Alaska Paleontological Database

Sample Detail

of

Sample:	Sample No. 68ATr9
Locality:	Field No. 68ATr9
Description:	Demarcation Point Quadrangle; west side of gap on Aichilik River; 69^o 30.9' N.; 143^o 03.0' W.; from calcareous zone near possibly gradational contact with underlying Lisburne Group. Collector: I.L. Taileur, 1968.
Location:	Alaska Quadrangle: Demarcation Point C-4 Lat.: 69^o30.9 ^' Long.: 143^o03.0 ^'

Reference

Title:	Report on Referred Fossils , 1968 (11/19)
	Three of the four collections in this shipment contain definite Permian fossils. The fourth collection (68ATo2) consists only of an indeterminate mold of a pelecypod. One collection (68ATo16) also includes a portion of phaceloid lithostrotionoid coral colony in a dark limestone matrix completely unlike the sandstone of the other rocks in the collection. The coral undoubtedly came from the Lisburne Group and is Mississippian. The collections are being retained.
Report by:	J. Thomas Dutro , Jr.
Referred by:	Irv L. Tailleur


Age:	Early Permian-Late Permian (latest Early Permian or early Late Permian)
Formation:	Sadlerochit Group (Sadlerochit Formation)





Comment:	Characteristic assemblage of lower part of Sadlerochit Formation, either latest Early or early Late Permian.

Occurrence(s)
No.	Group		Name	Qty	Notes
1	Brachiopods		Megousia sp.
2	Brachiopods		Yakovlevia sp. (=Muirwoodia)
3	Brachiopods		dictyoclostid brachiopod, indet.
4	Brachiopods		Spiriferella sp.
5	Bivalves		pelecypod prisms, indet.