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Cornuella
Taxonomy
Cornuella was named by Stinchcomb (1986) [Sepkoski's age data: Cm Trep Sepkoski's reference number: 644].
It was assigned to Hypseloconidae by Stinchcomb (1986); and to Cyrtonellida by Sepkoski (2002).
It was assigned to Hypseloconidae by Stinchcomb (1986); and to Cyrtonellida by Sepkoski (2002).
Species
Synonymy list
Year | Name and author |
---|---|
1986 | Cornuella Stinchcomb p. 621 |
2002 | Cornuella Sepkoski |
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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.
Diagnosis
Reference | Diagnosis | |
---|---|---|
B. L. Stinchcomb 1986 | High cornucopia-shaped diminutive monoplacophoran with apex projecting over anterior apertural margin and terminating in a sharp point. Shell strongly elliptical in cross section. Muscle scars unknown, shell ornamentation consists of evenly spaced radial lines, showing distinct boundaries, that are strongly arched toward presumed anterior part of the shell. Anterior of shell more strongly curved than posterior, producing curvature toward shell apex; shell material unknown. |