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Clisocolus corrugatus
Taxonomy
Clisocolus corrugatus was named by Popenoe (1937). Its type specimen is CIT (IP) 3439 and is a 3D body fossil. Its type locality is CIT loc. 302, Santa Ana Mountains, which is in a Turonian marine horizon in the Ladd Formation of California.
Synonymy list
Year | Name and author |
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1937 | Clisocolus corrugatus Popenoe p. 390 figs. Plate 47, figures 9, 10, 12 |
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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.
†Clisocolus corrugatus Popenoe 1937
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Diagnosis
Reference | Diagnosis | |
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W. P. Popenoe 1937 | Shell of medium size, highly inflated, gibbous in outline; shell substance rather thick; beaks high, prom- inent, prosogyrous, sharply incurved; outline of shell margin below the beaks nearly circular to slightly oval; lunule and escutcheon undefined; ligament ex- ternal, lodged in a deep narrow furrow; hinge edentulous but with a slight thickening of the hinge-line below the beaks and with a shallow pit centrally placed, dorsal to the thickened part; lateral teeth absent; sculpture consisting of rather coarse raised concentric corrugations, spaced at approximately 2 mm. intervals on the median flanks of the mature shell; character of muscle scars and pallial line unknown. |