Wagonroad Upper Horizon (Paleocene of the United States)

Also known as UALP 7733; Gidley's Locality 4, in part; Dragon Level at Wagonroad

Where: Emery County, Utah (39.0° N, 111.0° W: paleocoordinates 46.0° N, 90.5° W)

• coordinate based on political unit

When: North Horn Formation, Torrejonian (63.8 - 60.9 Ma)

• immediately above Dragon Canyon sensu stricto and close to the bottom of a reversed magnetic polarity zone interpreted as C27r, but there is no tie point in the section: see Lucas et al. 1997

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial

Primary reference: Y. Tomida and R. F. Butler. 1980. Dragonian mammals and Paleocene magnetic polarity stratigraphy, North Horn Formation, central Utah. American Journal of Science 280:787-811 [J. Alroy/J. Alroy/P. Mannion]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 14889: authorized by John Alroy, entered by John Alroy on 30.04.1994

Creative Commons license: CC BY (attribution)

Taxonomic list

• 87 m below upper contact of Fm.
firmly correlated using paleomag with Dragon Canyon
Mammalia
 Multituberculata - Taeniolabididae
Catopsalis fissidens Cope 1884 multituberculate
 Condylarthra - Hyopsodontidae
Promioclaenus cf. lemuroides Matthew 1897 condylarth
 Theriamorpha - Periptychidae
Haploconus angustus Cope 1881 condylarth
 Procreodi - Arctocyonidae
Chriacus baldwini Cope 1882 condylarth