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Article: Palaeoecology of Appalachian gypidulid brachiopods

Publication: Palaeontology
Volume: 16
Part: 2
Publication Date: June 1973
Page(s): 381 389
Author(s): E. J. Anderson and J. H. Makurath
Addition Information

How to Cite

ANDERSON, E. J., MAKURATH, J. H. 1973. Palaeoecology of Appalachian gypidulid brachiopods. Palaeontology16, 2, 381–389.

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The Palaeontological Association (Free Access)


Gypidulid brachiopods lived unattached, oriented in a beak-down position aided by weighting of the posterior end of the pedicle valve. This adaptation evolved as a specialization for occupying well reworked and occasionally shifting sand substrates. This sedimentary environment characterizes the open shelf, near wave base in transgressing epeiric seas. The occurrence of Gypidula and its associated faunal community suggest a substrate-salinity control for the analogous Pentamerus Community of Ziegler.
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