. Annals of the New York Academy of Sciences. Science; Science -- New York (State). North Amer'ican Palseozoic Crustacea. 11 tumifrons, Hall & Whitfield, 1875 ; Pal. Ohio, vol. 2, p. 102, pi. 4, fig. 8. tumifrons. Miller, 1874 ; Cincinnati Quart. .Jour. Sci., vol. 1, p. 119. venusta, Billings, 1866 ; Catalogue Sil. Foss. Anticosti, p. 68. Carbonia, Jones & Kirby, 1879 ; Annals & Mag. Nat. Hist., 5th series, London, vol. 4, p. 28. Diagnosis.—Subovate or elongate in outline, with the dorsal margin rounded and the ventral margin nearly straight; valves convex, the right rather the lar
. Annals of the New York Academy of Sciences. Science; Science -- New York (State). North Amer'ican Palseozoic Crustacea. 11 tumifrons, Hall & Whitfield, 1875 ; Pal. Ohio, vol. 2, p. 102, pi. 4, fig. 8. tumifrons. Miller, 1874 ; Cincinnati Quart. .Jour. Sci., vol. 1, p. 119. venusta, Billings, 1866 ; Catalogue Sil. Foss. Anticosti, p. 68. Carbonia, Jones & Kirby, 1879 ; Annals & Mag. Nat. Hist., 5th series, London, vol. 4, p. 28. Diagnosis.—Subovate or elongate in outline, with the dorsal margin rounded and the ventral margin nearly straight; valves convex, the right rather the larger and overlapping the left ventrally; hinge simple ; muscle-spot circular ; surface smooth, sometimes pitted. ? Bairdioides (?), Jones & Kirkby, 1884; Geol. Mag., 5th series, London, vol. 1, p. 358, pi. 12, figs. 8a-d. Carboniferous. Bairdia sp. ? Dawson, 1868 ; Acadian Geology, p. 206, fig. 48 a? Cythere? (Carbonia), Bairdioides, Jones & Kirkby, 1879; Annals & Mag. Nat. Hist., 5th series, London, vol. 4, p. 38, pi. 3, figs. 24, 27. Carbonia? Bairdoides ? Jones & Kirkby, 1884; Geol. Mag., Dec. 3, p. 358, pi. 12, figs. 8a-d. ?elongata, Jones & Kirkby, 1884; Annals & Mag. Nat. Hist., 5th series, London, vol. 1, p. 361, pi. 12, fig. 10. Carboniferous. ? elongata, Jones & Kirkby, 1884; Geol. Mag., Dec. 3, p. 361, pi. 12, fig. 10. fabulina, Jones & Kirkby, 1879; Annals & Mag. Nat. Hist., 5th series, London, vol. 4, p. 31, pi. 2, figs. 1-9 ; and var. humilis, id., figs. 11-14. fabulina, Jones, 1889 ; Geol. Mag., Dec. 3, vol. 6, p. 270, figs. 1-4. Cyiherella injlata, Dawson, 1868; Acadian Geology, p. 206, fig. 48 b. fabulina, Jones & Kirkby, 1884; Geol. Mag., Dec. 3, vol. 1, p. 358, pi. 12, figs. 9 a-e. Ceratiocaris, McCoy, 1849 ; Annals & Mag. Nat. Hist., London, vol. 4, p. 412. Gen. Cliar.—Carapace bivalve, the dorsal line simply angulated (?undivided), with a slight furrow be- neath it on each side ; sides semielliptical, much elong
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