Copper, P. (1996). Davidsonia and Rugodavidsonia (New Genus), Cryptic Devonian Atrypid Brachiopods from Europe and South China. Journal of Paleontology. 70(4): 588-602.
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Copper, P.
1996
Davidsonia and Rugodavidsonia (New Genus), Cryptic Devonian Atrypid Brachiopods from Europe and South China