Roche Percée (Paleocene of Canada)

Also known as UAR2; UAR-2; UAR2L

Where: Saskatchewan, Canada (49.1° N, 102.7° W: paleocoordinates 53.8° N, 80.1° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Ravenscrag Formation, Ti4 (61.7 - 56.8 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: alluvial fan; fine-grained, gray sandstone and siltstone

• formation's environment was an "alluvial plain" (Scott 2006)
• formation consists "of fine-grained buff to grey sandstone, siltstones, and shale, with extensive lignite beds" (Scott 2006)

Size class: mesofossils

Collected by D. W. Krause

Collection methods: bulk, surface (float), sieve

• collected "in overburden that had been stripped during mining of therma coal" (Scott 2006)

Primary reference: R. C. Fox. 1990. The succession of Paleocene mammals in western Canada. Geological Society of America Special Paper 243:51-70 [J. Alroy/J. Alroy/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 14978: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Roger Benson, Philip Mannion and Patricia Holroyd

Creative Commons license: CC BY (attribution)

Taxonomic list

• this is a composite of several localities
Mammalia
 Proteutheria - Palaeoryctidae
Palaeoryctes sp.9 Matthew 1913 eutherian
Pararyctes pattersoni9 Van Valen 1966 eutherian
 Macroscelidea -
"Diacocherus cf. meizon" = Adunator meizon Gingerich 1983 elephant shrew
Litocherus cf. zygeus9 Gingerich 1983 elephant shrew
Litocherus lacunatus Gazin 1956 elephant shrew
 Ferae - Viverravidae
Viverravidae indet.9 Wortman and Matthew 1899 placental
"gen. et sp. indet"
Protictis paralus9 Holtzman 1978 placental
Didymictis dellensis9 Dorr 1952 placental
Didymictis cf. dellensis9 Dorr 1952 placental
Raphictis sp. Gingerich and Winkler 1985 placental
two forms, said to be new
Raphictis sp.9 Gingerich and Winkler 1985 placental
 Tribosphenida - Phenacodontidae
Phenacodus magnus9 Thewissen 1990 condylarth
Ectocion cf. cedrus9 Thewissen 1990 condylarth
 Procreodi - Arctocyonidae
Arctocyon corrugatus9 Cope 1883 condylarth
"Arctocyon mumak" = Arctocyon acrogenius9 Gazin 1956 condylarth
Thryptacodon australis Simpson 1935 condylarth
Chriacus cf. baldwini9 Cope 1882 condylarth
 Soricomorpha - Nyctitheriidae
Nyctitherium sp.9 Marsh 1872 placental
Leptacodon sp.9 Matthew and Granger 1921 placental
 Placentalia -
"Lipotyphla indet." = Eulipotyphla9
"Lipotyphla indet." = Eulipotyphla9 placental
"gen. et sp. indet"
 Tribosphenida - Erinaceidae
Litolestes cf. ignotus Jepsen 1930 hedgehog
Oncocherus krishtalkai10 Scott 2006 hedgehog
 Tribosphenida - Pantolestoidae
Propalaeosinopa sp. Simpson 1927 placental
Palaeosinopa reclusum n. sp.8 Rankin 2014 placental
Bessoecetor pilodontus9 Secord 2008 placental
Bessoecetor krausei n. sp.8 Rankin 2014 placental
Aatotomus placochton n. gen. n. sp.8 Rankin 2014 placental
Aatotomus cf. placochton8 Rankin 2014 placental
 Primates - Micromomyidae
"Micromomys vossae n. sp." = Foxomomys vossae
"Micromomys vossae n. sp." = Foxomomys vossae Krause 1978 primate
 Primates - Carpolestidae
Carpodaptes stonleyi n. sp.1 Fox 2002 primate
 Primates - Plesiadapidae
Plesiadapis churchilli Gingerich 1975 primate
 Primates - Paromomyidae
Ignacius frugivorus Matthew and Granger 1921 primate
 Cimolesta - Apatemyidae
Unuchinia dysmathes9 Holtzman 1978 eutherian
Labidolemur soricoides9 Matthew and Granger 1921 eutherian
 Cimolesta - Titanoideidae
Titanoides cf. primaevus9 Gidley 1917 pantodont
 Cimolesta - Cyriacotheriidae
Cyriacotherium cf. argyreum Rose and Krause 1982 pantodont
described by Rose and Krause 1982: both UAR2 and UAR2a
 Tribosphenida - Peradectidae
 Multituberculata - Ptilodontidae
Ptilodus kummae n. sp. Krause 1977 multituberculate
Prochetodon foxi Krause 1987 multituberculate
 Multituberculata - Neoplagiaulacidae
Ectypodus cf. powelli Jepsen 1940 multituberculate
Neoplagiaulax hunteri Simpson 1936 multituberculate
Neoplagiaulax cf. hazeni Jepsen 1940 multituberculate
Mimetodon silberlingi Simpson 1935 multituberculate
Mesodma pygmaea Sloan 1987 multituberculate
 Multituberculata - Microcosmodontidae
Microcosmodon conus Jepsen 1930 multituberculate
Reptilia
 Choristodera -
Champsosaurus gigas2 Erickson 1972 choristodere
UALVP 33921 (skull and vertebrae); 'Near Roche Perceé [UAR2L]'
Amphibia
 Proteida - Batrachosauroididae
Opisthotriton kayi4 Auffenberg 1961 salamander
 Caudata - Urodela
Urodela indet.4 salamander
Amphiumidae indet.3 Gray 1825 salamander
UALVP 14316 (incomplete left dentary). Originally reported by Naylor (1978), who believed the specimen came from the Bug Creek Anthills and referred it to Proamphiuma cretacea, but subsequent examination of the original accession record indicates it came from a Roche Percée locality (Gardner 2003)
Necturus krausei n. sp.5 Naylor 1978 mudpuppy
UAR 2g
Cryptobranchus saskatchewanensis n. sp.6 Naylor 1981 hellbender
cf. Scapherpeton sp.4 Cope 1876 salamander
Piceoerpeton willwoodense7 Meszoely 1967 salamander
"Roche Perceé sites"; atlantes UALVP 11766-11772 and trunk vertebrae UALVP 11757-11765 (originally reported as “UA 14809-14815” and “UA 14800-14808”, respectively)
 Salientia -
Anura indet.4 Fischer von Waldheim 1813 frog