Where: Washington County, Utah (37.3° N, 113.5° W: paleocoordinates 43.5° N, 81.0° W)

• coordinate based on political unit

When: Iron Springs Formation, Late/Upper Cenomanian to Late/Upper Cenomanian (99.6 - 70.6 Ma)

• "near base of Iron Springs Formation"

•

•Age of Iron Springs Formation is poorly constrained. Eaton et al. (2014) obtained radiometric dates from the Iron Springs Formation. They reported an 40Ar/39Ar age of 83.1±1.1 Ma from a blue biotite ash found in Parowan Canyon, east of Parowan Gap. However, age may extend back to the latest Cenomanian (Goldstrand, 1990; Fillmore, 1991; Eaton et al. 2001)

Environment/lithology: terrestrial; lithology not reported

Size classes: macrofossils, mesofossils

Primary reference: R. L. Nydam. 2013. Lizards and snakes from the Cenomanian through Campanian of southern Utah: filling the gap in the fossil record of Squamata from the Late Cretaceous of the Western Interior of North America. In A. L. Titus & M. A. Loewen (ed.), At the Top of the Grand Staircase: The Late Cretaceous of Southern Utah 370-423 [P. Barrett/T. Cleary/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 181360: authorized by Paul Barrett, entered by Terri Cleary on 08.09.2016

Creative Commons license: CC BY (attribution)