| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Ophryaster
Taxonomy
Ophryaster was named by Spencer (1913) [Sepkoski's age data: K Turo T Mi]. It is not extant.
It was assigned to Goniasteridae by Spencer (1913), Spencer and Wright (1966) and Breton (1992); and to Valvatida by Sepkoski (2002).
It was assigned to Goniasteridae by Spencer (1913), Spencer and Wright (1966) and Breton (1992); and to Valvatida by Sepkoski (2002).
Synonymy list
| Year | Name and author |
|---|---|
| 1913 | Ophryaster Spencer |
| 1966 | Ophryaster Spencer and Wright p. U62 |
| 1992 | Ophryaster Breton p. 245 |
| 2002 | Ophryaster Sepkoski |
Is something missing? Join the Paleobiology Database and enter the data
|
|
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. †Ophryaster Spencer 1913
show all | hide all
†Ophryaster argencienis Mercier 1935
†Ophryaster bretoni Calzada and Gomez Pallerola 1993
†Ophryaster dorsolevis Schulz and Weitschat 1981
†Ophryaster maastrichtensis Umbgrove 1925
†Ophryaster magnus Spencer 1913
†Ophryaster novaezelandiae Fell 1952
†Ophryaster oligoplax Sladen 1891
†Ophryaster saucatsensis Valette 1925
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| G. Breton 1992 | Long slender arms with a progresive trasition to the disk. Interbrachial arc regularly rounded. Marginal plats long and narrow, numerous. Median marginal plates relatively low. Granule-pits well demarcated, generally lacking on the adradial margin of the external face. Abactinal plates small, without distinct space for papulae. Few rows of abactinal extanding up the the arm tip. Pedicellaria-pits elongate, numerous, expecially on the abradial side of the inferomarginal plates, the actinals and the adambulacrals. |