Locality
From Hollick (1930) (p. 107-108)
"Coal mine in Coal Bluff, Herendeen Bay, Alaska Peninsula (original No. 31); collected by W. W. Atwood and H. M. Eakin in 1908 (lot 5185)."
Description
From Hollick (1930) (p. 107-108)
"Leaf oval or oblong, entire, rounded below to a cordate base; nervation simply pinnate, camptodrome; secondary nerves diverging from the base of the midrib at right angles, the upper nerves diverging at successively decreasing angles, ascending, branched toward the extremities on the under sides; tertiary nervation at right angles to the secondaries throughout, lightly bent outward or upward, simple in the basal part of the leaf, occasionally branched or forked above."
From Hollick (1930) (p. 107-108)
"This leaf is different from all other described Cretaceous species of the genus, but it has a more or less close resemblance to Apeibopsis deloesi (Gaudin) Heer (1859) (p. 41, pl. 109, figs. 9 - 11 [Pterospermum deloesi Gaudin, Soc. vaud. sci. nat. Bull., vol. 4, p. 425, 1885]) from the Miocene of Switzerland. It differs, however, in the closer approximation of the lower four or five secondary nerves and the distinct branching of the upper secondaries toward their extremities.
The specific name is given in honor of Mr. W. W. Atwood, by whose party the material containing the specimen was collected."