H34D site (IMNH 2167) (Cretaceous to of the United States)

Also known as Highway 34 Dinosaur locality; Tincup Canyon

Where: Caribou County, Idaho (43.2° N, 111.1° W: paleocoordinates 43.5° N, 70.6° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Wayan Formation, Late/Upper Albian to Late/Upper Albian (105.3 - 93.5 Ma)

• Upper part of Wayan Fm

•Dating of detrital zircons from 120 m above the base of the formation and from the top of the formation has yielded a maximum age of 101.8 Ma (latest Albian) and a minimum age of 95.5 Ma (early Cenomanian; Krumenacker, 2010)

• bed-level stratigraphic resolution

Environment/lithology: crevasse splay; fine, gray, silty sandstone

• Semi-arid floodplain environment; channel lag or crevasse splay
• Gray (Munsell 6/1), fine, quartz-dominated sandstone (moderately poorly sorted with grains ranging from very fine lower to fine upper) with a silt and clay matrix

•"The fossiliferous horizon consists of a petroliferous fine-grained gray calcite-cemented sandstone with some caliche clasts. The fossil-bearing unit coarsens upward transitioning into sandstone with caliche and gypsum nodules."

Size classes: macrofossils, mesofossils

Collected by Montana State University in 2003–2004, 2007

Collection methods: surface (in situ),

• Idaho Museum of Natural History collection

Primary reference: L. J. Krumenacker, D. J. Simon, G. Scofield and D. J. Varricchio. 2017. Theropod dinosaurs from the Albian–Cenomanian Wayan Formation of eastern Idaho. Historical Biology 29:170-186 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 201911: authorized by Philip Mannion, entered by Philip Mannion on 10.06.2019, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Avetheropoda -
Coelurosauria indet. coelurosaur
IMNH 2167/50102, "morphotype 6"
 Avetheropoda - Dromaeosauridae
Dromaeosauridae "indet. 4" Colbert and Russell 1969 coelurosaur
IMNH 2167/50104, "morphotype 4"
 Avetheropoda -
Tyrannosauroidea "indet. 2" Walker 1964 coelurosaur
IMNH 2167/50108, "morphotype 2"
Tyrannosauroidea "indet. 3" Walker 1964 coelurosaur
IMNH 2167/50105–50107, "morphotype 3"
 Ornithischia - Nodosauridae
Nodosauridae indet. Marsh 1890 ornithischian
Partial skeleton
Mammalia
 Allotheria -
Multituberculata indet. Cope 1884 multituberculate
IMNH 50887
 Multituberculata -
Cimolodonta indet. McKenna 1975 multituberculate
IMNH 50885 and 50886
cf. Paracimexomys perplexus Eaton and Cifelli 2001 multituberculate
IMNH 50884
Bryceomys intermedius Eaton and Cifelli 2001 multituberculate
IMNH 50883
cf. Cedaromys sp. Eaton and Cifelli 2001 multituberculate
IMNH 50880-50882
 Multituberculata - Cimolodontidae
Cimolodon akersteni n. sp. Weaver et al. 2019 multituberculate
IMNH 50879 - type