Montezuma Canyon (Jurassic to of the United States)

Where: San Juan County, Utah (37.6° N, 109.2° W: paleocoordinates 33.7° N, 56.2° 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)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected by W. T. Lee

Collection methods: surface (float),

Primary reference: H. E. Gregory. 1936. The San Juan country. A geographic and geologic reconnassance of southeastern Utah. United States Geological Survey Professional Paper 188:v-123 [M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 192428: authorized by Matthew Carrano, entered by Matthew Carrano on 03.04.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

• IDs by C. W. Gilmore
Reptilia
 Saurischia - Diplodocidae
Diplodocidae indet. diplodocid
"sauropod dinosaur of the Brontosaurus-Apatosaurus group"
 Avetheropoda - Allosauridae
"? Antrodemus sp." = Allosaurus
"? Antrodemus sp." = Allosaurus Marsh 1877 allosaurid
proximal tibia