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Asteroidea source details

Blake, D. B.; Reid, R. (1998). Some Albian (Cretaceous) asteroids (Echinodermata) from Texas and their paleobiological implications. Journal of Paleontology. 72(03): 512-532.
336563
10.1017/s002233600002429x [view]
Blake, D. B.; Reid, R.
1998
Some Albian (Cretaceous) asteroids (Echinodermata) from Texas and their paleobiological implications
Journal of Paleontology
72(03): 512-532
Publication
An asteroid fauna is described from the Albian (Cretaceous) interval of the Washita Group of central Texas. New genera and species are Alkaidia sumralli, (Benthopectinidae), Capellia mauricei (Goniasteridae), and Betelgeusia reidi (Radiasteridae). Additional new genera are Fomalhautia (Goniasteridae), and Denebia and Altairia (Ophidiasteridae). Crateraster texensis (Goniasteridae), new combination, is similar to the European type species, C. quinqueloba. An unnamed species of Crateraster and an unassigned goniasterid are also present. All Washita genera are extinct, but all belong to extant families. The fauna is largely distinct from that of the somewhat younger European Cretaceous chalk. The Radiasteridae (e.g., Betelgeusia) is inferred to hold a basal position in the Paxillosida; Betelgeusia extends the range of the family back to the Cretaceous, closer to the diversification of the living asteroid orders. Asteroids capable of burying themselves in sediment (and only self-buriers) share some form of channelization for the passage of water currents between the primary ossicles of the body surface. Channels in Betelgeusia indicate semi-infaunal habits similar to those of living Astropecten and Luidia. Betelgeusia represents the third semi-infaunal paxillosidan family now known from the Cretaceous, although none are known from older rocks, suggesting a broadening of the asteroid adaptive zone during the Cretaceous. The Goniasteridae, Radiasteridae, and Benthopectinidae are less important in shelf settings today than they appear to have been during Washita deposition, whereas the Astropectinidae, Luidiidae, and the Echinasteridae are absent from the Washita although they are common today in similar settings.
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2018-12-20 02:54:53Z
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Alkaidia Blake & Reid, 1998 † (original description)
Alkaidia sumralli Blake & Reid, 1998 † (original description)
Altairia Blake & Reid, 1998 † (original description)
Betelgeusia Blake & Reid, 1998 † (original description)
Betelgeusia reidi Blake & Reid, 1998 † (original description)
Capellia Blake & Reid, 1998 † (original description)
Capellia mauricei Blake & Reid, 1998 † (original description)
Crateraster texensis (Adkins & Winton, 1920) † (new combination reference)
Denebia Blake & Reid, 1998 † (original description)
Formalhautia Blake & Reid, 1998 † (original description)
 Fossil range

Cretaceous (Albian) [details]

 Fossil range

Cretaceous (Albian) [details]

 Fossil range

Cretaceous (Albian) [details]

 Fossil range

Cretaceous (Albian) [details]

 Fossil range

Cretaceous (Albian) [details]

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