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Pseudoperissolax
Taxonomy
Pseudoperissolax was named by Clark (1918) [Sepkoski's age data: T Than T Ol-u Sepkoski's reference number: 158,614].
It was reranked as Tudicla (Pseudoperissolax) by Gliozzi and Malatesta (1983).
It was assigned to Fusidae by Nagao (1928); to Cymatiidae by Turner (1938); to Muricidae by Durham (1944); to Vasidae by Oyama and Mizuno (1958); to Tudicla by Gliozzi and Malatesta (1983); to Tudiclidae by Squires (1984) and Squires (1987); to Neogastropoda by Sepkoski (2002); and to Muricinae by Squires (2015).
It was reranked as Tudicla (Pseudoperissolax) by Gliozzi and Malatesta (1983).
It was assigned to Fusidae by Nagao (1928); to Cymatiidae by Turner (1938); to Muricidae by Durham (1944); to Vasidae by Oyama and Mizuno (1958); to Tudicla by Gliozzi and Malatesta (1983); to Tudiclidae by Squires (1984) and Squires (1987); to Neogastropoda by Sepkoski (2002); and to Muricinae by Squires (2015).
Synonymy list
| Year | Name and author |
|---|---|
| 1918 | Pseudoperissolax Clark pp. 180 - 181 |
| 1928 | Pseudoperissolax Nagao p. 114 |
| 1938 | Pseudoperissolax Turner p. 91 |
| 1944 | Pseudoperissolax Durham p. 168 |
| 1958 | Pseudoperissolax Oyama and Mizuno p. 594 |
| 1983 | Tudicla (Pseudoperissolax) Gliozzi and Malatesta p. 107 |
| 1984 | Pseudoperissolax Squires p. 34 |
| 1987 | Pseudoperissolax Squires p. 45 |
| 2002 | Pseudoperissolax Sepkoski |
| 2015 | Pseudoperissolax Squires p. 578 |
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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. †Pseudoperissolax Clark 1918
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†Pseudoperissolax blakei Conrad 1855
†Pseudoperissolax blakei praeblakei Vokes 1939
†Pseudoperissolax iseakai Oyama and Mizuno 1958
†Pseudoperissolax merriami Clark 1918
†Pseudoperissolax tricarnatus Weaver 1905
†Pseudoperissolax trophonoides Tegland 1933
†Tudicla (Pseudoperissolax) hourqui Collignon 1951
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. L. Squires 2015 | Shell size medium, up to height 62 mm height (spire incomplete). Fusiform with angulate whorls, spire moderately high, last whorl subquadrate, neck constricted, siphonal canal approximately half of shell height. Apical angle 72° to 84°. Protoconch 1.5 to 1.75 whorls, lowly domal, smooth. Teleoconch up to approximately 7.5 whorls. Suture impressed and can show variation in dip on spire whorls. Early on spire, spiral riblets develop, and convex whorls transition into shouldered whorls consisting of ramp, weak carina with nodes on shoulder, and several unnoded spiral riblets (with spiral lirae in interspaces) anterior to carina but slightly weaker than carina. Spiral riblets also present, at this stage, on dorsal side of long, anterior siphonal canal. All subsequent whorls covered by spiral riblets becoming increasingly stronger with growth. Antepenultimate and penultimate whorls with single, prominently angulate carina bearing many lenticular nodes. Shell anterior to carina becoming less convex and more straight sided with growth. Last whorl with two or three (rarely four) prominently angulate carinae bearing numerous spinose, pustulose, or lenticular nodes. Aperture subquadrate. Outer lip simple but varix can be present, as well as several closely spaced varices near outer lip. Penultimate whorl can have single varix on left side of whorl. Varices can be somewhat aligned but not continuous. Outer lip without lirae on interior. Columella smooth, except for single rare pseudofold near base of columella on at least one species. Inner lip can have inductra. Siphonal canal long, straight, and smooth. Growth line opisthocline near carinae, opisthocyrt on ramp. |