Lithornis promiscuus and plebius types (Paleocene of the United States)

Where: Park County, Wyoming (44.3° N, 109.0° W: paleocoordinates 49.7° N, 90.3° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Plesiadapis cookei mammal zone, Sand Coulee beds Member (Willwood Formation), Clarkforkian (56.8 - 55.8 Ma)

• middle Clarkforkian

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected in 1983; reposited in the USNM

Primary reference: P. W. Houde. 1988. Paleognathous birds from the Early Tertiary of the Northern Hemisphere. Publications of the Nuttall Ornithological Club 22:1-148 [P. Mannion/P. Mannion]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 133237: authorized by Philip Mannion, entered by Philip Mannion on 07.09.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Theriamorpha - Nyctitheriidae
Ceutholestes dolosus Rose and Gingerich 1987 placental
Reptilia
 Squamata -
Lacertilia indet. Owen 1842 lizard
Aves
 Sandcoleiformes - Sandcoleidae
Eobucco sp. Feduccia and Martin 1976 bird
 Neornithes - Lithornithidae
Lithornis plebius n. sp. Houde 1988 bird
USNM 336534 - type (partial skeleton)
Lithornis promiscuus n. sp. Houde 1988 bird
USNM 336535 - type (partial skeleton)