Sample Detail of
Sample: Sample No. 68AEs596 -- USGS No. M1299-SD and 8254-SD
Locality: Field No. 68AEs596
Description: The locality is situated on the shoreline of a small islet in the NW1/4, NE1/4, section 34, T70S, R79E, Craig D-4 quadrangle. Collected in Eifelian strata of the Wadleigh Limestone by J. Evans of the USGS in 1968 (description modified from Blodgett and Cook, 2002, p. 23) [Karheen Narrows area, 1.82 miles at 093 degrees from triangulation station Quince. (description from Pojeta's E&R report)]
Location: Alaska Quadrangle: Craig D-4
Township&Range: T70S R79E Section: NW1/4, NE1/4 sec. 34
Lat.: 55o45.75 ' Long.: 133o16.65 '
Reference
Title: Cheeneetnukiidae, a new Middle Devonian murchisonioid gastropod family, including the new genera Cheeneetnukia and Ulungaratoconcha based on representatives from Alaska and Australia ,  2002
Two new genera of murchisonioid gastropods, Cheeneetnukia and Ulungaratoconcha, are established from the Middle Devonian (Eifelian and Givetian) strata of the Old World Realm and are placed in Cheeneetnukiidae fam. nov. belonging to the Murchisonioidea. Cheeneetnukiidae represent a distinctive group of Middle Devonian murchisonioids characterized by a squared-off (rectangular) whorl profile, a flattened vertical outer whorl surface with a broad, centrally situated selenizone which is bounded above and below by strong angulations, often in the form of flange-like projections. Strongly ornate (nodose or spinose) forms are common amongst the younger Givetian representatives of the family. The family underwent an explosive adaptive radiation of intricate and highly decorated forms that are restricted to the Middle Devonian (Eifelian and Givetian). The family is characteristic for warm tropical seaways of the Middle Devonian, and its representatives are known from Germany, various accreted Alaskan terranes (Farewell, Alexander and Arctic Alaska), northeastern Australia, Malaysia and southern China. Three new species are here described: 1) the type species of Cheeneetnukia, C. frydai from the Eifelian of Alaska, known from both the Cheeneetnuk Limestone of west-central Alaska (Nixon Fork subterrane of the Farewell terrane) and the Wadleigh Limestone from southeastern Alaska (Alexander terrane); 2) C. australis from the uppermost Dosey Limestone (early Givetian) of north Queensland, Australia; and 3) the type species of Ulungaratoconcha, U. heidelbergeri from Eifelian strata of the Ulungarat Formation (Member A), northeastern Brooks Range, northeastern Alaska (Arctic Alaska terrane).
Report by: Robert B. Blodgett , Alex G. Cook
Age: Eifelian
Formation: Wadleigh Limestone
Occurrence(s)
No. Group Name Qty Notes
1 Snails Cheeneetnukia frydai n. sp.

Title: Report on Referred Fossils ,  1968 (01/02)
Status of work: Incomplete; reports by others will be sent later.
Report by: John Pojeta
Referred by: A. Thomas Ovenshine
Age: Silurian-Devonian
Comment:This collection contains fragmentary silicified pelecypods of the myophoriid and megalodontid types, genera and species indet. The pelecypods are weathered and badly broken, however, they are very unusual shells and if possible I would appreciate receiving one or more large blocks (25 lbs or so) of limestone for acid etchin. The general structure of the pelecypods in collections 8255-SD and 8254-SD suggest a Silurian or Devonian age for the rocks in which they were found. Collection also contains poorly preserved silicified stromatoporoid ((d. By William Oliver as suggestive of Silurian or Devonian age). [Collection made by J. Evans - RBB]

[Note by R.B. Blodgett: material examined by Pojeta assigned USGS locality number of 8254-SD]

Occurrence(s)
No. Group Name Qty Notes
1 Bivalves megalodontid, genus and species indeterminate
2 Bivalves myophoriid, genus and species indeterminate