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A new genus of cassiduloid echinoid from the lower Eocene of the Pacific coast of western North America and a new report of Cassidulus ellipticus Kew, 1920, from the lower Eocene of Baja California Sur, Mexico

Published online by Cambridge University Press:  20 May 2016

Richard L. Squires  and
Robert A. Demetrion
Richard L. Squires
Affiliation:
Department of Geological Sciences, California State University, Northridge 91330
Robert A. Demetrion
Affiliation:
Holmes International Middle School, 9351 Paso Robles Avenue, Northridge 91330
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Abstract

The cassiduloid echinoid Calilampas californiensis n. gen. and sp. is described from middle lower Eocene (“Capay Stage”) shallow-marine sandstones in both the middle part of the Bateque Formation, Baja California Sur, Mexico, and the lower part of the Llajas Formation, southern California. The new genus is tentatively placed in family Pliolampadidae. The cassiduloid Cassidulus ellipticus Kew, 1920, previously known only from the “Capay Stage” in California, is also present in “Capay Stage” shallow-marine sandstones of the Bateque Formation.

Type
Research Article
Information
Journal of Paleontology , Volume 69 , Issue 3 , May 1995 , pp. 509 - 515
Copyright
Copyright © The Paleontological Society 

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