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Opsidiscus
Taxonomy
Opsidiscus was named by Westergard (1949) [Sepkoski's age data: Cm uMid-u Sepkoski's reference number: 16,80]. It is not extant.
It was assigned to Eodiscidae by Whittington et al. (1997); and to Agnostida by Sepkoski (2002).
It was assigned to Eodiscidae by Whittington et al. (1997); and to Agnostida by Sepkoski (2002).
Species
Species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1946 | Aulacodiscus Westergard |
| 1949 | Opsidiscus Westergard |
| 1997 | Opsidiscus Whittington et al. p. 402 |
| 2002 | Opsidiscus Sepkoski |
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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. †Opsidiscus Westergard 1949
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†Opsidiscus bilobatus Kobayashi 1939
†Opsidiscus haimantensis Reed 1910
Invalid names: Aulacodiscus Westergard 1946 [replaced]
Diagnosis
No diagnoses are available