Detailed information for reference 33768Woodring, W.P. and A.A. Olsson (1957) Bathygalea, a Genus of Moderately Deep-Water and Deep-Water Miocene to Recent Cassids: A study in morphologic and adaptive evolution. US Geological Survey Professional Paper. Vol. 314-B. Pp. 21-26, pls. 7 - 10.
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