WU-223 (Eocene of the United States)

Where: Uintah County, Utah (40.1° N, 109.3° W: paleocoordinates 42.9° N, 98.2° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Ui3 mammal zone, Myton Member (Uinta Formation), Uintan (46.2 - 39.7 Ma)

• reported as 332 meters in measured section of Townsend et al. 2006. Stratigraphic distribution of upper Middle Eocene vertebrate localities in the eastern Uinta Basin, Utah, with comment on Uintan biostratigraphy. Mountain Geologist 2006 43:115–134; depicted as high in Uinta C and Myton Mbr. in Adrian et al. 2021

Environment/lithology: terrestrial; mudstone

• gray and green-gray mudstone paleosols

Size class: macrofossils

Primary reference: H. F. Smith, J. H. Hutchison, K. E. B. Townsend, B. Adrian and D. Jager. 2017. Morphological variation, phylogenetic relationships, and geographic distribution of the Baenidae (Testudines), based on new specimens from the Uinta Formation (Uinta Basin), Utah (USA). PLoS ONE 12(7):e0180574 [P. Holroyd/P. Holroyd]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 186896: authorized by Patricia Holroyd, entered by Patricia Holroyd on 07.07.2017, edited by Evangelos Vlachos

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Pisces
  -
"Pisces indet." = Osteichthyes2
"Pisces indet." = Osteichthyes2 Huxley 1880 bony fish
Mammalia
  -
Mammalia indet.2
Mammalia indet.2 Linnaeus 1758 mammal
 Perissodactyla - Tapiridae
Tapiridae indet.2
Tapiridae indet.2 Gray 1821 tapir
 Perissodactyla - Brontotheriidae
Brontotheriidae indet.2
Brontotheriidae indet.2 Marsh 1873 brontothere
Reptilia
 Testudines - Carettochelyidae
Anosteira pulchra1
Anosteira pulchra1 Clark 1932 turtle
 Testudines - Trionychidae
Trionychidae indet.2
Trionychidae indet.2 Gray 1825 softshell turtle
 Testudines - Geoemydidae
Bridgeremys pusilla2, Echmatemys callopyge2
Bridgeremys pusilla2 Hay 1908 turtle
UMNH VP 26537 Cf. neural 4 and shell fragments
Echmatemys callopyge2 Hay 1908 turtle
 Testudines - Testudinidae
Testudinidae indet.2, Hesperotestudo sp.2
Testudinidae indet.2 Batsch 1788 turtle
Hesperotestudo sp.2 Williams 1950 turtle
 Testudinata - Baenidae
Chisternon undatum2, Baena arenosa
Chisternon undatum2 Leidy 1871 turtle
Baena arenosa Leidy 1870 turtle
Echmatemys wyomingensis
  -
Echmatemys wyomingensis2
1Adrian et al. 2020; 2Adrian et al. 2021