. The later extinct floras of North America [microform]. Paleobotany; Paléobotanique. :'i'-»W^. 1 118 THE LATER EXTINCT FLORAS OF NORTH AMERICA. nerves, terminating all in the margins, form a character which the Laurels never have. Of described species it most resembles Weber's R. Decheni (Palaeontogr. Vol. II, p. 204 [90], PI. XXIII [VI], fig. 2), but differs from it in having an ovate, lanceolate ft>rin, and the nervation is a little more crowded. Formation and locality: Cretaceous (Larajnie group). Belmont, Colorado. Khamnus Eridani Ung. PI. XLVIH, fig. 7 Gen. et fSp., PI. Foss. (1850),
. The later extinct floras of North America [microform]. Paleobotany; Paléobotanique. :'i'-»W^. 1 118 THE LATER EXTINCT FLORAS OF NORTH AMERICA. nerves, terminating all in the margins, form a character which the Laurels never have. Of described species it most resembles Weber's R. Decheni (Palaeontogr. Vol. II, p. 204 [90], PI. XXIII [VI], fig. 2), but differs from it in having an ovate, lanceolate ft>rin, and the nervation is a little more crowded. Formation and locality: Cretaceous (Larajnie group). Belmont, Colorado. Khamnus Eridani Ung. PI. XLVIH, fig. 7 Gen. et fSp., PI. Foss. (1850), p. 466. The Ififtf repi'esented in fig. 7 is unique in the collection made at Bridge Creek, Oreg<'r., but though imperfect it is very distinctly marked, and apparently belongs to the genus Rhamnus, and so closely resembles some of the figures of Rhamnus Eridani Ung., especially that described in Fl. Foss. Arct, Vol. I, p. 123, PI. XLIX, fig. 10, that I have not felt justified in regarding them as distinct. Formation and locality: Tertiary (Miocene). Bridge Creek, Oregon. Rhamnites concinnus Newb. , ,. PL XXXIII, flgs. 7 (8?).' Ann. N. Y. Nat. Hist., Vol IX (April, 1868), p. 50; Ills. Cret. and Tert. PL (1878), PI. XVI, figs. 7, 9 (fig. 0 imder Viburnum asperum). "Leaves petioled, long ovate, acute, rounded at the base, coarsely and nearly equally mucronate-dentate; nervation pinnate, remarkably precise and parallel throughout; medial nerve straight; lateral nerves, nine to ten pairs, diverging at an angle of about 20 degrees, slightly arched U2)ward, parallel among themselves, basilar pair reaching to margin below the mid- dle of the leaf, sending off each about eight short, simple, slightly curved, parallel branches to the dentations of the baso-lateral margin; sui-Orior lateral nerves simple, or once-forked at the summit; tertiary nerves very numerous, simple, parallel, connecting the lateral secondary nerves and the branches of the basilar nerves nearly at right an
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