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Trivia sphaericulata
Taxonomy
Cypraea sphaericulata was named by Lamarck (1810).
It was recombined as Trivia (Trivia) sphaericulata by Schilder (1941); it was recombined as Trivia sphaericulata by Sacco (1894), Fehse and Landau (2002) and Fehse and Grego (2006).
It was recombined as Trivia (Trivia) sphaericulata by Schilder (1941); it was recombined as Trivia sphaericulata by Sacco (1894), Fehse and Landau (2002) and Fehse and Grego (2006).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1810 | Cypraea sphaericulata Lamarck p. 107 |
| 1894 | Trivia sphaericulata Sacco p. 47 figs. pl. 3, fig. 29 |
| 1941 | Trivia (Trivia) sphaericulata Schilder p. 73 |
| 2002 | Trivia sphaericulata Fehse and Landau pp. 92 - 93 figs. l/4a-c |
| 2006 | Trivia sphaericulata Fehse and Grego p. 91 |
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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.
†Trivia sphaericulata Lamarck 1810
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. Fehse and B. Landau 2002 | Shell large, solid, and spherical. Spire obscured by callus. Body whorl globose and rounded, about 95% of total height, with the terminals weakly produced and rounded. Dorsum evenly rounded, without a true dorsal sulcus, although a few specimens show a weak dorsal depression, which does not interrupt the ribs. Dorsum completely covered by 22-36 ribs, which vary in thickness and become more close set mid-dorsally. Base and terminals are evenly convex. Aperture wide and curved, especially in the adapically portion. Outer lip very broad, widest in mid-portion, becoming narrower towards the terminals. In some specimens the lip is elevated adapically. The lip is roundly keeled in cross section, with the narrower inner portion, sloping steeply inwards and the wider outer portion, less so, outwards. Outer margin of the lip slightly to strongly, angularly callused. The lip bears 19- 25 strong, equal teeth. Siphonal and anal canals follow the shell profile. Columella convex, tapering steeply inwards, bordered internally by a weak carinal ridge, bearing 16-20 ribs, which continue onto the carinal ridge, where they do not become significantly stronger. The carinal ridge is strongly protruding in the fossular region. Fossula broadly concave and not clearly delimited from the rest of the columella. |