Geology and paleontology / by B.K. Emerson [and others].

Date:
[1910]
Catalogue details

Licence: In copyright

Credit: Geology and paleontology / by B.K. Emerson [and others]. Source: Wellcome Collection.

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    Corylus harrimani sp. nov. pi. XXIII, fig. I. Leaves of immense size, coriaceous in texture, broadly ovate or elliptical, heart-shaped at base; margin coarsely and irregularly den- tate; midrib very strong; secondaries about 9 pairs, very strong, mainly alternate, lowest pair nearly at a right angle, others at an angle of about 450, all craspedodrome and with several branches on the lower side which also end in marginal teeth; nervilles numerous, very strong, percurrent, at right angles to the secondaries; finer nervation producing large areolas. The specific name is given in honor of Mr. E. H. Harriman, the patron of the Expedition. This splendid species is represented by the nearly perfect example figured and by a few fragments. This specimen is rather elliptical- cordate in shape, being 20 cm. in length and about 17 cm. in width. It is well shown by the figure. That this leaf belongs to Corylus seems certain. It is much the same in appearance as certain leaves referred to C. macquarrii, but it is of nearly four times the size of the leaves of that species and more- over differs in certain details. In general appearance it perhaps ap- proaches closest to C. scottii Heer,1 from Spitzbergen, but it is twice as large and differs in shape. The marginal dentition is, however,, much the same. Corylus? palachei sp. nov. pi. xxii, fig. 2; pi. xxviii, fig. 1. Leaves in general of small size, coriaceous, ovate or ovate-oblong, truncate or very slightly heart-shaped at base, rather obtuse at apex; margin coarsely and unequally toothed, the teeth sharp and almost spiny pointed ; midrib strong, straight or slightly flexuose ; secondar- ies thin, 7 or 8 pairs, basal ones at a low angle, others at an angle of about 450, craspedodrome, often with two or three short branches which end in teeth ; nervilles numerous, mainly percurrent. The specific name is given in honor of Dr. Charles Palache, one of the geologists of the Expedition. This species is represented by a considerable number of specimens, all of which agree closely. They are about 5 cm. in length and 4 cm. in width. I am somewhat uncertain as to the genus to which these leaves should be referred. They appear to be the same as certain leaves from