. Bulletin of the Buffalo Society of Natural Sciences. Natural history -- New York (State); Natural history. (Fig. 84.) (Pal. Distinguishing Characters. — Sub-circu- lar or oblate outline; greater transverse diameter; convex brachial valve, with apex near the margin; Hat or concave pedicle valve with large oval pedicle groove; and Hue concentric striae, with ;. bs orhir,,!,,,,!,,, occasionally coarser wrinkles. dona. Several attached shellscfromHull). Found in the middle Moscow (Orbicu- loidea ) bed. al Sections 4 and 5. ORBICULOIDEA lodiensis. Vanuxem. \. Vol. p. -2-2. PI. II.) Di
. Bulletin of the Buffalo Society of Natural Sciences. Natural history -- New York (State); Natural history. (Fig. 84.) (Pal. Distinguishing Characters. — Sub-circu- lar or oblate outline; greater transverse diameter; convex brachial valve, with apex near the margin; Hat or concave pedicle valve with large oval pedicle groove; and Hue concentric striae, with ;. bs orhir,,!,,,,!,,, occasionally coarser wrinkles. dona. Several attached shellscfromHull). Found in the middle Moscow (Orbicu- loidea ) bed. al Sections 4 and 5. ORBICULOIDEA lodiensis. Vanuxem. \. Vol. p. -2-2. PI. II.) Distinguishing ('haracters —-Broadly oval-ovate outline : narrower posterior end; low brachial valve, with minute eccentric apex: linear pedicle groove extending more than half way from apex to margin in pedicle valve: concentric stria*.and faintradiat- ing folds or undulations on the anterior half of the shell. Found in the Demissa bed, at Section 5; the Pleurodictyum bed, at Wanakah Cliff; the Nautilus bed, in Avery's Ravine. It is rare in all. Measurements: mm. by 5 mm. in length and Flo. 84. Orbicu- loidea lodiensis. Brachial valve, Demissa bed, x 2%. (Original/) Genus SCHIZOBOLUS. Ulrich. [Ety. : Schiza, a cleft ; obobix, a genus.] (1886: Contributions \ American Palaeontology, Vol. I., p. 25, PI. III. Pal. X. Vol. Pt. I., p. 87.) Shell oval, valves slightly unequal, 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 brachial valve without the scars, but with thickened bund just within posterior margin. SCHIZOBOLl s TRUNCATUB. Hall. ( Fig. 85. I ( Discina tl'UIl- cata. Ball. Pal. X. V., Vol. p. 2:\. Pis. I. and II.) Distinguishing Characters.— Abruptly rounded or trun- cate posterior margin; apices of both valves near posterior. Please note that these images are extracted from scanned page
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