of
Sample: Sample No. 68APs9D -- USGS No. Mesozoic loc. M5102
Locality: Field No. 68APs9D
Description: Clams in calc. sltst. and silty ss. (float).
Location: Alaska Quadrangle: Yakutat D-4
Township&Range: T25S R36E Section: SW1/4 sec. 7
Reference
Title: Report on Referred Fossils ,  1969 (06/12)
This report covers the most extensive collection of fossils yet recorvered from the Yakutat Group of southern Alaska. Unfortunately, most of the fossils are either poorly preserved, belong to undescribed forms, occur in dislocated blocks, or are otherwise undiagnostic as to age. This is particularly true of the numerous clams from locs. M5102, M5104, and M5105. Warren Addicott and I have thrashed with thses specimens for a considerable time, and now tentatively believe that they are Mesozoic, probably Cretaceous, and perhaps nonmarine. The scrap of I. cf. I. schmidti from loc. M5108 is a notable discovery, which, if in place and further confirmed by additional collections, will substantiate a Late Cretaceous (Campanian) age for part of the Yakutat Group.
Report by: David L. Jones
Referred by: George Plafker
Age: Cretaceous (?Cretaceous)
Formation: Yakutat Group
Occurrence(s)
No. Group Name Qty Notes
1 Bivalves Unionid with "taxodont" teeth somewhat similar to Plicatounio known from nonmarine Cretaceous deposits of eastern Asia, but lacking the characteristic posterior plications of this genus.
2 Bivalves Clam A - genus and species unknown - hinge with two cardinal teeth and anterior lateral