. The Cyathaspididae; a family of Silurian and Devonian jawless vertebrates. Cyathaspididae. Fig. 118. Vernonaspis vaningeni, ventral shield, CNHM, PF 853 (X 3). A, ventral view; B, lateral view of left side. Vernonaspis, consists of an elongate oval of three ridges in the type (fig. 116, pm). The ridge pattern of the lateral epitegum is typical of the genus: the ridges curve over the orbit and converge with trans- verse rostral ridges anteriorly on the preorbital process; behind the orbit a few sharp-crested ridges run parallel to the edge, while medial to them the ridges are arranged diagona
. The Cyathaspididae; a family of Silurian and Devonian jawless vertebrates. Cyathaspididae. Fig. 118. Vernonaspis vaningeni, ventral shield, CNHM, PF 853 (X 3). A, ventral view; B, lateral view of left side. Vernonaspis, consists of an elongate oval of three ridges in the type (fig. 116, pm). The ridge pattern of the lateral epitegum is typical of the genus: the ridges curve over the orbit and converge with trans- verse rostral ridges anteriorly on the preorbital process; behind the orbit a few sharp-crested ridges run parallel to the edge, while medial to them the ridges are arranged diagonally anteriorly and become longitudinal more posteriorly. The ventral shield (fig. 118) is deeply arched posteriorly, has a small postero-median lobe (CNHM, PF854), and a median notch on the anterior border (CNHM, PF853). The dentine ridges are sinuously longitudinal except that they radiate fan-wise at the an- terior end, and a few ridges run parallel to the lateral borders. Vernonaspis bryanti, new species. Figures 119-120. Phyllocarida (in part) Clarke, 1907, Bull. N. Y. State Mus., 107, pi. 8, figs. 20-21. Anatifop&is wardelli (in part) Ruedemann, 1916, Bull. N. Y. State Mus., 189, pp. 102-105, pi. 32, figs. 3, 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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