Janusiscus

Janusiscus; Temporal range: 415 Ma PreЄ Є O S D C P T J K Pg N ↓
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Infraphylum:	Gnathostomata
Genus:	†Janusiscus; Farke et al., 2014
Species
	J. schultzei Giles et al., 2015 (type)

Janusiscus schultzei was a gnathostome (jawed 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. 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.[1]

References

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.

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[Giles_et_al_2015-1] 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.