McKeever Ranch, Harley's Point (Paleocene of the United States)

Also known as UCMP V-77087, V77087

Where: Garfield County, Montana (47.6° N, 107.0° W: paleocoordinates 53.9° N, 81.8° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Tullock Member (Fort Union Formation), Pu1 (66.0 - 63.3 Ma)

• early Puercan (Pu1), lowermost Palaeocene Tullock Member, Fort Union Formation

• bed-level stratigraphic resolution

Environment/lithology: fine channel fill; silty sandstone

Size classes: macrofossils, mesofossils

Reposited in the UCMP

Collection methods: bulk, surface (float), sieve,

Primary reference: J. D. Archibald. 1982. A study of Mammalia and geology across the Cretaceous-Tertiary boundary in Garfield County, Montana. University of California Publications in Geological Sciences 122:1-286 [J. Alroy/J. Alroy/M. Carrano]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 14762: authorized by John Alroy, entered by John Alroy on 15.05.2002, edited by Philip Mannion

Creative Commons license: CC BY (attribution)

Taxonomic list

• same paleomag as McKeever Ranch 1
Osteichthyes
 Acipenseriformes - Acipenseridae
Acipenseridae indet. Bonaparte 1831 ray-finned fish
Actinopteri
 Amiiformes - Amiidae
Amiidae indet. Huxley 1861 bowfin
 Lepisosteiformes - Lepisosteidae
Lepisosteidae indet. Cuvier 1825 gar
 Teleostei -
Teleostei indet. Müller 1846
Amphibia
 Temnospondyli - Albanerpetontidae
Albanerpeton sp. Estes and Hoffstetter 1976 tetrapod
 Caudata - Urodela
Scapherpeton sp. Cope 1876 salamander
Reptilia
 Squamata - Chamopsiidae
Chamopsiidae indet. Denton and O'Neill 1995 squamates
 Theropoda -
Theropoda indet. Marsh 1881 theropod
Tooth of a theropod dinosaur - presumably reworked
 Crocodylia -
Crocodylia indet. Owen 1842 crocodilian
 Choristodera - Champsosauridae
Champsosauridae indet. Cope 1876 champsosaur
 Testudines - Trionychidae
Trionychidae indet. softshell turtle
 Testudines - Chelydridae
 Testudinata -
Compsemys sp. Leidy 1856 turtle
Mammalia
 Primates - Purgatoriidae
Purgatorius mckeeveri Wilson Mantilla et al. 2021 primate
UCMP 150021
Purgatorius janisae Van Valen 1994 primate
UCMP 150018 and 192398
 Procreodi - Arctocyonidae
Protungulatum donnae Sloan and Van Valen 1965 condylarth
Mimatuta minuial Van Valen 1978 condylarth
 Theriamorpha - Herpetotheriidae
Thylacodon montanensis Williamson et al. 2012 marsupial