Article · Wikipedia archive · Last revised Jul 13, 2026

Petraster

Petraster is a genus of extinct starfish that lived from the upper Ordovician to the late Silurian. The genus has a large distribution range, fossils have been found in North America, and Australia.

Last revised
Jul 13, 2026
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≈ 1 min
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Wikipedia ↗
Petraster
Temporal range:
Petraster sp.
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Echinodermata
Class: Asteroidea
Genus: †Petraster
Billings, 1858
Species1
  • †Coelaster americanus (d'Orbigny, 1850)
  • †Palasterina kinahani (Baily, 1878)
  • †Palasterina ramseyensis (Hicks, 1873)
  • †Palasterina rigidus (Billings, 1857)
  • †Petraster angustior Withers & Keble, 1934
  • †Petraster crozonensis Blake et al., 2016
  • †Petraster richi Withers & Keble, 1934
  • †Petraster smythi McCoy, 1874
Synonyms2
  • Uranaster Gregory, 1899

Petraster is a genus of extinct starfish that lived from the upper Ordovician to the late Silurian.23 The genus has a large distribution range, fossils have been found in North America, and Australia.3

P. kinahani source ↗
References

References

  1. "Petraster". Global Biodiversity Information Facility. Retrieved 22 December 2021.
  2. "Petraster". Paleobiology Database. Retrieved 22 December 2021.
  3. "Petraster †". mindat.org.