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Xandarosaster
Taxonomy
Xandarosaster was named by Blake (1984) [Sepkoski's age data: J Bajo]. It is not extant. Its type is Xandarosaster hessi.
It was assigned to Paleobenthopectininae by Blake (1984); to Paxillosida by Sepkoski (2002); to Velatida by Villier et al. (2009); and to Spinulosida by Gale and Jagt (2021).
It was assigned to Paleobenthopectininae by Blake (1984); to Paxillosida by Sepkoski (2002); to Velatida by Villier et al. (2009); and to Spinulosida by Gale and Jagt (2021).
Species
X. hessi (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 1984 | Xandarosaster Blake p. 638 |
| 2002 | Xandarosaster Sepkoski |
| 2009 | Xandarosaster Villier et al. p. 396 |
| 2021 | Xandarosaster Gale and Jagt p. 181 |
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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.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. B. Blake 1984 | Benthopectinid with low, conical abactinals bearing medial spine base, prominent articular digitation; flattened, rectangular marginals with single medial spine base; low ambulacrals with very long triangular ambulacral body, lacking enlarged ambulacral/adambulacral articular surface; podial pore large; adambulacrals elongate, rectangular, with large spine. |
Measurements
No measurements are available
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| Source: o = order, c = class, p = phylum | |||||
| References: Aberhan et al. 2004, Blake 1990, Aberhan 1992 | |||||