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Perissitys

Gastropoda - Neogastropoda - Turbinellidae

Taxonomy
Perissitys is a genus. It is not extant. 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).

Synonyms
Synonymy list
YearName and author
1927Cophocara Stewart pp. 428, 429
1983Cophocara Zinsmeister p. 1298
1987Perissitys Popenoe and Saul
1990Perissitys Beu et al. p. 84
2002Cophocara Sepkoski, Jr.
2002Perissitys Sepkoski, Jr.

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
Schizocoela
phylumMollusca
classGastropodaCuvier 1797
RankNameAuthor
subclassProsobranchiaMilne-Edwards 1848
superorderCaenogastropodaCox 1959
orderNeogastropodaThiele 1929
superfamilyMuricoideade Costa 1776
familyTurbinellidaeSwainson 1840
subfamilyVasinaeAdams and A 1853
genusPerissitys

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.

Diagnosis
ReferenceDiagnosis
W. P. Popenoe and L. R. Saul 1987Bucciniform 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.