Carnegie Quarry N, Sheep Creek (Jurassic to of the United States)

Also known as Freezeout Mountains, Freezeout Hills

Where: Albany County, Wyoming (42.2° N, 105.9° W: paleocoordinates 37.7° N, 52.0° W)

• coordinate estimated from map

• outcrop-level geographic resolution

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

• upper third of formation

• bed-level stratigraphic resolution

Environment/lithology: "channel"; paleosol/pedogenic, gray siltstone and gray, green claystone

• "The bone-producing lithology of the quarry is generally a somewhat secondarily stratified light to medium gray siltstone, with some slight mottling through the quarry. Plant debris is uncommon. There are multiple poorly defined layers of small, white to gray carbonate nodules present at the quarry. These layers are less than half a meter thick. A barren, greenish gray clay-rich layer, less than 20 cm thick, overlies one of the carbonate zones."

Size classes: macrofossils, mesofossils

Collected by C. Gilmore in 1902; reposited in the CM

Collection methods: quarrying, mechanical,

Primary reference: W. J. Holland. 1904. Section of Paleontology. Annual Report of the Director for the Year Ending March 31, 1904 21-25 [M. Carrano/A. Murch/A. Murch]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 48837: authorized by Matthew Carrano, entered by Matthew Carrano on 30.03.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Testudines - Pleurosternidae
Glyptops sp.2 Marsh 1890 turtle
 Dinosauria -
Dinosauria indet.3 dinosaur
CM 36681, 36688
 Saurischia -
Haplocanthosaurus sp.2 Hatcher 1903 sauropod
 Saurischia - Diplodocidae
Apatosaurus sp.1 Marsh 1877 diplodocid
 Saurischia - Camarasauridae
Camarasaurus sp.3 Cope 1877 camarasaurid
CM 1252, 1255, 21730, 36663–4, 36666, 36668–9, 36671, 36675, 36677–80, 36684–6, 36693–5
 Avetheropoda - Allosauridae
Allosaurus fragilis3 Marsh 1877 allosaurid
CM 1254
 Ornithischia - Stegosauridae
Stegosaurus sp.3 Marsh 1877 ornithischian
CM 21737, 36696–8
 Loricata -
Crocodylia indet.2 crocodilian