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Perissitys
Taxonomy
Perissitys was named by Stewart (1927) [Sepkoski's age data: K Turo-u T Than-l Sepkoski's reference number: 727]. Its type is Perissolax brevirostris. It is the type genus of Perissityidae.
It was assigned to Perissityidae by Popenoe and Saul (1987); to Vasinae by Beu et al. (1990); and to Neotaenioglossa by Sepkoski (2002).
It was assigned to Perissityidae by Popenoe and Saul (1987); to Vasinae by Beu et al. (1990); and to Neotaenioglossa by Sepkoski (2002).
Species
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1927 | Perissitys Stewart p. 426 figs. Pla.te XX, fig. 4 |
| 1927 | Cophocara Stewart pp. 428, 429 figs. Plate XX, figs. 1, 2, 3. |
| 1983 | Cophocara Zinsmeister p. 1298 |
| 1987 | Perissitys Popenoe and Saul p. 12 |
| 1990 | Perissitys Beu et al. p. 84 |
| 2002 | Cophocara Sepkoski |
| 2002 | Perissitys 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. †Perissitys Stewart 1927
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†Perissitys brevirostris Gabb 1864
†Perissitys colocara Popenoe and Saul 1987
†Perissitys cretacea Cooper 1896
†Perissitys elaphia Popenoe and Saul 1987
†Perissitys pacifica Popenoe and Saul 1987
†Perissitys stantoni Stewart 1927
†Perissitys stewarti Zinsmeister 1983
Invalid names: Cophocara Stewart 1927 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| W. P. Popenoe and L. R. Saul 1987 | Bucciniform to pyriform gastropods of medium to moderately large size with a subangulate whorl periphery which is ornamented by fewer than five spiral ribs. The crossing of these spiral ribs by short axial ribs produces the characteristic noded periphery. The edge of the outer lip anterior to the periphery is fimbriated. With the exception of the geologically earliest species, P. cretacea (Cooper), all species have an expanded inner lip that is developed at growth halts and is the inner lip equivalent of a varix. |