. Bulletin of the Buffalo Society of Natural Sciences. Natural history; Science. 184 I>istin^u;uisliiui-oadly oval-ovate ontline; narrower posterior end; low brachial \alve, with minnte eccentric ajjcx ; linear j^edicle groove extending more than half way from apex to margin in ])edicle valve; concentric stri<e, and faint radiat- ing folds or nndnlations on the anterior half of Fig. 84. Orbicu- tllC sliell. loidea lodiensis. i i n ⢠Brachial valve, Foniid \\\ tiic Dcmissa bed, at Section 5; the Demissa bed, x ' â 2%. toriginai.) Plenrodictvnm bed. at Wanakah Cliff; the Nantilns bed, in
. Bulletin of the Buffalo Society of Natural Sciences. Natural history; Science. 184 I>istin^u;uisliiui-oadly oval-ovate ontline; narrower posterior end; low brachial \alve, with minnte eccentric ajjcx ; linear j^edicle groove extending more than half way from apex to margin in ])edicle valve; concentric stri<e, and faint radiat- ing folds or nndnlations on the anterior half of Fig. 84. Orbicu- tllC sliell. loidea lodiensis. i i n ⢠Brachial valve, Foniid \\\ tiic Dcmissa bed, at Section 5; the Demissa bed, x ' â 2%. toriginai.) Plenrodictvnm bed. at Wanakah Cliff; the Nantilns bed, in Avery's Ravine. It is rare in all. Measurements: G mm. b}' 5 mm. in length and Gems SC^HIZOBOLUS. Ulrkh. [Ety. : Schtza, a cleft ; oholxs, a geuus.] (1886: Contributions to American Palaeontology, Vol. I., p. 23, Pi. III. Pal. N. Y., Vol. YIII., Pt. L, p. 87.) Shell oval, valves slightly iine(jnal, margins thickened; pedicle valve with a notch in the posterior margin; shell substance largely corneous. Muscular callosities of pedicle valve on each side of a median ridge with narrow curved lateral scars, bi-achial valve without tlie scars, but with thickened band just within posterior margin. ScHizoBOUS TRUNCATrs. Hall. ( Fig. 85.) (Discina trun- cata. Hall. Pal. X. Y., Vol. p. 23. I^ls. I. and II.) Distinguishing Characters.âAbruptly rounded or trun- cate posterior margin ; ajnces of both valves near posterior. 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 Buffalo Society of Natural Sciences. Buffalo, N. Y. : Buffalo Society of Natural Sciences
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