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Schiappa, Spinosa & Snyder |
1995 |
Nevadoceras, a new Early Permian adrianitid (Ammonoidea) from Nevada.
Journal of Paleontology, 69: 1073-1079, 5 figs., Lawrence, KS.
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Schiappa, Hemmesch & Spinosa |
2005 |
Cisuralian ammonoid genus Uraloceras in North America. [Schiappa,T.A., N.T.Hemmesch, C.Spinosa & Nassichuk,W.W.]
Journal of Paleontology, 79 (2): 366-377, 9 fig., 6 tab., Lawrence, KS.
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