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Cremnorthidae
Taxonomy
Cremnorthidae was named by Williams (1963).
It was assigned to Orthida by Mitchell (1977); to Orthacea by Potter (1990); and to Plectorthoidea by Williams et al. (2000).
It was assigned to Orthida by Mitchell (1977); to Orthacea by Potter (1990); and to Plectorthoidea by Williams et al. (2000).
Subtaxa
Synonymy list
Year | Name and author |
---|---|
1963 | Cremnorthidae Williams |
1977 | Cremnorthidae Mitchell |
1990 | Cremnorthidae Potter |
2000 | Cremnorthidae Williams et al. p. 762 |
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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.
Fm. †Cremnorthidae Williams 1963
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G. †Brandysia
G. †Septorthis
Invalid names: Cremnorthinae Williams 1963 [empty]
Diagnosis
No diagnoses are available