DNM 116, N.A.A. Quarry (Jurassic of the United States)

Also known as Allosaurus Quarry, UT-20

Where: Uintah County, Utah (40.4° N, 109.3° W: paleocoordinates 35.9° N, 54.7° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Salt Wash Member (Morrison Formation), Kimmeridgian (157.3 - 152.1 Ma)

• low in formation

• bed-level stratigraphic resolution

Environment/lithology: coarse channel fill; intraclastic conglomerate and medium-grained, quartzose sandstone

• conglomerates have some fragments of mudstone and tan-weathering micritic limestone; sandstones have round spherical quartz grains of medium-sized sand, planar crossbed sets, made of couplets of coarser and finer-grained laminae. Allosaurus skeleton in a gravel matrix.

Size class: macrofossils

Collected by D. Chure, R. Jones in 1990–1992, 1996

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

Primary reference: J. F. Hubert and D. J. Chure. 1992. Taphonomy of an Allosaurus quarry in the deposits of a Late Jurassic braided river with a gravel-sand bedload, Salt Wash Member of the Morrison Formation, Dinosaur National Monumnt, Utah. In J. R. Wilson (ed.), Field Guide to Geologic Excursions in Utah and Adjacent Areas of Nevada, Idaho, and Wyoming. Utah Geological Survey Miscellaneous Publication 92-3:375-381 [M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 193250: authorized by Matthew Carrano, entered by Matthew Carrano on 08.05.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Reptilia
 Theropoda -
Allosaurus jimmadseni n. sp.
Allosaurus jimmadseni n. sp. Chure et al. 2006 allosauroid
DINO 11541