Eldorado Springs North tracksite (Cretaceous of the United States)

Where: Boulder County, Colorado (39.9° N, 105.3° W: paleocoordinates 38.7° N, 64.9° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Muddy Sandstone Formation (Dakota Group), Late/Upper Albian (105.3 - 99.6 Ma)

• Sequence 3, middle to upper part of Muddy Formation

• group of beds-level stratigraphic resolution

Environment/lithology: coastal; sandstone

• "Track-bearing strata of the middle to upper part of the Muddy Formaion evidently represent onlap of coastal deposits and backfilling of valleys during transgression."

Size class: macrofossils

Preservation: cast, mold/impression, trace

Collection methods: surface (in situ),

Primary reference: M. G. Lockley, M. Matsukawa, and I. Obata. 1989. Dinosaur tracks and radial cracks: unusual footprint features. Bulletin of the National Science Museum, Tokyo, Series C 15(4):151-160 [M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 55196: authorized by Matthew Carrano, entered by Kaitlin Maguire on 28.09.2005, edited by Steven Miller

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Ornithischia - Iguanodontipodidae
"Caririchnium leonardii" = Hadrosauropodus leonardii2
"Caririchnium leonardii" = Hadrosauropodus leonardii2 Lockley 1987 ornithopod
trackways
 Theropoda - Ornithomimipodidae
Magnoavipes sp.1 Lee 1997 coelurosaur
trackways