Ingrid's Jaw (Cretaceous of the United States)

Also known as DMNH loc. 3322; UWBM loc. C1098

Where: Weld County, Colorado (40.8° N, 104.7° W: paleocoordinates 47.4° N, 80.4° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Laramie Formation, Lancian (70.6 - 66.0 Ma)

• group of beds-level stratigraphic resolution

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

• "fluvial channel"
• "distinctly orange-colored [sediments] made up of upper fine-grained, moderately well-sorted sandstone [with] extensive, meter-scale, soft-sediment deformation [and] 20-30 cm long distorted trough cross-bedding can still be recognized. Mud rip-up clasts up to 15 cm in diameter are found just above some of the preserved bed breaks"

Size class: mesofossils

Reposited in the DMNH

Collection methods: bulk, surface (in situ), sieve,

• "Microvertebrate fossils have been surface collected and found within sediments screenwashed from this locality"

Primary reference: G. P. Wilson, M. Dechesne, and I. R. Anderson. 2010. New latest Cretaceous mammals from northeastern Colorado with biochronologic and biogeographic implications. Journal of Vertebrate Paleontology 30(2):499-520 [J. Alroy/J. Alroy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 96083: authorized by John Alroy, entered by John Alroy on 14.05.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Mammalia
 Multituberculata - Cimolomyidae
Paressonodon nelsoni n. gen. n. sp., Meniscoessus cf. robustus
Paressonodon nelsoni n. gen. n. sp. Wilson et al. 2010 multituberculate
Meniscoessus cf. robustus Marsh 1889 multituberculate
 Multituberculata - Neoplagiaulacidae
Parikimys carpenteri n. gen. n. sp.
Parikimys carpenteri n. gen. n. sp. Wilson et al. 2010 multituberculate
 Theriamorpha - Pediomyidae
Pediomyidae indet., Protolambda hatcheri, ? Leptalestes cooki
Pediomyidae indet. Simpson 1927 metatherian
Protolambda hatcheri Osborn 1898 metatherian
? Leptalestes cooki Clemens 1966 metatherian
 Theriamorpha - Herpetotheriidae
"Alphadon jasoni" = Nortedelphys jasoni
"Alphadon jasoni" = Nortedelphys jasoni Storer 1991 marsupial