WU-123 (Eocene of the United States)

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

• Paleocoordinates: 47.2° N, 89.3° W (Wright 2013)

• 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 366 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

• red, gray mudstones

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 186895: authorized by Patricia Holroyd, entered by Patricia Holroyd on 07.07.2017, edited by Evangelos Vlachos

Creative Commons license: CC0 (CC0)

Taxonomic list

Mammalia
 Placentalia -
Artiodactyla indet.2 even-toed ungulate
Reptilia
 Testudines - Geoemydidae
Bridgeremys pusilla2 Hay 1908 turtle
UMNH VP 27629 Neurals 3, 4 and 7, partial right costals 3 and 4, partial neural 6, left and right peripheral 8 with bore marks, partial plastron (only entoplastron and left xiphiplastron complete), 27626 Left epiplastron, partial right hypoplastron, partial left xiphiplastron, left hypo-, xiphi- , and partial hyoplastron, partial right xiphiplastron, neurals 3–7 and 9, partial left costals 3–7, partial right costals 5–6, partial right hyoplastron, partial left costal 1, 27627 Cf. left peripheral 8 and shell fragments, 32136 Cf. partial right costal 4, right peripheral 10, partial left epiplastron, costal fragments with bore marks, partial right costal 6, and shell fragments, 26537 Cf. neural 4 and shell fragments
 Testudines - Carettochelyidae
Anosteira pulchra1 Clark 1932 turtle
 Testudinata - Baenidae
Baena arenosa Leidy 1870 turtle