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Monasteridae
Taxonomy
Monasteridae was named by Schuchert (1915). It is not extant. Its type is Palaeaster (Monaster).
It was assigned to Stenasteracea by Schuchert (1915); to Asterozoa by Spencer (1927); to Eophiuricae by Owen (1965); to Tumulosina by Spencer and Wright (1966); to Asteroidea by Blake and Elliott (2003); and to Kermasida by Blake (2018).
It was assigned to Stenasteracea by Schuchert (1915); to Asterozoa by Spencer (1927); to Eophiuricae by Owen (1965); to Tumulosina by Spencer and Wright (1966); to Asteroidea by Blake and Elliott (2003); and to Kermasida by Blake (2018).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 1915 | Monasteridae Schuchert |
| 1927 | Monasteridae Spencer p. 359 |
| 1965 | Monasteridae Owen p. 546 |
| 1966 | Monasteridae Spencer and Wright p. U54 |
| 2003 | Monasteridae Blake and Elliott p. 485 |
| 2018 | Monasteridae Blake p. 48 |
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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.
Fm. †Monasteridae Schuchert 1915
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G. †Monaster Etheridge Jr. 1892
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†Monaster clarkei de Koninck 1877
Invalid names: Etheridgaster Gregory 1899 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. B. Blake and D. R. Elliott 2003 | Arm petaloid, distal primary arm ossicles enlarged. Primary circlet probably enlarged but largely obscured by granules in available material. "Extraneous" or "x" ossicles not observed. Carinals not exposed proximally but accesssories suggest carinals absent or only weakly developed. Distal carinals in single series, ossicles abutted; no lateral series. Marginals in single series, robust, tabular; marginals, adambulacrals together forming rounded arm margin. Distal adambulacrals robust; adambulacral ventral-lateral spine fringe present. Axillary ossicles, if developed, not exposed. Probable actinal ossicles paxillate, in multiple series; series terminate as arm expands distally. Ambulacral, adambulacrals probably paired. Dorsal podial pores present, ambulacrals not foreshortened, podia in two rows. Disk adambulacrals unkown. enlarged pustules not recognized; surface texture finely pustulose, accessory granules present. |