. 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. 380 THE CARBONIFEROUS SYSTEM. Hylerpeton Dawsoni, Owen. In the more or less laminated material which fills the interior ot the erect trees of the Joggins, it often happens that the more distinctly- separable surfaces are stained with ferruginous or coaly matter, or with fine c
. 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. 380 THE CARBONIFEROUS SYSTEM. Hylerpeton Dawsoni, Owen. In the more or less laminated material which fills the interior ot the erect trees of the Joggins, it often happens that the more distinctly- separable surfaces are stained with ferruginous or coaly matter, or with fine clay, so that the fossils which occur on these surfaces, and which would otherwise be more available than those in more compact material, are rendered so obscure as readily to escape observation. This was unfortunately the case with one of the most interesting specimens contained in the last of these trees which I had an oppor- tunity to examine. It consisted of the detached bones of a reptile scattered over a surface so blurred and stained that they escaped my notice until most of them were lost; and I was able to secure only a jaw bone and fragments of the skull, with a few of the other bones. On these fragments Professor Owen founded the genus Hylerpeton and the species named at the head of this article. His description is as follows (Fig. 147) :— Fig. 147. Hylerpeton Dawsoni, (a) Mandible and portion of cranial bone; nat. size. (b) Fragment of maxilla, showing larger and smaller teeth. (c) Tooth enlarged, showing pulp cavity. (d) Section of tooth; magnified. "This specimen consists of the left ramus of a lower jaw, which has been dislocated from the crushed head, of which the fore end of the left premaxillary is preserved, terminating near the middle of the series of the teeth of the more advanced mandible. A fragment of the left maxillary, which has been separated from the premaxillaiy, overlaps the hinder mandibular teeth. The fore part of the mandible is wan
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