Janusiscus
| Janusiscus Temporal range:
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Scientific classification 
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| Kingdom: | Animalia |
| Phylum: | Chordata |
| Infraphylum: | Gnathostomata |
| Genus: | †Janusiscus Giles et al., 2015 |
| Species: | †J. schultzei
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| Binomial name | |
| †Janusiscus schultzei Giles et al., 2015
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Janusiscus schultzei is an extinct gnathostome vertebrate dating from the Early Devonian period in Siberia, approximately 415 million years ago. It may be a common ancestor of either Chondrichthyes (cartilaginous fish) or Osteichthyes (bony fish) or both or a sibling of their ancestor. If it is an ancestor to both types of fish, then J. schultzei would also be a common ancestor to all living jawed vertebrates. The species name is in honor of Hans-Peter Schultze; the genus named after Janus, the Roman god of duality.[1]
Taxonomy[]
The following cladogram is simplified from Giles et al., 2015:[1]
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References[]
- ^ a b
Giles, Sam; Friedman, Matt; Brazeau, Martin D. (2015-01-12). "Osteichthyan-like cranial conditions in an Early Devonian stem gnathostome". Nature. 520 (7545): 82–85. doi:10.1038/nature14065. ISSN 1476-4687. PMC 5536226. PMID 25581798.
External links[]
- Ancient fossil may rewrite fish family tree Viviane Callier. Jan. 12, 2015, 1:45 PM
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Categories:
- Prehistoric fish genera
- Fossil taxa described in 2015
- Fossils of Russia
- Early Devonian animals
- Vertebrate enigmatic taxa
- Devonian animal stubs