MNA 1221 (Cretaceous to of the United States)

Also known as east side, Pine Valley Mountains

Where: Washington County, Utah (37.5° N, 113.5° W: paleocoordinates 45.8° N, 84.1° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Iron Springs Formation, Late/Upper Santonian to Late/Upper Santonian (85.8 - 70.6 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marginal marine; sandstone and mudstone

• "brackish water"
• "sandstones and mudstones"

Size class: mesofossils

Collection methods: bulk, sieve,

Primary reference: J. G. Eaton. 1999. Vertebrate paleontology of the Iron Springs Formation, Upper Cretaceous, southwestern Utah. In D. D. Gillette (ed.), Vertebrate Paleontology in Utah, Utah Geological Survey Miscellaneous Publication 99-1:339-343 [J. Alroy/J. Alroy/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 14412: authorized by John Alroy, entered by John Alroy on 15.05.2002, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

• just above a molluscan fauna thought to be latest Cenomanian or earliest Turonian
Chondrichthyes
 Hybodontiformes -
? Lissodus sp. Brough 1935 elasmobranch
 Hybodontiformes - Hybodontidae
Hybodus sp. Agassiz 1834 elasmobranch
Mammalia
 Tribosphenida -
Metatheria indet. Huxley 1880 metatherian
 Multituberculata -
Bryceomys sp. Eaton 1995 multituberculate