. Acadian geology [microform] : the geological structure, organic remains and mineral resources of Nova Scotia, New Brunswick and Prince Edward Island. Geology; Paleontology; Geology; Geology; Geologie; Paléontologie; Géologie; Géologie. |en, for Tctablo Icating lare so |of the ,'them, tcallcd Komo Ipecics they AQUATIC ANIMALS OF THE COAL, 203 arc allied to Unionidce^ and that their nearest analogue may be tlie genus Bysso-anodtynta of D'Orbigny, found in the Klvcr Parana.* Mr Salter, however, to whom I oent specimens, regards these shells as belonging to his new genera Anthracoinya and Anthra
. Acadian geology [microform] : the geological structure, organic remains and mineral resources of Nova Scotia, New Brunswick and Prince Edward Island. Geology; Paleontology; Geology; Geology; Geologie; Paléontologie; Géologie; Géologie. |en, for Tctablo Icating lare so |of the ,'them, tcallcd Komo Ipecics they AQUATIC ANIMALS OF THE COAL, 203 arc allied to Unionidce^ and that their nearest analogue may be tlie genus Bysso-anodtynta of D'Orbigny, found in the Klvcr Parana.* Mr Salter, however, to whom I oent specimens, regards these shells as belonging to his new genera Anthracoinya and Anthracoptera, the former being supposed to be allied to Myadce.\ More recently Giunbel and Clciuitz have described similar shells from Thuringia as belonging to the genera Unlo and Anodon, and regard my Xaiaditen carbonarius {Anthracoptera carbonaria of Salter) as a Dreissena.\ In the present uncertainty as to their genuine relations, I shall retain the name Naiadites for the whole of the species, giving, however, Salter's generic names in brackets. The genus Anthracosia of King, which is evidently distinct from Naiadites, has been recognised in Nova Scotia only in the Lower Coal formation of Baddeck, C. J3. A specimen found at that place by Mr Barnes will be noticed in the sequel. As these shells swarmed in the waters of the Coal formation estuaries or lagoons, facts tending to the elucidation of their habits and affinities are important with reference to the coal; I would there- fore make the following remarks in relation to them:— (1.) Under the microscope, the shells of the thicker species, as Naiadites carbonarius, present an internal lamellar and subnacreous layer, a thin layer of vertical prismatic shell, and an epidermis—these structures being entirely similar to those of Unionidce. In the thinner species, as in N. lavis, only the prismatic coat appears, and in this the prisms are in some instances placed obliquely. These thin shells, however, show evidence of iin epi
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Keywords: ., boo, bookcentury1800, booksubjectgeology, booksubjectpaleontology
