Also known as Locality #2
Where: Dillingham County, Alaska (60.9° N, 157.4° W: paleocoordinates 7.8° N, 80.4° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Holitna Group, Norian (228.0 - 208.5 Ma)
• No formal stratigraphic name has been applied to the Triassic rocks of the Taylor Mountain D-2 and D-3 quadrangles. The term "Holitna Group" has been suggested to be too broadly defined (includes all Paleozoic carvonates in the Holitna River section). LePain and others (2000) designated these strata as Tzrlc (silty limestone and chert) on their geological map. Total thickness of Triassic rocks in section is unknown, although a minimum thickness of 300 m is estimated.
• bed-level stratigraphic resolution
Environment/lithology: marine; yellow, silty mudstone
Size class: macrofossils
Preservation: recrystallized, replaced with silica
Collection methods: quarrying,
• Collected by R.B. Blodgett (1984, 1999). Field #99RB37.Consists almost entirely of brachiopods and much rarer bivalves. Collections deposited in U of Alaska Museum in Fairbanks
Primary reference: C. A. McRoberts and R. B. Blodgett. 2000. Late Triassic (Norian) mollusks from the Taylor Mountains quadrangle, southwestern Alaska. United States Geological Survey Professional Paper 1662:55-67 [A. Miller/A. Hendy/S. Kolbe]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 39898: authorized by Austin Hendy, entered by Austin Hendy on 11.06.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
Maoritrigonia sp. Fleming 1962 clam |