. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. —Waldheinila australis. Dorsal valve' ^, cardinal process; f, dental sockets; p, hinge plate : «, septum: o, crura of the loop: {, re- tlected portion of the loop; ?», quadruple adductor impression. Ventral valve; /, fora- men; d, deltidiumj; t, teeth; a, single adductor impression; r, cardinal muscle; z, accessory muscles; p, pedicle muscles ; v, position of tlie vent; 2, attachment of pedicle sheatli. co
. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. —Waldheinila australis. Dorsal valve' ^, cardinal process; f, dental sockets; p, hinge plate : «, septum: o, crura of the loop: {, re- tlected portion of the loop; ?», quadruple adductor impression. Ventral valve; /, fora- men; d, deltidiumj; t, teeth; a, single adductor impression; r, cardinal muscle; z, accessory muscles; p, pedicle muscles ; v, position of tlie vent; 2, attachment of pedicle sheatli. compacta, White & St. John, 1868, Trans. Chi. Acad. Sci., p. 119, Up. Coal Meas. deweyi, see Ketzia deweyi. formosa, see Retzia formosa. globosa, see Tramatospira globosa. rectirostra, see Trematospira rectirostra. Whitfieldia, Davidson, 1881, Lond. Geo. Mag., vol. 8, p. 289. [Ety. proper name.] While Meris- tella is distinguished from Merista by having no shoe-lifter process; Whitfieldia is dis- tinguished from both by the absence of those peculiar ring-shaped processes attached to the loop, and has instead only a short, bifurcating process, where in Merista and Meristella the rings are formed. These internal differences in the spirals seem to distinguish the genera. Type W. Fig. 638.—Wald heimia aus' trails. maria. Hall, 1863, (Meristella maria,) Trans Alb. Inst., vol. 4, p. 212, Niagara Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Miller, S. A. (Samuel Almond), 1836-1897. Cincinnati : [s. n. ]
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Keywords: ., boo, bookcentury1800, booksubjectgeology, booksubjectpaleontology
