. The geology of Nova Scotia, New Brunswick, and Prince Edward Island, or, Acadian geology [microform]. Geology; Geology, Stratigraphic; Paleontology; Geology, Economic; Géologie; Géologie stratigraphique; Paléontologie; Géologie économique. J I 608 THE UPPEa I i' '-v lose. The specimens are not sufficient to make any satisfactory determinations regarding specific differences. Arisaig, East Kiver. Daltnania Logani, Hall (Fig. 215). The specimens are two or three imperfect cephalic shields, one preserving the palpebral lobes, and others consisting principally of the glabella, with tw
. The geology of Nova Scotia, New Brunswick, and Prince Edward Island, or, Acadian geology [microform]. Geology; Geology, Stratigraphic; Paleontology; Geology, Economic; Géologie; Géologie stratigraphique; Paléontologie; Géologie économique. J I 608 THE UPPEa I i' '-v lose. The specimens are not sufficient to make any satisfactory determinations regarding specific differences. Arisaig, East Kiver. Daltnania Logani, Hall (Fig. 215). The specimens are two or three imperfect cephalic shields, one preserving the palpebral lobes, and others consisting principally of the glabella, with two or three parts of caudal shields. There is a fragment of a cheek which may be of this species. Cephalic shield somewhat semicircular. Glabella ovate, wider in front and truncate behind, depressed convex ; occipital ring narrow, prominent; occipital furrow bending a little forward in the middle, and curving gently backward in the middle of each side, and again turning forward; posterior furrows narrow and sharply impressed, each one extending about one-third across the glabella and curving forward at their outer extremities; central furrow linear, obscure, having a direction transverse to the axis; anterior furrow obscure; oblique to the axis, linear extending to the margin of the glabella a little forward of the eye; frontal lobe regularly rounded anteriorly. A fragment of a cheek in the same association is broad, produced posteriorly in a short strong spine, and marked by a broad sub-marginal groove. Caudal shield somewhat semi-elliptical, convex, acute behind, axis very prominent, rounded and marked by about eight annulations, which are gently curved backward at the extremi- ties ; lateral lobes with six simple flattened ribs which terminate in a thickened border, and separated from the axis by a strongly defined furrow; extremity abruptly pointed. The glabella of this species more nearly resembles Phacops in the general form and faintly impressed furrows, of which the
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Keywords: ., boo, bookcentury1800, booksubjectgeology, booksubjectpaleontology
