UMGS Mesozoic loc. 749 (Triassic of the United States)

Also known as ADB-123F

Where: Alaska (57.7° N, 155.4° W: paleocoordinates 4.6° N, 81.6° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: "platy limestone and shale" Member (Kamishak Formation), Norian (228.0 - 208.5 Ma)

• Upper Norian

•"platy limestone and shale" lower part

•From Blodget, 2008: "Silberling and others, 1997, note that this locality is stratigraphically lower than SU locality 3652, low in the well bedded sequence [equivalent to low in the platy limestone and shale member herein]"

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified shale and lithified limestone

• thin- to medium-bedded calcareous shale, siliceous shale, limestone, and minor volcaniclastic beds

Size class: macrofossils

Preservation: mold/impression

Collected by Lachenbruch, M.C. in 1959; reposited in the USGS

Primary reference: N. J. Silberling, J. A. Grant-Mackie, and K. M. Nichols. 1997. The Late Triassic bivalve Monotis in accreted terranes of Alaska. United States Geological Survey Bulletin 2151:1-21 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 139025: authorized by George Stanley, entered by Hannah Shepherd on 07.02.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Pectinida - Monotidae