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Brissus bridgeboroensis, a new spatangoid echinoid from the lower Oligocene of southwestern Georgia
Published online by Cambridge University Press: 14 July 2015
Abstract
A new species of Brissus is described from the lower Oligocene (Rupelian–Vicksburgian) Bridgeboro limestone of southwestern Georgia. Brissus bridgeboroensis n. sp. most closely resembles the Recent Brissus unicolor (Leske) of the West Indies and the Gulf of Mexico, but it differs primarily in features of the posterior paired petals. Brissus bridgeboroensis is the oldest known member of the genus from continental North America.
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