. The Cyathaspididae; a family of Silurian and Devonian jawless vertebrates. Cyathaspididae. Fig. 141. Americaspis claypolei; A, type, incomplete and crushed dorsal shield, CNHM, PF 866, (X 4/3); B, anterior part of type, (X 4). 417. 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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