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Heterosteus
Taxonomy
Heterosteus was named by Asmuss (1856) [Sepkoski's age data: D Give-u Sepkoski's reference number: 521]. It is not extant. Its type is Heterosteus asmussi.
It was assigned to Chelonichthyidae by Jordan (1963); to Heterosteidae by Denison (1978); and to Arthrodira by Woodward (1891) and Sepkoski (2002).
It was assigned to Chelonichthyidae by Jordan (1963); to Heterosteidae by Denison (1978); and to Arthrodira by Woodward (1891) 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. †Heterosteus Asmuss 1856
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†Heterosteus asmussi Agassiz 1844
†Heterosteus convexus Asmuss 1856
†Heterosteus groenlandicus Stensio 1938
†Heterosteus ingens Asmuss 1856
†Heterosteus rhenanus Gross 1933
Diagnosis
No diagnoses are available