Blake, D. B.; Peterson, D. O. (1993). An unusual new asteriid (Echinodermata: Asteroidea) from the Cretaceous of California. Journal of Paleontology. 67(04): 586-589.

336558

10.1017/s0022336000024926 [view]

Blake, D. B.; Peterson, D. O.

1993

67(04): 586-589

Publication

https://www.cambridge.org/core/journals/journal-of-paleontology/article/an-unusual-new-asteriid-echinodermata-asteroidea-from-the-cretaceous-of-california/F08B387D3645526094432A958E2F7DE5

Pegaster stichos n. gen. and sp., from the Cretaceous Chico Formation of Northern California, is the first-known fossil representative of the hitherto monogeneric Neomorphasterinae (Asteroidea: Asteriidae). Pegaster is morphologically similar to living Neomorphaster, again demonstrating the conservative evolution noted elsewhere among asteroids. Pegaster probably lived in a shallow shelf environment subject to strong storm action whereas Neomorphaster is known only from considerably greater depths; Pegaster provides a new example of an asteroid taxon excluded from shallower habitats through time.

Asteroidea

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