. Bulletin of the Buffalo Society of Natural Sciences. Natural history; Science. 235 dowinvar(l to fill the sinuosity in the front of the pedicle valve; fine concentric surface stria- and almost obsolete faint radiating striae. Fonnd in the npper layers of the Encrinal limestone, at Section 5, in Eighteen Mile Creek (rather common). Gi:xus TRIGERIA. Bayle. (1875: Explic. Carte Geol. de France, Atlas, PI. XIII. 1898: Pal. N. Y., Vol. VIII., Pt. II., p. 273.) "Plicated centronellids with plano-convex valves. In the ])rachial valve the hinge plate is tri])artite, the median division being pe
. Bulletin of the Buffalo Society of Natural Sciences. Natural history; Science. 235 dowinvar(l to fill the sinuosity in the front of the pedicle valve; fine concentric surface stria- and almost obsolete faint radiating striae. Fonnd in the npper layers of the Encrinal limestone, at Section 5, in Eighteen Mile Creek (rather common). Gi:xus TRIGERIA. Bayle. (1875: Explic. Carte Geol. de France, Atlas, PI. XIII. 1898: Pal. N. Y., Vol. VIII., Pt. II., p. 273.) "Plicated centronellids with plano-convex valves. In the ])rachial valve the hinge plate is tri])artite, the median division being perforated by a visceral foramen. Brachidium as in Centronella, though with a snmller anterior i); (Hall and Clarke. Hand-book Brach., Bt. H., p. 108.) Trigeria (?) LEPiDA. Hall. (Fig. 14GA.) (Pal. N. Y., Vol. lY., p. 27G, PI. XLY.) Distinguishiuti; Character><.— ^m?i\\ size; sub-equally con- vex valves: much elevated beak of i)edicle valve; elongate ''^ili'^ii^. Fig. 146A. Trigeria lepida. Ventral view of a specimen, natural size. Dorsal, ven- tral, and profile views of a specimen, enlarged, x 2. Dorsal view of an individual with unusually strongly marked sinus (from Hall). oval opening, communicating with foramen above, and fianked below by two convex deltidial plates; simple regular surface plications, gradually enlarging towards the margins of the valves; shallow sinus on brachial valve, formed l)y depression of two or three central plications. Genus CRYPTONELLA. Hall. [Ety. : Signifying a small cavity.] (1861: 14th Annual Rep't, X. Y. State Cab. Nat. Hist., p. 102. 1893: Pal. X. Y., Vol. VIII., Pt. II., p. 286.) Shell terebratuloid, with the valves of somewhat similar convexity. Beak of pedicle valve erect or slightly inctu'ved. 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 Soc
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