Archive image from page 84 of The Cyathaspididae; a family of. The Cyathaspididae; a family of Silurian and Devonian jawless vertebrates cyathaspididaefa135deni Year: 1964 Fig. 127. Pionaspis planicosta, restoration of dorsal shield based on type (X 1). A, dorsal view; B, lateral view of left side. bro, branchial opening; orb, orbit; pbl, postbranchial lobe; ro, rostrum.
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Photo credit: © Actep Burstov / Alamy / Afripics
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Keywords: 1960, 1964, archive, book, bookauthor, bookdecade, bookpublisher, booksponsor, 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, zimmermann_a_albrecht_b_1860