. Outlines of natural theology for the use of the Canadian student [microform] : selected and arranged from the most authentic sources. Natural history; Natural theology; Sciences naturelles; Théologie naturelle. 412 posed of from twenty to forty; and, in some species, is four times the length of the head, and equal to the entire length of the body and tail; while the length of the head (in P. dolichodirus) is less than one- thirteenth the entire skeleton. The skull resembles that of the crocodile in its general form, but is rela- tively smaller, and is more related to the lacertian type. The
. Outlines of natural theology for the use of the Canadian student [microform] : selected and arranged from the most authentic sources. Natural history; Natural theology; Sciences naturelles; Théologie naturelle. 412 posed of from twenty to forty; and, in some species, is four times the length of the head, and equal to the entire length of the body and tail; while the length of the head (in P. dolichodirus) is less than one- thirteenth the entire skeleton. The skull resembles that of the crocodile in its general form, but is rela- tively smaller, and is more related to the lacertian type. The parietal bone is more triquetral than in crocodiles; but the zygomatic bone is attached to its lower end. The breathing apertures are situated anterior to the orbits, on the highest part of the head. The lower jaw has the usual structure of saurians, but the dentary bone is greatly expanded anteriorly, and united in front. The teeth are im- planted in separate sockets, as in the crocodile, and there are from thirty to forty on each side the jaws. They are conical, slender, long, pointed, slightly recurved, and longitudinally grooved from the base upwards, having a long round fang. The pulp cavity is long and single, surrounded by a body of fine dentine, covered on the crown with a layer of ena- mel, and at the base with cement. The dentition iu the piesiosauri differs from that of the crocodiles, in the successional teeth emerging through distinct apertures on the inner side of the sockets of their predecessors, and not through the pulp cavity. The vertebra? are relatively longer than in ichthyosaurus, and their articular faces are either flat, or slightly excavated towards the periphery, with a gentle con-. 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 Bovell, James, 1817-1880. [Toronto? : s. n. ]
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Keywords: ., bookcentury1800, booksubjectnaturalh, booksubjectnaturaltheology
