. A diapsid reptile from the Pennsylvanian of Kansas. Reptiles, Fossil -- Kansas; Paleontology -- Pennsylvanian; Paleontology -- Kansas. 1980 PENNSYLVANIAN DIAPSID REPTILE 39. Fig. 17.—Petrolacosatirus kansensis Lane. Pectoral girdle. (A) Lateral view of left scapulacoracoid in ar- ticulation with limb, KUVP 9957a, X (B) Ventral view of .slightly immature interclavicle, KUVP 9959b, X (C) Lateral view of left clavicle, immature, KUVP 9958, X (D) Lateral and medial views of right scapulacoracoid, KUVP 33609, X 2. See Figs. 12 and 13 for cleithrum. lateral view. The narrow dorsal
. A diapsid reptile from the Pennsylvanian of Kansas. Reptiles, Fossil -- Kansas; Paleontology -- Pennsylvanian; Paleontology -- Kansas. 1980 PENNSYLVANIAN DIAPSID REPTILE 39. Fig. 17.—Petrolacosatirus kansensis Lane. Pectoral girdle. (A) Lateral view of left scapulacoracoid in ar- ticulation with limb, KUVP 9957a, X (B) Ventral view of .slightly immature interclavicle, KUVP 9959b, X (C) Lateral view of left clavicle, immature, KUVP 9958, X (D) Lateral and medial views of right scapulacoracoid, KUVP 33609, X 2. See Figs. 12 and 13 for cleithrum. lateral view. The narrow dorsal process of the clavicle probably provided excellent at- tachment for the clavicular portion of the deltoid and trapezius muscles. The plate-like portion of the clavicle is relatively massive in comparison to that in primitive captorhino- morphs, but is comparable to the clavicle of Araeoscelis (Vaughn, 1955). This plate is in- flected medially on the shaft at an angle of about 45 degrees. The expansion of this por- tion of the clavicle is formed largely by a strong anterior curvature of the thickened anterior margin. The lower portion of the clavicle has striations running to the ventro- medial margin. The ventromedial margin is gently convex. It appears that the clavicles covered the anterior part of the head of the interclavicle head but did not meet at the midline. Interclavicle.—The isolated, immature, in- terclavicle found in KUVP 9959b has a dia- mond-shaped head and a long stem (Fig. 17b). The exposed ventral surface of the head is strongly convex. The greater part of the head is depressed, bears no sculpturing, and lies internal to the clavicles. This iso- lated element has been associated with Petro- lacosaurtis partly because the depressed areas. 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
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Keywords: ., bookcentury1900, bookcollectionbi, booksubjectpaleontologykansas
