. The later extinct floras of North America [microform]. Paleobotany; Paléobotanique. i â â : 'fl. 76 THE LATER EXTINCT FLORAS OF NORTH AMERICA. ⢠V ; -,'^^ . >^ QUERCUS LAURIFOLIA Newb â .;* ri;, v,v- ⢠"^ H. LIX, fig. 4; LX, fig. 3. -^y^^^ Pioc. U. S. Nat. Mus., Vol. V (March 21,1883), p. 505. "Leaves petioled, lanceolate, 6 inches in length by 1^ inches in width, equally narrowed to the point and petiole; marj^ins entire, or faintly toothed, or undulate; nervation regular; mic'iib strong, straight, lateral branches, about ten pairs, arching gently upward, terminating in the
. The later extinct floras of North America [microform]. Paleobotany; Paléobotanique. i â â : 'fl. 76 THE LATER EXTINCT FLORAS OF NORTH AMERICA. ⢠V ; -,'^^ . >^ QUERCUS LAURIFOLIA Newb â .;* ri;, v,v- ⢠"^ H. LIX, fig. 4; LX, fig. 3. -^y^^^ Pioc. U. S. Nat. Mus., Vol. V (March 21,1883), p. 505. "Leaves petioled, lanceolate, 6 inches in length by 1^ inches in width, equally narrowed to the point and petiole; marj^ins entire, or faintly toothed, or undulate; nervation regular; mic'iib strong, straight, lateral branches, about ten pairs, arching gently upward, terminating in the ; Collected by S. M. Rothhammer, on the expedition of Gen. Alfred Sully. Although reluctant to add one more to the large number of ill-defined species of oak which have been established upon the fossil leaves brought from the far west, this seems to be inevitable, inasmuch as the leaves before us are in all probability those of Quercus and distinct from any hitherto described. The most striking feature in these leaves is tneir elegant lanceo- late and symmetrical form, broadest in the middle and naiTowing regularly to the pointed base "nd summit. The craspedodrome nervation and the undulate or faintly toothed margins seem to separate these leaves from Laurus and connect them with the oaks. The figures given but imper- fectly represent the leaves in question, but it is hoped that the description will permit their identification when found. Formation and locality: Tertiary (Eocene I). Burned shales over lignite beds, Fort Berthold, Dakota. â V PAUCIDENTATA Newb. ' PI. XLIII, fig. 1. Proc. Nat. Mus., Vol. V (March iil, 1883), p. 505. "Leaves oblanceolate, 6 inches in length by 1J in breadth, narrowed tc the base, sometimes unsymmetrical, long-pointed, and acute at the summit; margins entire below, coarsely toothed above; nervation strong and regular, about ten branches on each side of the midrib, which curve upward, festooned balow, t
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