Some new post- Paleozoic sea stars ( Asteroidea: Echinodermata) and comments on taxon endurance.

D. B. Blake

doi:10.1017/S0022336000022630

Some new post- Paleozoic sea stars ( Asteroidea: Echinodermata) and comments on taxon endurance.

D. B. Blake

Earth Science and Environmental Change

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Abstract

Five Jurassic through Oligocene sea stars are described; all are assignable to modern genera and two (Tethyaster jurassicus; Mediaster hayi) represent new species. Tethyaster and Pseudarchaster are morphologically similar but represent separate orders; occurrence of both in Jurassic sediments suggests close common ancestry. Many post-Paleozoic sea stars appear enduring, perhaps because of broad ecological tolerances and construction; the fossils described here probably are not unique as asteroid living fossils. -Author

Original language	English (US)
Pages (from-to)	1103-1119
Number of pages	17
Journal	Journal of Paleontology
Volume	60
Issue number	5
DOIs	https://doi.org/10.1017/S0022336000022630
State	Published - 1986

ASJC Scopus subject areas

Palaeontology

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10.1017/S0022336000022630

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AB - Five Jurassic through Oligocene sea stars are described; all are assignable to modern genera and two (Tethyaster jurassicus; Mediaster hayi) represent new species. Tethyaster and Pseudarchaster are morphologically similar but represent separate orders; occurrence of both in Jurassic sediments suggests close common ancestry. Many post-Paleozoic sea stars appear enduring, perhaps because of broad ecological tolerances and construction; the fossils described here probably are not unique as asteroid living fossils. -Author

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Some new post- Paleozoic sea stars ( Asteroidea: Echinodermata) and comments on taxon endurance.

Abstract

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