Poison Creek Quarry (MSM) (Jurassic of the United States)

Also known as WY-71

Where: Johnson County, Wyoming (44.1° N, 106.8° W: paleocoordinates 39.1° N, 51.5° W)

• coordinate stated in text

• outcrop-level geographic resolution

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

• relatively low in the formation

• bed-level stratigraphic resolution

Environment/lithology: wet floodplain; silty claystone and lithified sandstone

• poorly drained floodplain
• "a silty claystone" with bones below "indurated (highly compacted) sandstone"

Size class: macrofossils

Collected by B. Erickson in 1976–1990

Collection methods: quarrying, mechanical,

Primary reference: C. E. Turner and F. Peterson. 1999. Biostratigraphy of dinosaurs in the Upper Jurassic Morrison Formation of the Western Interior, U.S.A. In D. D. Gillette (ed.), Vertebrate Paleontology in Utah, Utah Geological Survey Miscellaneous Publication 99-1:77-114 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 58510: authorized by Matthew Carrano, entered by Matthew Carrano on 10.02.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Ornithischia - Stegosauridae
Stegosaurus sp. Marsh 1877 ornithischian
 Ornithischia -
Camptosaurus sp. Marsh 1885 ornithopod
 Theropoda -
Allosaurus sp. Marsh 1877 allosauroid
 Theropoda - Noasauridae
? Elaphrosaurus sp.1 Janensch 1920 ceratosaur
 Saurischia - Camarasauridae
Camarasaurus sp. Cope 1877 camarasaurid
 Saurischia -
? Haplocanthosaurus sp.2 Hatcher 1903 sauropod
 Saurischia - Diplodocidae
Apatosaurus sp. Marsh 1877 diplodocid
Diplodocus sp. Marsh 1878 diplodocine
? Barosaurus sp. Marsh 1890 diplodocine