Basic info | Taxonomic history | Classification | Included Taxa |
Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
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 | |
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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. |
Measurements
No measurements are available
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Source: f = family, c = class | |||||
References: Kiessling 2004, Aberhan et al. 2004 |
Age range: base of the Ypresian to the top of the Late/Upper Eocene or 56.00000 to 33.90000 Ma
Collections (16 total)
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Ypresian | USA (California) | Isocardium tejonensis (122294 122337) | |
Ypresian | USA (Oregon) | Isocardia tejonensis (200796 200797 200803) | |
Ypresian - Lutetian | USA (California) | Callocardia tejonensis (8011 200143) | |
Eocene | Russian Federation | Callocardia tejonensis (50129) | |
Lutetian | USA (Oregon) | Isocardia tejonensis (200893 200894 200895 200896 200897 200912) | |
Late/Upper Eocene | USA (California) | Isocardia tejonensis (193039 type locality: 193040) |