DNM 315, Dinosaur National Monument (Jurassic of the United States)

Also known as UT-19

Where: Uintah County, Utah (40.4° N, 109.3° W: paleocoordinates 37.0° N, 56.3° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Brushy Basin Member (Morrison Formation), Middle Tithonian (150.8 - 145.0 Ma)

• 10 m above the Quarry sandstone interval and 26 m below the top of the Brushy Basin Member within an interval that consists of mudstone with numerous thin bentonite beds.

• bed-level stratigraphic resolution

Environment/lithology: crevasse splay; volcaniclastic, gray, green mudstone

• "probably deposited in overbank environment"
• "a greenish-gray smectitic mudstone bed"

Size classes: macrofossils, mesofossils

Preservation: mold/impression

Collected by S. K. Madsen in 1991

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

• Discovered by Scott K. Madsen on 16 September 1991

Primary reference: D. J. Chure, C. E. Turner, and F. Peterson. 1992. An embryo of the ornithopod dinosaur Camptosaurus from the Morrison Formation (Upper Jurassic) of Dinosaur National Monument, Utah. Journal of Vertebrate Paleontology 12(3, suppl.):23A [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 52110: authorized by Matthew Carrano, entered by Kaitlin Maguire on 22.07.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Osteichthyes indet. bony fish
"fish scale"
 Saurischia - Diplodocidae
Diplodocidae indet. diplodocid
 Theropoda -
Theropoda indet. theropod
small maxillary or dentary tooth
 Neornithischia -
Ornithopoda indet. bird foot dinosaur
adult tooth
Camptosaurus sp. Marsh 1885 bird foot dinosaur
DINO 15624
 Squamata -
Lacertilia indet. lizard
"a few scattered lizard postcranial bones"
 Rhynchocephalia - Sphenodontidae
Sphenodontidae indet. Cope 1869 rhynchocephalian