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Asteroidea source details
Blake, D.B. and Sprinkle, J. (1996). Astrocratis acutispina, new genus and species, a new asteroid from the Late Cretaceous of Texas. Eclogae Geologicae Helvetiae. 89(3):1311-1320.
336560
Blake, D.B. and Sprinkle, J.
1996
<i>Astrocratis acutispina</i>, new genus and species, a new asteroid from the Late Cretaceous of Texas
Eclogae Geologicae Helvetiae
89(3):1311-1320
Publication
Astrocratis acutispina, n. gen. and sp., is described from the Upper Cretaceous (Campanian) Pflugerville Formation of the upper Austin Group of Texas. USA. Although remarkably similar to Cenozoic Astropecten. A. acutispina differs from Astropecten in pairing of adambulacrals with inferomarginals and development of inferomarginal spines. Astrocratis provides further evidence for a Cretaceous origin of infaunal habits in post-Paleozoic asteroids. Ossicular alignment suggests a phylogenetic lineage separate from that of Astropecten.
Date action by
Astrocratis Blake & Sprinkle, 1996 † (original description)
Astrocratis acutispina Blake & Sprinkle, 1996 † (original description) Fossil range Late Cretaceous (Campanian) [details] |