B. A. Schumacher. 2007. A new polycotylid plesiosaur (Reptilia; Sauropterygia) from the Greenhorn Limestone (Upper Cretaceous; lower upper Cenomanian), Black Hills, South Dakota. Geological Society of America Special Paper 427:133-146
DOI ↗
Bibliographie (1)
B. A. Schumacher. 2007. A new polycotylid plesiosaur (Reptilia; Sauropterygia) from the Greenhorn Limestone (Upper Cretaceous; lower upper Cenomanian), Black Hills, South Dakota. Geological Society of America Special Paper 427:133-146
DOI ↗