40

F37. Geol. Surv. Cat. No. 3492 é
Locality: on north face of mountain 24 miles south-southeast of Niven River
at longitude 127 degrees.

Ferns

Tapeinidium ? undulatum (Hall) Knowlton

Sphenopteris (Aneimia ?) stricta Newberry
Conifers

Elatocladus (Sequoia ?) subulata (Heer) Seward
Angiosperms

Menispermites reniformis Dawson

Pseudoprotophyllum dentatum Hollick

Laurophyllum plutonium (Heer) Seward
Age: See remarks below

The fossil plants from collections F34, F35, F36, and F37 are con-
sidered to indicate an Upper Cretaceous age. Cladophlebis frigida, Sphenop-
teris (Aneimia) stricta, Tapeinidium? undulatum, Pseudocycas unjiga,
Ficus ef. stephensoni, Elatocladus (Sequoia?) subulata, M enispermites
reniformis, Pseudoprotophyllum dentatum, and Laurophyllum plutonium
also occur in the Dunvegan formation of Alberta, which is considered to be
of Cenomanian age; and it is inferred that the age of the above collections
is probably Cenomanian (earliest Upper Cretaceous) or at most not later
than Turonian (early Upper Cretaceous).

F238.

Locality: east bank of Sustut River about 4 mile downstream from mouth
of Asitka River.

Remarks: this collection comprises a much broken specimen somewhat
doubtfully identified as an Artocarpus comparable to Artocarpus
cretacea Berry from the Ripley formation. Berry correlates the
Ripley with some part of the Upper Cretaceous, Montana group.

Age: Tentatively Upper Cretaceous

F39. Geol. Surv. Cat. No. 3483
Locality: 4 miles west of Mount Carruthers.
Conifers
Pseudocycas unjiga (Dawson)
Angiosperms
Trochodendroides rhomboides? (Lesquereux) Berry
Classification uncertain
Krannera marginata (Heer) Seward
Age: not older than Albian nor younger than Cenomanian, ie., late Lower
Cretaceous or early Upper Cretaceous

The following were collected from the dacitic tuffs of the upper
division:
F40. Geol. Surv. Cat. No. 3489
Locality: 14 miles northwest of the mouth of Niven River.
Conifers
Sequoia langsdorfii (Brongniart) Heer
Angiosperms
Laurophyllum, perhaps Oreodaphne mussissippiense Berry
Age: probably Paleocene