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Xenacanthiformes ✝
| Source Data |
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| Rank | order (PBDB) | ||||||||||||||||||||||||||||||||||||||||||
| Taxonomy (PBDB) | Life : Animalia : Chordata : Chondrichthyes : Xenacanthiformes | ||||||||||||||||||||||||||||||||||||||||||
| Classification (PBDB,GBIF) |
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| Opinions (PBDB) |
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| Status (PBDB) | extinct | ||||||||||||||||||||||||||||||||||||||||||
| Taxon Size (PBDB) | 63 | ||||||||||||||||||||||||||||||||||||||||||
| First Recorded Appearance | 408 - 393 Ma Early/Lower Devonian | ||||||||||||||||||||||||||||||||||||||||||
| Last Recorded Appearance | 101 - 66 Ma Late/Upper Cretaceous | ||||||||||||||||||||||||||||||||||||||||||
| Environment | marine (based on Vertebrata) | ||||||||||||||||||||||||||||||||||||||||||
| Motility | actively mobile (based on Xenacanthiformes) | ||||||||||||||||||||||||||||||||||||||||||
| Diet | carnivore (based on Xenacanthiformes) | ||||||||||||||||||||||||||||||||||||||||||
| Taphonomy | phosphatic (based on Vertebrata) | ||||||||||||||||||||||||||||||||||||||||||
| Primary Reference (PBDB) | A. B. Heckert. 2004. Late Triassic microvertebrates from the lower Chinle Group (Otischalkian-Adamanian: Carnian), southwestern U.S.A. New Mexico Museum of Natural History and Science Bulletin 27:1-170 | ||||||||||||||||||||||||||||||||||||||||||
Fossil Distribution
Subtaxa
| Name | Status | Common Name(s) | Fossil Occurrences | Oldest | Youngest |
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| Diplodoselachidae ✝ family | accepted (GBIF) listed (PBDB) | 34 | 408 Ma Early/Lower Devonian | 101 Ma Late/Upper Cretaceous | |
| Xenacanthidae ✝ family | listed (PBDB) | 81 | 323 Ma Carboniferous | 222 Ma Late/Upper Triassic | |
| Xenosynechodontidae ✝ family | listed (PBDB) | 9 | 269 Ma Permian | 268 Ma Permian |
Synonymy List
| Year | Name and Author |
|---|---|
| 1955 | Xenacanthiformes Berg |
| 1987 | Xenacanthiformes Cappetta p. 27 |
| 1989 | Xenacanthiformes Murry p. 250 |
| 2004 | Xenacanthiformes Heckert p. 72 |
| 2010 | Xenacanthiformes Ginter et al. p. 43 |
| 2011 | Xenacanthiformes Long p. 242 |
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!
