Platanaster

Platanaster
Scientific classification
Kingdom:	Animalia
Phylum:	Echinodermata
Class:	Asteroidea
Order:	† Platyasterida
Family:	† Palasteriscidae
Subfamily:	† Palasteriscinae
Genus:	† Platanaster

Last updated August 13, 2025

Platanaster ('plate star') is an extinct genus of sea stars.

Taxonomy

†Palasteriscidae

†Urasterellinae
- †Cnemidactis
  - †C. girvanensis
- †Urasterella
  - †U. asperrimus
†Palasteriscinae
- †Lanthanaster ^[1]
  - †L. cruciformis
- †Platanaster
  - †P. ordovicus ^[2]
- †Baliactis
  - †B. ordovicus

References

↑ Blake, Daniel B. (November 2007). "Two Late Ordovician asteroids (Echinodermata) with characters suggestive of early ophiuroids" . Journal of Paleontology. 81 (6): 1476–1485. Bibcode:2007JPal...81.1476B. doi:10.1666/05-130.1. S2CID 131513655.
↑ Blake, Daniel B. (1994). "Re-Evaluation of the Palasteriscidae Gregory, 1900, and the Early Phylogeny of the Asteroidea (Echinodermata)" . Journal of Paleontology. 68 (1): 123–134. Bibcode:1994JPal...68..123B. doi:10.1017/S0022336000025646. ISSN 0022-3360. JSTOR 1306091. S2CID 132568577.

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[Blake-1] Blake, Daniel B. (November 2007). "Two Late Ordovician asteroids (Echinodermata) with characters suggestive of early ophiuroids" . Journal of Paleontology. 81 (6): 1476–1485. Bibcode:2007JPal...81.1476B. doi:10.1666/05-130.1. S2CID 131513655.

[2] Blake, Daniel B. (1994). "Re-Evaluation of the Palasteriscidae Gregory, 1900, and the Early Phylogeny of the Asteroidea (Echinodermata)" . Journal of Paleontology. 68 (1): 123–134. Bibcode:1994JPal...68..123B. doi:10.1017/S0022336000025646. ISSN 0022-3360. JSTOR 1306091. S2CID 132568577.

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