Turtle Ridge locality (Cretaceous of the United States)

Where: Slope County, North Dakota (46.3° N, 104.0° W: paleocoordinates 52.7° N, 76.8° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Hell Creek Formation, Maastrichtian (72.1 - 66.0 Ma)

• Hell Creek Formation, Late Cretaceous (Maastrichtian)

• member-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected by Marmarth Research Foundation in 1997-2011

Collection methods: quarrying, surface (in situ),

• MRF, Marmarth Research Foundation, Marmarth, North Dakota, U.S.A.

Primary reference: N. Vitek. 2012. Giant fossil soft-shelled turtles of North America. Palaeontologia Electronica 15(1):13A [R. Benson/R. Benson]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 141582: authorized by Roger Benson, entered by Roger Benson on 29.03.2013, edited by Evangelos Vlachos

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Testudines - Trionychidae
Gilmoremys lancensis1 Gilmore 1916 softshell turtle
DMNH 98785
"Trionyx" beecheri1 Hay 1904 softshell turtle
provisionally
Axestemys infernalis1 Joyce et al. 2019 softshell turtle
MRF 266, skull
 Testudines - Baenidae
Baenidae indet.1 Cope 1882 turtle
new species
Saxochelys gilberti n. gen. n. sp.2 Lyson et al. 2019 turtle
DMNH EPV.96000, an articulated skull, mandible, and hyoid apparatus
 Testudines - Panchelydridae
cf. Chelydridae indet.1 turtle
DMNH 130940