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Perissitys pacifica
Taxonomy
Perissitys pacifica was named by Popenoe and Saul (1987). Its type specimen is UCLA 59691, a shell, and it is a 3D body fossil. Its type locality is CIT loc. 1159, Dayton Canyon, which is in a Campanian marine siliciclastic in the Chatsworth Formation of California.
Synonymy list
| Year | Name and author |
|---|---|
| 1987 | Perissitys pacifica Popenoe and Saul pp. 17 - 19 figs. Figures 62 - 69 |
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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 pacifica Popenoe and Saul 1987
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| W. P. Popenoe and L. R. Saul 1987 | Pyriform Perissitys which have two strong and one weak spiral ribs about the periphery, a waved sub- sutural welt, the inner lip expanded to cover about half 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: Late/Upper Campanian or 83.60000 to 72.20000 Ma
Collections (9 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Campanian | USA (California) | Perissitys brevirostris (72057) Perissitys pacifica (72058 72059 86794 86872 98225 type locality: 185168) | |
| Middle Campanian | USA (California) | Perissitys pacifica (144763 144764) |