Tops and Bottoms: Singular Possessive Nouns by Mrs Dunaways Classroom
Geology . Fig. 409.—Spoonbi.l Dinosaurs of the Cretaceous (Hadrosaurus mirabilis Leidy) asinterpreted by Knight. (Osborn, Copyrighted by the Am. Mus. of Nat. Hist.) Th° most singular dinosaurian development appeared in the Cera-tops