The present record of two species of brachyurous decapod crustaceans, Costacopluma grayi Feldmann & Portell, 2007 and Stevea martini sp. nov., from the lower Paleocene Pine Barren Member (Clayton Formation) in south-central Alabama, constitutes an extension of the range of the former and the sole occurrence of the latter. Previously, C. grayi was described from the middle Eocene Tallahatta Formation in Alabama. Stevea martini sp. nov. constitutes only the second species of the genus and the sole fossil occurrence known to date.

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Scripta Geologica

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Feldmann, R., Schweitzer, C. E., & Portell, R. W. (2014). [Proceedings of the 5th Symposium on Mesozoic and Cenozoic Decapod Crustaceans, Krakow, Poland, 2013: A tribute to Pál Mihály Müller / R.H.B. Fraaije, M. Hyžný, J.W.M. Jagt, M. Krobicki & B.W.M. van Bakel (eds.)]: Crabs (Decapoda, Brachyura) from the lower Paleocene of Alabama, USA. Scripta Geologica, 147, 135–151.