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Luidia etchegoinensis
Taxonomy
Luidia etchegoinensis was named by Blake (1973). Its type specimen is Holotype 10652, UCMP B-5046 and is a 3D body fossil. Its type locality is Asteroidea, Etchegoin Fm., Kettleman Hills, Avenal, which is in a Pliocene coastal sandstone in the Etchegoin Formation of California.
Synonymy list
| Year | Name and author |
|---|---|
| 1973 | Luidia etchegoinensis Blake p. 36 figs. pl. 12 fig. 1-20 |
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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.
†Luidia etchegoinensis Blake 1973
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. B. Blake 1973 | Alternata Group Luidia, inferomarginal outline ovate, oral surface outline linear, spine bases prominent; inner face step gentle, superambulacral boss weakly developed, distal articulation ridge long, symmetrical; ambulacral body massive, long, strongly triangular, surface of articulation with neighboring ambulacral very low; adambulacral pentagonal, with prominent medial spine bases, depression for the proximal face muscle abruptly tapering; paxillae massive, bear massive, densely spaced, tablet-shaped granules. |