. 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. AQUATIC ANIMALS OF THE COAL. 205 beaks more central, than No. 1. It occurs in a bed of shale at the base of the Middle Coal series at the Joggins. (4.) NaiacUtes arenacea (Dn.)—Fig. 45.—Elliptical; twice as long as wide; beaks prominent, one-fourth from anterior end, which is
. 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. AQUATIC ANIMALS OF THE COAL. 205 beaks more central, than No. 1. It occurs in a bed of shale at the base of the Middle Coal series at the Joggins. (4.) NaiacUtes arenacea (Dn.)—Fig. 45.—Elliptical; twice as long as wide; beaks prominent, one-fourth from anterior end, which is compressed and rounded. In the Upper Coal formation at Pictou. (5.) Naiadites ovalis (Dn.)—Similar in general foi-m to No. 4, but much broader in proportion. See paper above cited, Fig. 24. It occurs in bituminous limestone, with cyprids, in the lower part of the Joggins Coal measures. (6.) Naiadites angulata (Dn.)—Fig. 46.—Similar in general fonn and proportions to No. 4, but with more prominent beaks, a straight hinge-line, and an undefined ridge ninning backward from the umbo, and causing the posterior extremity to present an angular outline. Lower Coal formation at Parrsborough. (7.) N. ohtusa (Dn.)—As large as N. carbonaria, but remarkable for the broad and truncated form of its anterior end, giving it an approach to a quadrangular form. It is thin, and much marked by growth lines. Lower Coal measures, M'Lellan's Brook, Pictou. II. Spij'orbis carlonarius.—Fig. 47.—This little shell, which I de- scribed as a Spiroi^bis as long ago as 1845,* is apparently not specifi- cally distinct from Microconchus carbonarius of the British Coal-fields. Fig. 47. —Spirorhis carhonarius ; nat. size attached to Cordaites, and Its microscopic structure is identical with that of modern Spirorbes, and shows that it is a true Avorm-shell. It is found throughout the Coal formation, attached to plants and to shells of Naiadites, and must have been an inhabitant of enc
Size: 2103px × 1189px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthordawsonjohnwilliamsir1, bookcentury1800, bookdecade1870
