. A diapsid reptile from the Pennsylvanian of Kansas. Reptiles, Fossil -- Kansas; Paleontology -- Pennsylvanian; Paleontology -- Kansas. Fic. 23.—Petrolacosaurus kansctuis Lane. Pattern of internal cranial ridges or thickenings in (A) dorsal, (B) ventral and (C) lateral \ie\vs, x 2. Composite. See tevt for further 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 Reisz, Robert. Lawrence : University of Kansas

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Keywords: ., bookcentury1900, bookcollectionbi, booksubjectpaleontologykansas