low buttes, northeast of Twin Buttes (Eocene of the United States)

Also known as Juncitarsus type

Where: Sweetwater County, Wyoming (41.2° N, 109.7° W: paleocoordinates 44.0° N, 98.5° W)

• coordinate stated in text

• local area-level geographic resolution

When: Bridger Formation, Middle Eocene (48.6 - 37.2 Ma)

• very low in formation; earliest middle Eocene

• formation-level stratigraphic resolution

Environment/lithology: terrestrial; yellow siliciclastic sediments and lithified, gray, green sandstone

• "yellow layer near base of buttes, beneath a hard grayish green sandstone"

Size class: macrofossils

Collected by C. L. Gazin, F. L. Pearce & G. F. Sternberg in 1946-1947; reposited in the USNM

Primary reference: S. L. Olson and A. Feduccia. 1980. Relationships and evolution of flamingos (Aves: Phoenicopteridae). Smithsonian Contributions to Zoology 316:1-73 [M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 97759: authorized by Matthew Carrano, entered by Hallie Street on 27.08.2010, edited by Matthew Carrano and Terri Cleary

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Squamata - Anguidae
cf. Glyptosaurus sylvestris Marsh 1871 squamates
USNM 16654, partial skeleton
Aves
  -
Aves indet. Linnaeus 1758 bird
USNM 244323
 Neornithes -
Juncitarsus gracillimus n. gen. n. sp.
Juncitarsus gracillimus n. gen. n. sp. Olson and Feduccia 1980 bird
USNM 244318-22, 244324-38