Revision of the Sauropterygian reptile genus Cymatosaurus v. Fritsch, 1894, and the relationships of Germanosaurus Nopcsa, 1928, from the Middle Triassic of Europe / Olivier Rieppel --.

n.s. no.36(1997)

The Triassic reptile, Poposaurus / Edwin H. Colbert --

v.14:no.4(1961)

Permo-Carboniferous fresh water burrows / Everett C. Olson -- and Kathryn Bolles --.

v.33:no.15(1975)