. The Canadian journal ; a repertory of industry, science, and art ; and a record of the proceedings of the Canadian Institute. Fig. 6. JYorl. Development of the plates and pores of of Glt/ptoc^ditiis miUtipora. DeTclopment of the plates and pores of Sycocystiics (EchinOH^nerinites) angulosus, as drawn by Von Buch. —Quarterly Journal, Geographical Society, Vol. II., Plate 4. This beautiful little fossil is about one inch long, and five-eighths of an inch in its greatest diameter. Some of the specimens are larger, but these appear to be the average dimensions. The body is of an oblong and sligh
. The Canadian journal ; a repertory of industry, science, and art ; and a record of the proceedings of the Canadian Institute. Fig. 6. JYorl. Development of the plates and pores of of Glt/ptoc^ditiis miUtipora. DeTclopment of the plates and pores of Sycocystiics (EchinOH^nerinites) angulosus, as drawn by Von Buch. —Quarterly Journal, Geographical Society, Vol. II., Plate 4. This beautiful little fossil is about one inch long, and five-eighths of an inch in its greatest diameter. Some of the specimens are larger, but these appear to be the average dimensions. The body is of an oblong and slightly conical shape, most obtuse at the base. It is also obscurely five-sided, the arms being situated upon the angles. Its covering consists of a number of polyhedral plates, firmly united at their edges, and forming a strong calcareous shell, which, if fissured down from the top to the bottom, and unfolded on a plane surface, would present the arrangement seen in Fig 5. In the several other genera of Cystideans allied to this, the rows of plates extend in uninterrupted bands horizontally round the body, but here the second and third rows are broken through by the extension of the plates in the series below and above. In the basal series there are four plates resting upon the upper joint of the pedicle, one of them hexagonal, and three pentagonal. The hexagonal plate occupies the base on the posterior side, and supports that plate on which rests the ovarian aperture; and the * The side containing the large ovarian aperture may be considered as the posterior side of the animal, and consequently the right and left sides will correspond with the right and left hands of the observer, while the anterior side will be directly opposite or in front. pentagonal plate, immediately opposite on the front side of the fossil, is remarkable for being twice the height of the others. As allusion will be frequently made to it in the course of the follow- ing description, it is marked No. 1 in t
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Keywords: ., bookauthorcanadian, bookcentury1800, bookdecade1850, bookyear1852
