McGill 1 (Cretaceous of the United States)

Also known as LACM 7943

Where: Powder River County, Montana (45.7° N, 105.1° W: paleocoordinates 52.1° N, 78.9° W)

• coordinate estimated from map

When: Hell Creek Formation, Late/Upper Maastrichtian (70.6 - 66.0 Ma)

Environment/lithology: fluvial; claystone

• sandy claystone

Size class: macrofossils

Reposited in the LACM

Primary reference: T. S. Kelly. 2014. Preliminary report on the mammals form Lane's Little Jaw Site Quarry: a latest Cretaceous (earliest Puercan?) local fauna, Hell Creek Formation, southeastern Montana. Paludicola 10(1):50-91 [P. Holroyd/P. Holroyd]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 183110: authorized by Patricia Holroyd, entered by Patricia Holroyd on 01.12.2016

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Reptilia
 Choristodera -
Champsosaurus sp.
Champsosaurus sp. Cope 1876 choristodere
 Ornithischia - Ceratopsidae
Triceratops sp.
Triceratops sp. Marsh 1889 ceratopsid
 Ornithischia -
Pachycephalosaurus sp.
Pachycephalosaurus sp. Brown and Schlaikjer 1943 ornithischian
 Loricata -
Crocodylia indet.
Crocodylia indet. crocodilian