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Taxonomy
Isocardia tejonensis was named by Waring (1914). It is a 3D body fossil. Its type locality is 1.5 miles East of McCray Wells, which is in an Eocene marine horizon in the Llajas Formation of California.
It was recombined as Callocardia (Nitidavenus) tejonensis by Squires (1984) and Squires (1987); it was recombined as Nitidavenus tejonensis by Vokes (1939) and Hendy (2020).
It was recombined as Callocardia (Nitidavenus) tejonensis by Squires (1984) and Squires (1987); it was recombined as Nitidavenus tejonensis by Vokes (1939) and Hendy (2020).
Synonymy list
| Year | Name and author |
|---|---|
| 1914 | Isocardia tejonensis Waring pp. 784-5 |
| 1916 | Isocardium tejonensis Dickerson pp. 407, 426, 427, 437 |
| 1917 | Isocardia tejonensis Waring p. 93 figs. Pl. 15, Fig. 14 |
| 1939 | Nitidavenus tejonensis Vokes pp. 83 - 84 figs. Plate 12, Figures 11, 13, 14, 15, 16 |
| 1984 | Callocardia (Nitidavenus) tejonensis Squires p. 51 figs. Figure 12h |
| 1987 | Callocardia (Nitidavenus) tejonensis Squires p. 70 fig. 123 |
| 2020 | Nitidavenus tejonensis Hendy |
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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.
†Nitidavenus tejonensis Waring 1914
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| C. A. Waring 1914 | Shell of medium size, thin; valves equal, inflated, rotund, completely closed, margins plain; beaks prosogyrous. Surface marked by concentric bandlike ribs, which become fine and nearly obsolete on the beaks. From one and one-half miles east of the McCray Wells, Ventura County. |