. Bulletin of the Buffalo Society of Natural Sciences. Natural history; Science. 202 Found in the lower Moscow shale, at Sections 4 and 5 (common); p]ncrin;d limestone, at Section 5 (rare); between the Ti-ilobite and Strophalosia beds, in Avery's Creek, and on the Lake Shore (rare). Chonetes setkjerus. (Hall.) (Fi,o\ 1(J7.) (J'al. X. Y., Vol. IV.,]). 129, IM. XXI.) Jh'stin_ii-nis]jinL> Characters. — Sfnii-elliptic;d outline; moderate convexity ; moderate num- ber of rounded surface stria? and vertical seMger]^' Yenu-&\ Cardinal spiues, of which three occur on each ,fromHalI,. ^-
. Bulletin of the Buffalo Society of Natural Sciences. Natural history; Science. 202 Found in the lower Moscow shale, at Sections 4 and 5 (common); p]ncrin;d limestone, at Section 5 (rare); between the Ti-ilobite and Strophalosia beds, in Avery's Creek, and on the Lake Shore (rare). Chonetes setkjerus. (Hall.) (Fi,o\ 1(J7.) (J'al. X. Y., Vol. IV.,]). 129, IM. XXI.) Jh'stin_ii-nis]jinL> Characters. — Sfnii-elliptic;d outline; moderate convexity ; moderate num- ber of rounded surface stria? and vertical seMger]^' Yenu-&\ Cardinal spiues, of which three occur on each ,fromHalI,. ^-^^ ^^. ^he beak. Found in the Hamilton shales, at Section G, two to three feet below the Fncrinal limestone (vei-y rare); seventeen to twenty-one feet below the Encrinal, at Section 7 (rare); Pleurodictyum beds,in Avery's Creek (occasionally); Transi- tion shales and Marcellus shales, in Lake Shore Cliffs (not very common). scm-Lrs. Hall. (Fio. (Pal. X. Y., Vol. IV., p. 130, n. XXI.) Distinguishing C/iararfe/N.—Semi-oval outline; somewhat gibbous character; numerous surface stride; nnmerouscardi- nal spines (as many as twelve or fourteen being sometimes. Fig. 108. Chonetes scihdus. Ventral fpedicle) and dorsal (braehiaU views of a speci- men, natural size ; interior of pedicle and of brachial valves, enlarged (from Hall). indicated), which pass ol)li(juely outward; interior of bra- chial valve strongly pustulose, with a broad depression along the center, from which rises a slender median ridge; a similar median ridge occurs in the interior of the pedicle valve. Found in the lower two feet of the Moscow shales, at Sec- tions 4 and 5 (rare); in the Encrinal limestone (rare); throughout the Lower (Hamilton) shales, at Sections 5,6, 7, <S, and on the Lake Shore, and in Avery's Creek (often abun- dant); Transition shales, on the Lake Shore (rare).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for re
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