Locality
From Hollick (1930) (p. 39)
"Yukon River, north bank, at Fossil Bluff, about 6 miles above Nahochatilton (original No. 2AC238); collected by A. J. Collier and Sidney Paige in 1902 (lot 2962) (pl. 1, fig. 10). Yukon River, north bank, about 6 miles above Nahochatilton (original No. 3AH16); collected by Arthur Hollick and Sidney Paige in 1903 (lot 3252) (pl. 1, fig. 11)."
Description
From Hollick (1930) (p. 39)
"Asplenium johnstrupi (Heer) Heer, Die Kreide-Flora cler arctischen Zone: Flora fossils arctica, vol. 3, No.2. p. 32, pl. 1, figs. 6, 6b, 7, 7b; pl. 10, figs. 6c, 6d; p. 122, pl. 35, figs. 1-5, 1874." (Heer 1874)
Sphenopteris (Asplenium?) johnstrupi Heer, Flora fossilis arctica, vol. 1, p. 78, pl. 43, fig. 7, 1868." (Heer 1868)
From Hollick (1930) (p. 39)
"These fragmentary and imperfectly preserved specimens are referred provisionally to Heer's species from the Kome beds of Greenland and Svalbard. The fragments figured by Heer include a wide variety of remains, some of which resemble our specimens closely - for example, his Figures 6 and 7 on Plate 1, and Figures 1 and 5 on Plate 35 of volume 3 - and
these appear to warrant at least a provisional reference of our specimens to the species."