Quarry 11, Como Bluff (YPM) (Jurassic to of the United States)

Also known as WY-18

Where: Albany County, Wyoming (41.9° N, 106.0° W: paleocoordinates 37.5° N, 52.2° W)

• coordinate stated in text

• small collection-level geographic resolution

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

• upper middle part of formation

• bed-level stratigraphic resolution

Environment/lithology: wet floodplain; mudstone

• poorly drained floodplain

Size class: macrofossils

Collected by W. Reed in 1879-1880; reposited in the YPM

Collection methods: quarrying, mechanical,

Primary reference: O. C. Marsh. 1881. Principal characters of American Jurassic dinosaurs. Part V. The American Journal of Science and Arts, series 3 21:417-423 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 39369: authorized by Matthew Carrano, entered by Matthew Carrano on 27.05.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Saurischia - Diplodocidae
"Brontosaurus amplus n. sp." = Brontosaurus excelsus
"Brontosaurus amplus n. sp." = Brontosaurus excelsus Marsh 1879 diplodocid
YPM 1981
 Ornithischia - Stegosauridae
"Stegosaurus duplex n. sp." = Stegosaurus armatus1
"Stegosaurus duplex n. sp." = Stegosaurus armatus1 Marsh 1877 ornithischian
"originally referred by the writer" to this taxon
Mammalia
  -
Mammalia indet.2 Linnaeus 1758 mammal
unidentified tooth