Interlocken Business Park tracksite (Cretaceous of the United States)

Also known as Broomfield

Where: Broomfield County, Colorado (39.9° N, 105.1° W: paleocoordinates 46.6° N, 81.3° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Laramie/Arapahoe Formation, Late/Upper Maastrichtian (70.6 - 66.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; fine-grained, brown, gray sandstone

• "a light-grey to light- orange-brown (weathered) or light-brown (weathered) fine-grained sandstone"

Size class: macrofossils

Preservation: trace

Collected by S. Langston, J. Hoiem in 1999

Collection methods: surface (float), peel or thin section,

Primary reference: J. Wright and M. G. Lockley. 2001. Dinosaur and turtle tracks from the Laramie/Arapahoe formations (Upper Cretaceous), near Denver, Colorado, USA. Cretaceous Research 22:365-376 [M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 224523: authorized by Matthew Carrano, entered by Matthew Carrano on 11.03.2022

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Ornithischia -
Ornithopoda indet. Marsh 1881 ornithopod
morphotype C; tracks 6, 8. "an ornithopod (dryosaurid or hypsilophodontid)"
 Theropoda -
Coelurosauria indet. Huene 1914 coelurosaur
morphotype A; tracks 3–5, 7, 9–14 and morphotype B; tracks 1, 2, 15. "possible trackmaker candidates for morphotypes A and B include ornithomimids, elmisaurids and caenagnathids"