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Pseudoperissolax blakei
Taxonomy
Busycon blakei was named by Conrad (1855).
It was recombined as Perissolax blakei by Gabb (1864), Gabb (1869), Stanton (1896) and Waring (1917); it was recombined as Pseudoperissolax blakei by Clark (1918), Stewart (1927), Hanna (1927), Nagao (1928), Turner (1938), Squires (1984), Squires (1987) and Squires (2015).
It was recombined as Perissolax blakei by Gabb (1864), Gabb (1869), Stanton (1896) and Waring (1917); it was recombined as Pseudoperissolax blakei by Clark (1918), Stewart (1927), Hanna (1927), Nagao (1928), Turner (1938), Squires (1984), Squires (1987) and Squires (2015).
Subspecies
Synonymy list
| Year | Name and author |
|---|---|
| 1855 | Busycon blakei Conrad p. 11 figs. Pl. 1, fig. 13 |
| 1864 | Perissolax blakei Gabb p. 92 figs. PI. 21, Fig. 110 |
| 1869 | Perissolax blakei Gabb p. 149 |
| 1896 | Perissolax blakei Stanton p. 1045 figs. Pl. LXVII, fig. 1 |
| 1917 | Perissolax blakei Waring p. 85 figs. Pl. 13, Fig. 9 |
| 1918 | Pseudoperissolax blakei Clark p. 180 |
| 1927 | Pseudoperissolax blakei Hanna p. 316 |
| 1927 | Pseudoperissolax blakei Stewart pp. 429 - 430 figs. Plate XXVIII, fig. 1 |
| 1928 | Pseudoperissolax blakei Nagao p. 114 |
| 1938 | Pseudoperissolax blakei Turner p. 91 |
| 1984 | Pseudoperissolax blakei Squires p. 34 |
| 1987 | Pseudoperissolax blakei Squires p. 45 |
| 2015 | Pseudoperissolax blakei Squires pp. 581 - 585 figs. Figures 3.12–3.16, 4.1–4.17 |
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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.
†Pseudoperissolax blakei Conrad 1855
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†Pseudoperissolax blakei praeblakei Vokes 1939
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. L. Squires 2015 | Shell size medium; last whorl with two carinae bearing numerous swollen or lenticular nodes that can be spinose to slightly projected; varix can be present on outer lip, and cluster of varices can be present near outer lip; varix rarely on penultimate whorl; varices somewhat aligned but not continuous; columella rarely with rare pseudofold extending only short distance into aperture. |
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Hendy et al. 2009, Kiessling 2004 | |||||
Age range: base of the Thanetian to the top of the Late/Upper Eocene or 59.20000 to 33.90000 Ma
Collections (37 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Paleocene | USA (California) | Pseudoperissolax blakei (11117) | |
| Thanetian | USA (California) | Pseudoperissolax blakei (11126) | |
| Ypresian | USA (Oregon) | Pseudoperissolax blakei (200799 200802 200804) | |
| Ypresian | USA (California) | Perissolax blakei (122337) Pseudoperissolax blakei (122294) | |
| Eocene | USA (California) | Perissolax blakei (91476 207112 207113 207115 207116) | |
| Lutetian | USA (California) | Pseudoperissolax blakei (8012 94821 94827 166458 200737 200743 200744 200750 200751 200753 200754 200759 200760 200762) | |
| Lutetian | USA (Oregon) | Pseudoperissolax blakei (200895 200912) | |
| Middle Eocene | USA (California) | Pseudoperissolax blakei (191188) | |
| Bartonian | USA (California) | Perissolax blakei (122340) Pseudoperissolax blakei (52803) | |
| Bartonian | Japan | Pseudoperissolax blakei (81227 81229) | |
| Bartonian | USA (Washington) | Pseudoperissolax blakei (161924) | |
| Bartonian | USA (Oregon) | Pseudoperissolax blakei (200920 200921) | |
| Late/Upper Eocene | Japan | Pseudoperissolax blakei (81232) |