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Haughtonaster
Taxonomy
Haughtonaster was named by Rilett (1971). It is not extant. Its type is Haughtonaster reedi.
It was assigned to Eophiuridae by Rilett (1971) and Jell and Theron (1999).
It was assigned to Eophiuridae by Rilett (1971) and Jell and Theron (1999).
Species
H. reedi (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 1971 | Haughtonaster Rilett |
| 1999 | Haughtonaster Jell and Theron p. 157 |
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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 | |
|---|---|---|
| P. A. Jell and J. N. Theron 1999 | Disc pentagonal, dorsal surface of smooth oval plates surrounded by an irregular mass of fine, almost spicular elements; ventral interradii triangular, with polygonal plates having some perforations on sutures (i.e. a few oppositely scalloped margins of plates). Ambulacrals offset across arm axis, rectangular in dorsal view; adambulacrals wide and gently oblique to arm axis in ventral view, forming lateral walls of arm; podial basins subcircular, very deep. 1st ambulacral with strong curved ridge forming distinctive elliptical basins interradially. |