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Zinsitys
Taxonomy
Zinsitys was named by Saul (1988) [Sepkoski's age data: K u Sepkoski's reference number: ZR90]. Its type is Zinsitys meisteri.
It was assigned to Perissityidae by Saul (1988); and to Neogastropoda by Sepkoski (2002).
It was assigned to Perissityidae by Saul (1988); and to Neogastropoda by Sepkoski (2002).
Species
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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. †Zinsitys Saul 1988
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†Zinsitys anassa Saul 1988
†Zinsitys edwilsoni Saul 1988
†Zinsitys kingii Gabb 1864
†Zinsitys meisteri Saul 1988
Diagnosis
Reference | Diagnosis | |
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L. R. Saul 1988 | Elongate bucciniform to spindleform Perissityidae that have a biangulate whorl profile and are slightly flattened in the aperture-to-back dimension. The angulations arc noded and the whole shell is spirally ribbed. The growth line is shallowly notched on the posterior angulation. The aperture is eye-shaped and has a well-developed posterior sinus and an anterior sinus of moderate depth. The flared outer lip is slightly thickened and has a bifid dentic le well within the aperture between the biangulations. The inner lip is clearly demarkcd. of moderate width, and has a parietal ridge bordering the posterior sinus. |