. The Cyathaspididae; a family of Silurian and Devonian jawless vertebrates. Cyathaspididae. Fig. 116. Vernonaspis raningeni, type; incomplete dorsal shield, Princeton 12916 (X 3). A, dorso-lateral view; B, lateral view of right side. orb, orbit; pbl, postbranchial lobe; pm, pineal macula; pop, preorbital process. Discussion.—The considerable taxonomic confusion that has de- veloped in the history of this species and of "Cyathaspis" wardelli has been reviewed but not resolved by Flower and Wayland-Smith. The syntypic material of Ruedemann's species, Anatifopsis wardelli, comprises th
. The Cyathaspididae; a family of Silurian and Devonian jawless vertebrates. Cyathaspididae. Fig. 116. Vernonaspis raningeni, type; incomplete dorsal shield, Princeton 12916 (X 3). A, dorso-lateral view; B, lateral view of right side. orb, orbit; pbl, postbranchial lobe; pm, pineal macula; pop, preorbital process. Discussion.—The considerable taxonomic confusion that has de- veloped in the history of this species and of "Cyathaspis" wardelli has been reviewed but not resolved by Flower and Wayland-Smith. The syntypic material of Ruedemann's species, Anatifopsis wardelli, comprises the twelve specimens that he figured (1916, pi. 32, figs. 1- 12), but he did not designate a holotype. A lectotype was named by Flower and Wayland-Smith, and they intentionally selected an un- recognizable fragment (New York State Mus. 9613). This made future use of the specific name, wardelli, impracticable, and also effectively prohibited use of the generic name, Eoarchegonaspis, which was based on this species. Since the lectotype of Anatifopsis wardelli exhibits no diagnostic characters, the other eleven specimens cannot be identified with it and are available for systematic restudy. In my opinion this suite of specimens includes two species of Ver- nonaspis, as well as some undeterminable fragments. A Vernonaspis. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Denison, Robert H. (Robert Howland), 1911-1985; Chicago Natural History Museum. Chicago : Chicago Natural History Museum Press
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