Willow Springs Quarry (Jurassic to of the United States)

Also known as BYU ESM-163R

Where: Emery County, Utah (38.7° N, 111.3° W: paleocoordinates 35.2° N, 57.8° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Brushy Basin Member (Morrison Formation), Kimmeridgian to Kimmeridgian (157.3 - 145.0 Ma)

• near base of Upper = Brushy Basin Member

• bed-level stratigraphic resolution

Environment/lithology: "channel"; brown siltstone

• "tan siltstone"

Size classes: macrofossils, mesofossils

Collected by J. A. Jensen in 1963

Collection methods: quarrying, mechanical,

Primary reference: P. M. Galton and J. A. Jensen. 1973. Skeleton of a hypsilophodontid dinosaur (Nanosaurus (?) rex) from the Upper Jurassic of Utah. Brigham Young University Geology Studies 20(4):137-157 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 47196: authorized by Matthew Carrano, entered by Matthew Carrano on 18.02.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

 Saurischia - Camarasauridae
cf. Camarasaurus sp. Cope 1877 camarasaurid
"a new sauropod similar to Camarasaurus"
 Avetheropoda - Allosauridae
Allosaurus sp.1 Marsh 1877 allosaurid
MCZ 3897
 Neornithischia -
Othnielosaurus consors2 Marsh 1894 ornithischian
Camptosaurus sp. Marsh 1885 bird foot dinosaur
 Lepidosauria -
Rhynchocephalia indet. G√ľnther 1867 rhynchocephalian