Researches on the Structure, Organization, and Classification of the Fossil Reptilia VII Further Observations on Pareiasaurus . e relatively first metatarsal is 2 inches long, 1^ inch wide proximally, and about 2 inches widedistally. The transverse measurement or thickness of the flattened articular ends ismore than an inch. The bone is flattened above, rounded at the sides, and at thedistal extremity in front, and concave in the middle. The first phalange is fully halfan inch long, the second more than three-quarters of an inch long. These bones have 358 PROFESSOR H. G. SEELEY OX TH
Researches on the Structure, Organization, and Classification of the Fossil Reptilia VII Further Observations on Pareiasaurus . e relatively first metatarsal is 2 inches long, 1^ inch wide proximally, and about 2 inches widedistally. The transverse measurement or thickness of the flattened articular ends ismore than an inch. The bone is flattened above, rounded at the sides, and at thedistal extremity in front, and concave in the middle. The first phalange is fully halfan inch long, the second more than three-quarters of an inch long. These bones have 358 PROFESSOR H. G. SEELEY OX THE STRUCTURE, ORGANIZATION, their articular surfaces somewhat saddle-shaped as in the well ossified extremities ofsimilar bones in terrestrial animals. Their transverse measurement is slightly lessthan in the metacarpal bones. The bones become deep at their infero-posteriorborder, which has a rounded margin. This arrangement is associated with the powerof the claws to bend downward, though this claw form is not that of a Carnivoroustype of animal. The claw phalange, as preserved, is nearly 2\ inches long and about Fig. Middle digit of right hind limb showing metatarsal bone, two short phalanges, and the terminal claw phalange. 2 inches wide behind. Its superior surface is convex ; its inferior surface inflated in themiddle of the bone, with lateral channels, and a posterior articular cavity, while it isconcave in length. Portions of three other digits were found at an inch or two lowerlevel. They show metatarsal bones and phalanges. The five digits, as arranged,measure 8 inches across with the bones placed in close contact, while the length ofthe foot is only 6 or 7 inches. The Fore Limb of Pareiasaurus Baini. The right humerus is complete, as are the ulna and radius of the same side of thebody. The carpus comprises a large proximal bone, and small distal bones, whichwere somewhat displaced, and are not completely preserved. Some of the digits arein natural connection with
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Keywords: ., bookauthorseeleyh, bookcentury1800, bookdecade1890, bookyear1892
