Gateway to the Paleobiology Database
Rainbow Park microsite (DNM 96) (Jurassic of the United States)

Also known as UT-26

Where: Uintah County, Utah (40.5° N, 109.2° W: paleocoordinates 36.0° N, 54.6° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Brushy Basin Member (Morrison Formation), Kimmeridgian (155.7 - 150.8 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; lithified, bentonitic, gray, argillaceous, cherty/siliceous mudstone and unlithified, carbonaceous mudstone

• Upper horizon was deposited in quiet water conditions while the lower horizon was deposited in exposed conditions
• Lower horizon: "gray bentonitic mudstone/siltstone with small chert clasts and clay pebbles"

•Upper horizon: "gray mudstone/siltstone, lamination present with small lenses of slightly coarser texture. These lenses are rich in organic matter and contain small bones oriented with the long axis parallel to bedding"

Size classes: macrofossils, mesofossils

Collected by R. West in 1984

Collection methods: quarrying, surface (float), surface (in situ), mechanical, sieve,

Primary reference: D. J. Chure and G. F. Engelmann. 1989. The fauna of the Morrison Formation in Dinosaur National Monument. In J. J. Flynn (ed.), Mesozoic/Cenozoic Vertebrate Paleontology: Classic Localities, Contemporary Approaches: Field Trip Guide Book T322. American Geophysical Union, Washington, DC 8-14 [M. Carrano/K. Maguire/M. Carrano] more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 57913: authorized by Matthew Carrano, entered by Kaitlin Maguire on 06.01.2006, edited by Matthew Carrano and Jonathan Tennant

Creative Commons license: CC BY (attribution)