Quarry 1A, Como Bluff (YPM) (Jurassic to of the United States)

Also known as Big Canyon Quarry, WY-27

Where: Carbon County, Wyoming (41.9° N, 106.1° W: paleocoordinates 37.4° N, 52.2° W)

• coordinate stated in text

• small collection-level geographic resolution

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

• low in formation

• bed-level stratigraphic resolution

Environment/lithology: "channel"; medium-grained sandstone

Size class: macrofossils

Collected by Lakes; reposited in the YPM

Collection methods: quarrying, mechanical,

Primary reference: O. C. Marsh. 1879. Notice of new Jurassic reptiles. American Journal of Science and Arts 18:501-505 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 39337: authorized by Matthew Carrano, entered by Matthew Carrano on 26.05.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Reptilia
 Ornithischia -
"? Othnielosaurus sp." = Nanosaurus2
"? Othnielosaurus sp." = Nanosaurus2 Marsh 1877 ornithopod
femur
 Theropoda -
"Camptonotus amplus n. sp." = Allosaurus amplus, "Antrodemus sp." = Allosaurus3
"Camptonotus amplus n. sp." = Allosaurus amplus Marsh 1879 allosauroid
YPM 1879
"Antrodemus sp." = Allosaurus3 Marsh 1877 allosauroid
YPM 1892
 Saurischia - Camarasauridae
Camarasaurus sp.3
Camarasaurus sp.3 Cope 1877 camarasaurid
YPM 4633
 Saurischia - Diplodocidae
Diplodocinae indet.1
Diplodocinae indet.1 diplodocine
YPM 4768; Diplodocus or Barosaurus
1Foster 2003; 2Galton et al. 2015; 3Ostrom and McIntosh 1999