Locality
From Hollick (1930) (p. 67-68)
"Yukon River, north bank, at Pickart's mine (original No. 26); collected by W. W. Atwood and H. M. Eakin in 1907 (lot 4638) (pl. 35, fig. 5). Yukon River, north bank, about 5 miles above Louden station [Nahochatilton] (original No. 22); collected by W. W. Atwood and H. M. Eakinin 1907 (lot 4635) (pl. 35, fig. 6)."
Description
From Hollick (1930) (p. 67-68)
"Juglans arctica Heer, Die fossile Flora Gronlands, erster Theil: Flora fossilis arctica, vol. 6; pt. 2, p. 71, pl. 40, fig. 2; pl. 41, fig. 4c; pl. 42, figs. la, 1b, 2a, 2b, 3; pl. 43, fig. 3, 1882." (Heer 1882)
Remarks
From Hollick (1930) (p. 67-68)
"A considerable variety of leaf forms have been included in this species by Heer and subsequent writers; in fact, Heer's Figure 2; Plate 40, which under the generally accepted rules of nomenclature may be taken as the specific type, differs so widely from the figures that follow that these might be considered specifically distinct.
In one or another of its forms the species has been recognized in the Dakota sandstone of Kansas by Lesquereux (1892) (p. 68, pl. 19, fig. 3; pl. 39, fig. 5); in the Raritan formation of New Jersey by Newberry (1895 [1896]) (p. 62, pl. 20, fig. 2); in the Magothy formation of Staten Island and Long Island; N. Y., Block Island, R. I., and Marthas Vineyard, Mass., by Hollick (1906; 1912) (p. 54, pl. 9, figs. 6 - 8; p. 157, pl. 164, figs. 3 - 4); and in the Tuscaloosa and allied formations of Alabama, Georgia, South Carolina, and North Carolina by Berry (1914; 1919) (p. 30, pl. 8, figs. 1, 2; p. 73)."