Archive image from page 113 of The Cyathaspididae; a family of. The Cyathaspididae; a family of Silurian and Devonian jawless vertebrates cyathaspididaefa135deni Year: 1964 416 FIELDIANA: GEOLOGY, VOLUME 13 Fig. 140. Americaspis americana, restoration of dorsal shield in dorsal view (about X 2). Ridge pattern shown in a generalized way, with characteristic irreg- ularities omitted; ridges actually finer than drawn. orb, orbit. The crests of the ridges are generally somewhat convex, possibly slightly flatter on the ventral shield, and higher and sharper laterally on the dorsal shield. Amer
Archive image from page 113 of The Cyathaspididae; a family of. The Cyathaspididae; a family of Silurian and Devonian jawless vertebrates cyathaspididaefa135deni Year: 1964 416 FIELDIANA: GEOLOGY, VOLUME 13 Fig. 140. Americaspis americana, restoration of dorsal shield in dorsal view (about X 2). Ridge pattern shown in a generalized way, with characteristic irreg- ularities omitted; ridges actually finer than drawn. orb, orbit. The crests of the ridges are generally somewhat convex, possibly slightly flatter on the ventral shield, and higher and sharper laterally on the dorsal shield. Americaspis claypolei,1 new species. Figure 141. Type.—CNHM, PF 866, an incomplete and crushed dorsal shield (fig. 141). 1 In honor of Edward W. Claypole (1835-1901) who described the first Palae- aspis.
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Keywords: 1900, 1960, 1964, archive, biodiversity, book, bookauthor, bookcentury, bookcollection, bookcontributor, bookdecade, bookpublisher, booksubject, bookyear, chicago_chicago_natural_history_museum_press, chicago_natural_history_museum, cyathaspididae, denison_robert_h_robert_howland_1911_1985, drawing, historical, history, illustration, image, page, picture, print, reference, university_of_illinois_urbana_champaign, vintage
