Petraster is a genus of extinct Asteroid echinoderm that lived from the upper Ordovician to the late Silurian.[2][3] The genus has a large distribution range, fossils have been found in North America, and Australia.[3] Based on related echinoderms, this creature was a slow moving, benthic carnivore[3] that possibly hunted early clams and brachiopods. It also could have had a Planktonic childhood, and also could have regenerated its arms like modern day starfish.[citation needed]
| Petraster Temporal range:
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|---|---|
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| A specimen of Petraster kinahani | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Echinodermata |
| Class: | Asteroidea |
| Genus: | †Petraster Billings, 1858 |
| Species[1] | |
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| Synonyms[2] | |
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References edit
- ^ "Petraster". Global Biodiversity Information Facility. Retrieved 22 December 2021.
- ^ a b "Petraster". Fossilworks. Gateway to the Paleobiology Database. Retrieved 22 December 2021.
- ^ a b c "Petraster †". mindat.org.