Ginter et al. p. 134 |
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!
