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Euomphalus triliris
Taxonomy
Straparolus triliris was named by Easton (1943). Its type specimen is UC 40304, a shell, and it is not a trace fossil.
It was recombined as Straparollus (Straparollus) triliris by Yochelson and Saunders (1967); it was recombined as Euomphalus triliris by Wagner (2023).
It was recombined as Straparollus (Straparollus) triliris by Yochelson and Saunders (1967); it was recombined as Euomphalus triliris by Wagner (2023).
Synonymy list
| Year | Name and author |
|---|---|
| 1943 | Straparolus triliris Easton p. 151 figs. pl. 24 f. 20-21 |
| 1967 | Straparollus (Straparollus) triliris Yochelson and Saunders p. 227 |
| 2023 | Euomphalus triliris Wagner p. S6678 |
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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.
†Euomphalus triliris Easton 1943
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| W. H. Easton 1943 | Shell subturbinate, portion of apex including only nucleus depressed, four and onehalf whorls present. Greatest diameter, 12.5 mm.; height, 7 mm.; width of aperture, 3.3 mm.; height, 4.0 mm. Nucleus rounded, unornamented; later whorls angular at upper shoulder, slightly nodose at aperture. Upper portion of body whorl flattened from suture to shoulder; lateral slope almost vertical, concave band present just below angulation of shoulder, whorl expanding laterally below; under surface of whorl evenly rounded. Umbilicus broad, probably steep-walled and deep, partially filled in holotype. Surface ornamented chiefly by transverse axial lirae. very slightly inclined posteriorly on body whorl; on .spire less well defined, nearly transverse. Three ill-defined revolving ridges present on upper surface of body whorl within 2 mm. of aperture, apparently terminating in nodes. |
Measurements
No measurements are available
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| Source: g = genus, c = class | |||||
| References: Wagner 1999, Kiessling 2004 | |||||
Collections
No collection or age range data are available