Easton, W. H. (1943). The fauna of the Pitkin Formation of Arkansas. <em>Journal of Paleontology.</em> 17(2): 125-154. page(s): 150, pl. 24, fig. 23 [details] Available for editors [request]
original descriptionEaston, W. H. (1943). The fauna of the Pitkin Formation of Arkansas. <em>Journal of Paleontology.</em> 17(2): 125-154. page(s): 150, pl. 24, fig. 23 [details] Available for editors [request]
Present Inaccurate Introduced: alien Containing type locality
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