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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 |
---|---|
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. |
Measurements
No measurements are available
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Source: o = order, c = class | |||||
Reference: Kiessling 2004 |
Age range: base of the Coniacian to the top of the Early/Lower Maastrichtian or 89.80000 to 66.00000 Ma
Collections (27 total)
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Late/Upper Cretaceous | USA (California) | Perissolax brevirostris (193032) | |
Coniacian | USA (California) | Perissolax brevirostris (44232) | |
Santonian | USA (California) | Perissitys brevirostris (44275 44276 44279) | |
Campanian | Canada (British Columbia) | Perissitys brevirostris (72044) | |
Campanian | USA (Washington) | Perissitys brevirostris (86868) | |
Campanian | USA (California) | Perissitys brevirostris (69312 86937) Perissolax brevirostris (158389) | |
Early/Lower Campanian | USA (California) | Perissitys brevirostris (3888 35061 44277 86939 185172 214075 220920) | |
Middle Campanian | USA (California) | Perissitys brevirostris (72054 185156 185174 185178 219078 220911 220916 221106) | |
Middle Campanian | USA (Washington) | Perissitys brevirostris (72053) | |
Early/Lower Maastrichtian | USA (California) | Perissitys brevirostris (225632) |