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Cratis
Taxonomy
Cratis was named by Hedley (1915) [Sepkoski's age data: T Mi-l-l R Sepkoski's reference number: 681]. It is extant.
It was assigned to Arcoida by Sepkoski (2002); and to Philobryidae by Vokes (1980), Lamprell and Healy (1998) and Spencer et al. (2004).
It was assigned to Arcoida by Sepkoski (2002); and to Philobryidae by Vokes (1980), Lamprell and Healy (1998) and Spencer et al. (2004).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1915 | Cratis Hedley |
| 1980 | Cratis Vokes p. 22 |
| 1998 | Cratis Lamprell and Healy p. 76 |
| 2002 | Cratis Sepkoski |
| 2004 | Cratis Spencer et al. |
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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. Cratis Hedley 1915
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Cratis delicatula Powell 1937
Cratis kanekoi Hayami and Kase 1993
†Cratis ovata Marwick 1931
Cratis progressa Hedley 1915
Cratis retiaria Powell 1937
Diagnosis
No diagnoses are available