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Aulacolatiaster
Taxonomy
Aulacolatiaster was named by Jell and Theron (1999). It is not extant. Its type is Aulacolatiaster breviramus.
It was assigned to Promopalaeasteridae by Jell and Theron (1999); and to Hadrosida by Blake (2018).
It was assigned to Promopalaeasteridae by Jell and Theron (1999); and to Hadrosida by Blake (2018).
Species
A. breviramus (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 1999 | Aulacolatiaster Jell and Theron p. 151 |
| 2018 | Aulacolatiaster Blake p. 45 |
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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.
G. †Aulacolatiaster Jell and Theron 1999
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†Aulacolatiaster breviramus Jell and Theron 1999
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| P. A. Jell and J. N. Theron 1999 | Arms 5 short (no longer than diameter of disc), wide. Dorsal surface with primary ossicular ring of large ossicles centrally. Ventral surface dominated by wide elliptical ambulacral grooves; amulacrals wide, opposite, with extremely shallow ambulacral channel, with fine parallel ambulacral ridges running adradially parallel to plate margins ans separating the podial basins; 1st ambulacrals large, oriented vertically, paires across interradii; inferomarginals with pair of short lateral spines, becoming elongate proximally, isolating from the margin of the frame at least 1 narrow axillary (odontophore) in each interradius; adambulacrals with transverse row of extremely large prominent tubercles. |