Author:
Clarkson E. N. K.,Tripp R. P.
Abstract
ABSTRACTCalyptaulax brongniartii (Portlock) from the Caradocian Bardahessiagh Formation, Pomeroy, Northern Ireland is redescribed. Equivalent material from Scottish horizons (Balclatchie and Ardwell groups) is regarded as belonging to separate populations. Campbell's system of notation is used to describe variation in the arrangement and number of lenses in the eye. The most closely related species is C. strasburgensis (Ulrich & Delo) from the Edinburg Limestone of Virginia, U.S.A.
Publisher
Cambridge University Press (CUP)
Subject
Paleontology,Earth and Planetary Sciences (miscellaneous)
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