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Type locality designation for the Middle Eocene echinoid Fibularia texana (Twitchell)

Published online by Cambridge University Press:  14 July 2015

Louis G. Zachos
Louis G. Zachos*
Affiliation:
2110 Matterhorn Lane, Austin, Texas 78704
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Extract

The Clypeastroid echinoid Fibularia texana (Twitchell) has been reported in the literature from only two localities. Twitchell (Clark and Twitchell, 1915) reported that the holotype was collected by T. H. Aldrich from an unspecified locality in Lee County, Texas, from the “Lower Claiborne,” Middle Eocene. Cooke (1942, 1959) reported F. texana from the Weches Formation, lower Claiborne, in San Augustine County, Texas (see Eargle, 1968, for stratigraphic nomenclature). He intimated that the type occurrence in Lee County was also from the Weches Formation. I have recently collected F. texana from the fossiliferous Cook Mountain (upper Claiborne) deposits exposed along Elm Creek in Lee County. Evidence is presented to show that Aldrich's original collection was from Cook Mountain exposures along Elm Creek, and this is designated as the type locality.

Type
Paleontological Notes
Information
Journal of Paleontology , Volume 64 , Issue 4 , July 1990 , pp. 659
Copyright
Copyright © The Paleontological Society 

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References

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