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Perissitys brevirostris
Taxonomy
Perissolax brevirostris was named by Gabb (1864). Its type specimen is ANSP 4188 and is a 3D body fossil. It is the type species of Perissitys.
It was recombined as Perissitys brevirostris by Stewart (1927) and Popenoe and Saul (1987).
It was recombined as Perissitys brevirostris by Stewart (1927) and Popenoe and Saul (1987).
Synonymy list
Year | Name and author |
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1864 | Perissolax brevirostris Gabb p. 91 figs. pl. 18, fig. 43 |
1917 | Perissolax brevirostris Waring p. 67 |
1927 | Perissitys brevirostris Stewart pp. 426 - 427 figs. Pla.te XX, fig. 4 |
1987 | Perissitys brevirostris Popenoe and Saul pp. 16 - 17 figs. Figures 10, 11, 42 - 61 |
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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.
†Perissitys brevirostris Gabb 1864
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Diagnosis
Reference | Diagnosis | |
---|---|---|
W. P. Popenoe and L. R. Saul 1987 | Pyriform Perissitys with three strong spiral ribs about the periphery, a noded subsutural welt, inner lip expanded to cover all of the apertural face of the shell, and no apertural ornaments. |