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Cardita unica
Taxonomy
Cardita unica was named by Kensley and Pether (1986). Its type specimen is SAM-PQ-KN566, a shell, and it is a 3D body fossil. Its type locality is Koingnaas 30m Complex, which is in a Pleistocene transition zone/lower shoreface horizon in South Africa.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1986 | Cardita unica Kensley and Pether p. 204 fig. 37 |
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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.
†Cardita unica Kensley and Pether 1986
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| B. Kensley and J. Pether 1986 | Shell robust, thick, oblong, anterior margin rounded, ventral margin flattened, posterior margin more pointed than anterior. External sculpture consisting of 27 radiating ribs, becoming broadly flattened near ventral margin, separated by narrow grooves; ribs on posterior part of shell narrower than on rest of shell. Concentric growth lines irregular, wavy. Lower anterior and posterior margin and ventral margin on shell interior crenulate, crenulations largest at posteroventral corner. Anterior adductor scar oval; small circular hollow dorsal to anterior muscle scar, hidden under anterior hinge line. Posterior adductor scar anteriorly truncate, posteriorly rounded. Hinge line broad, solid; anterior lateral tooth almost vertical, short, separated from anterior cardinal tooth by triangular pit; anterior cardinal tooth acutely triangular with posterior margin twice length of anterior margin, separated from posterior cardinal tooth by narrowly triangular oblique groove; posterior cardinal tooth elongate, with horizontal dorsal part and oblique ventral part. Ventral margin of hinge area sinuous. |
Measurements
No measurements are available
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| Source: f = family, superf = superfamily | |||||
| References: Sanchez Roig 1926, Eames 1951 | |||||
Age range: Early/Lower Pleistocene or 2.58000 to 0.77400 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Pleistocene | South Africa (Western Cape) | Cardita unica (type locality: 118311) |