. Acadian geology : the geological structure, organic remains, and mineral resources of Nova Scotia, New Brunswick, and Prince Edward Island. Geology -- New Brunswick; Geology -- Nova Scotia; Geology -- Prince Edward Island; Paleontology -- New Brunswick; Paleontology -- Nova Scotia; Paleontology -- Prince Edward Island. 378 THE CARBONIFEROUS SYSTEM. similar to that in the last species. No doubt a more perfect specimen would show many points of difference between these species, not now appreciable; but in the meantime the very different form of the teeth is a sufficient distinction. In H. Lyel
. Acadian geology : the geological structure, organic remains, and mineral resources of Nova Scotia, New Brunswick, and Prince Edward Island. Geology -- New Brunswick; Geology -- Nova Scotia; Geology -- Prince Edward Island; Paleontology -- New Brunswick; Paleontology -- Nova Scotia; Paleontology -- Prince Edward Island. 378 THE CARBONIFEROUS SYSTEM. similar to that in the last species. No doubt a more perfect specimen would show many points of difference between these species, not now appreciable; but in the meantime the very different form of the teeth is a sufficient distinction. In H. Lyelli these are conical and pointed. In the present species they are of a peculiar wedge shape—their diameter transversely to the jaw being the greatest at the base, while at the top they are sharpened to an edge. The peculiar fonn of the intermaxillary teeth may also serve as a distinctive character, though those of H. Lyelli are not yet known. The form of the vertebrae would further seem to indicate different proportions of body. On the whole, while this species is in all probability generically related to the last, it is certainly specifically distinct. Its habits and food may have been similar, but its dental apparatus was stronger and more formidable. Hylonomus Wymani, Dawson. This is the species of Hylonomus originally detected by Professor AVyman in the specimens brought from the Joggins by Sir C. LyeU and myself. Remains of several additional individuals have since been found, but no skeleton approaching to completeness. I shall describe this, the most diminutive of the reptiles of the Nova Scotia coal, with the aid of the fragments represented in Fig. 146, most which are almost microscopic in size. Fig. 146.—Hylonomus Wymani, (a) Mandible and masiUa; nat. size. (/) Bones of limb and pelvis; nat. size and mag. (J, c, d) Portions of the same; magnified. (g) Bones of foot; enlarged, (e) Rib; nat. size and magnified. (A) Scales; enlarged. (i) Vertebrae; nat. size
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Keywords: ., bookauthordawsonjohnwilliamsir1, bookcentury1800, bookdecade1870
