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Callognathus

Arthrodira

Taxonomy
Callognathus was named by Newberry (1890) [Sepkoski's age data: D Fras D Fame Sepkoski's reference number: 521]. It is not extant.

It was assigned to Arthrodira by Sepkoski (2002).

Synonymy list
YearName and author
1890Callognathus Newberry
2002Callognathus Sepkoski, Jr.

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
RankNameAuthor
superclassGnathostomata
Osteichthyes()
subclassPlacodermi(M'Coy 1848)
orderArthrodiraWoodward 1891
genusCallognathusNewberry 1890

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Diagnosis
No diagnoses are available