. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. mir 338 BRACHIOPODA. [BIl,.âCAM. nate some distance from their origin; two brachial elevations under the ad- ductor move toward the center of the valve. Type A. wangenheimi. guadulupensis, Hhumard, 1858, Trans. St. Louis Acad. Sci., vol. 1, p. 292, Per- mian Or. spondyliformis. White & St. John, 1868, Trans. Chi. Acad. Sci., p. 118, Up. Coal. Meas. Billingiia, Ford, 1885. The name being preoccupied, see Elk
. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. mir 338 BRACHIOPODA. [BIl,.âCAM. nate some distance from their origin; two brachial elevations under the ad- ductor move toward the center of the valve. Type A. wangenheimi. guadulupensis, Hhumard, 1858, Trans. St. Louis Acad. Sci., vol. 1, p. 292, Per- mian Or. spondyliformis. White & St. John, 1868, Trans. Chi. Acad. Sci., p. 118, Up. Coal. Meas. Billingiia, Ford, 1885. The name being preoccupied, see Elkania. Brachymerus, Shaler. The name was pre- occupied for a genus of Coleoptera. See Anastrophia. Brachypriim, Shaler, syn. for Strophomena. geniculatum, see Strophomena geniculata. leda, Hee Strophomena leda. ventricomm, see Strophomena ventricosa. , Billings, August, 1858, Can. Nat. and Geol., vol. 4, p. 301. [Ety. kamara, arching chamber; ellua, dimin- utive.] Shell ovate or subcircular, beaks small, hinge-line short; mesial fold and sinus becoming obsolete in the middle part of the shell, below vhich the ra- diating stride are more or less numerous, while above concentric striae occur. Type C. volborthi. i- : â. Fig. 54/).âCamarella hemlpllcata. Dorsal, veu- tral, and side views. ,) ambigua, Hall, 1847, (Atrypa ambigua. Pal. N. Y., vol. 1, p. 143, Trenton Gr. antiquata, Billings, 1861, Pal. Foss., vol. 1, p. 10, Georgia Gr. bisulcata, Emmons, 1842, (Orthis bisul- cata.) Geo. Rep. N. Y., p. 395, and Pal. N. Y*, vol. 1, p. 139, Trenton Gr. breviplicata, Billings, 1865, Pal. Foss., vol. 1, p. 304, Quebec Gr. calcifera, Billings, 1861, Can. Nat. and GeO., vol. 6, p. 318, Calcif. Gr. circulus, Hall, 1847, (Atrypa circulus,) Pal. N. Y., vol. 1, p. 142, Trenton Gr. congesta, see Triplesia congesta. costata, Billings, 1865, Pal. Foss., vol. 1, p. 305, Quebec Gr. cui>pidala, see ^riplesia cusjjidata. extans, see Tilplesia extans. hemiplicata. Hall, 1847, Atrypa
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