of
Sample: Sample No. 68APr73A -- USGS No. Mesozoic loc. M5105
Locality: Field No. 68APr73A
Description: Siliceous mollusks in marble. (description from Jones, 1969 E&R report) [Harris E&R report 12/3/83 provides following description: "Siliceous cherty limestone with scattered skeletal debris from lat. 59o 54.2 min., long. 139o 24.5 min., Yakutat D-4 quadrangle."]
Location: Alaska Quadrangle: Yakutat D-4
Township&Range: T23S R35E Section: SW1/4 sec. 22
Lat.: 59o54.2 ' Long.: 139o24.5 '
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: Triassic
Formation: Yakutat Group
Comment:Limestone with silicified snails and fragments of pelecypod? shells - no precise age determination is possible, but a Triassic age seems likely.
Occurrence(s)
No. Group Name Qty Notes
1 Snails silicified snails
2 Bivalves fragments of pelecypod? shells

Title: Report on Referred Fossils ,  1983 (12/03)
The 20- to 200-mesh heavy- and light-mineral insoluble residues are being returned to you for your disposal.
Report by: Anita G. Harris
Referred by: George Plafker
Age: Mississippian-Recent
Comment:2.4 kg of rock was processed (112 g of +20 mesh insoluble residue)

AGE: Mississippian to Recent.

Occurrence(s)
No. Group Name Qty Notes
1 Vertebrates 3 ichthyoliths of post-Devonian morphotype