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Callognathus
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 Ichthyodorulites by Hay (1902); and to Arthrodira by Denison (1978) and Sepkoski (2002).
It was assigned to Ichthyodorulites by Hay (1902); and to Arthrodira by Denison (1978) and Sepkoski (2002).
Species
Synonymy list
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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.
G. †Callognathus Newberry 1890
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†Callognathus regularis Newberry 1889
†Callognathus serratus Newberry 1889
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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Source: o = order, subp = subphylum | |||||
Reference: Carroll 1988 |
Collections
No collection or age range data are available