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Quarry 9, Como Bluff (YPM) (Jurassic to of the United States)

Also known as Mammal Quarry, WY-15

Where: Albany County, Wyoming (41.9° N, 106.0° W: paleocoordinates 37.5° N, 52.2° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Brushy Basin Member (Morrison Formation), Kimmeridgian to Kimmeridgian (155.7 - 145.5 Ma)

• middle upper part of the Morrison series

• bed-level stratigraphic resolution

Environment/lithology: fluvial-lacustrine; gray, green mudstone and coarse-grained sandstone

• Several hypotheses for the paleoenvironment (lacustrine, ephemeral ponds)
• Secondary lithology described as 'coarse sandstone'

Size classes: macrofossils, mesofossils

Collected by W. Reed; reposited in the USNM, YPM

Collection methods: bulk, quarrying, mechanical, sieve,

Primary reference: O. C. Marsh. 1881. Discovery of a fossil bird in the Jurassic of Wyoming. American Journal of Science 31:341-342 [M. Carrano/M. Carrano/M. Carrano] more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 12816: authorized by Emmanuel Fara, entered by Emmanuel Fara on 18.12.2001, edited by Robin Whatley, Matthew Carrano and Roger Benson

Creative Commons license: CC BY (attribution)