Where: Oregon (45.0° N, 117.3° W: paleocoordinates 18.5° N, 47.3° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Martin Bridge Formation, Tuvalian (232.0 - 221.5 Ma)

• Lower part of Martin Bridge Formation, undivided welleri-macrolobatus zone.

• group of beds-level stratigraphic resolution

Environment/lithology: lithified, calcareous mudstone

Size class: macrofossils

Collected by C.A. McRoberts in 1989

• Repository: University of Montana Paleontological Museum

Primary reference: C. McRoberts. 1992. Systematics and paleobiogeography of Late Triassic Gryphaea (Bivalvia) from the North American Cordillera. Journal of Paleontology 66(1):28-39 [W. Kiessling/U. Merkel] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 100362: authorized by Arnold Miller, entered by Sarah Kolbe on 08.12.2010, edited by Uta Merkel

Creative Commons license: CC BY (attribution)