PBDB Collection

Rav W-1 Horizon (Paleocene of Canada)

Also known as Medicine Hat Brick and Tile (MHBT) Quarry (in part)

Where: Saskatchewan, Canada (49.5° N, 109.2° W: paleocoordinates 56.2° N, 83.4° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Ravenscrag Formation, Puercan (66.0 - 63.3 Ma)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithified, gray sandstone and pebbly conglomerate

• "resistant cemented greyish sand with discontinuous fossiliferous clay pebble conglomerate at base"

Size class: mesofossils

Collected by P. Johnston

Collection methods: bulk, sieve,

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: taxonomic analysis

PaleoDB collection 14768: 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

• directly overlies Long Fall Horizon, but there is no evidence that any of the species are reworked from Cretaceous sediments. Manuscript appears to post-date Fox 1989; supersedes Johnston and Fox 1984

Show authors, comments, and common names

Mammalia
Cimolesta - Cimolestidae	Procerberus sp., "Cimolestes cf. simpsoni" = Puercolestes simpsoni Procerberus sp. Sloan and Van Valen 1965 eutherian said to be new "Cimolestes cf. simpsoni" = Puercolestes simpsoni Reynolds 1936 eutherian
Condylarthra - Hyopsodontidae	Bubogonia saskia n. sp., ? Litaletes sp. Bubogonia saskia n. sp. Johnston and Fox 1984 condylarth ? Litaletes sp. Simpson 1935 condylarth
Macroscelidea - Apheliscidae	Litomylus orthronepius n. sp. Litomylus orthronepius n. sp. Johnston and Fox 1984 elephant shrew
Acreodi - Triisodontidae	? Eoconodon sp. ? Eoconodon sp. Matthew and Granger 1921 placental
Tribosphenida - Periptychidae	Oxyacodon cf. agapetillus, Anisonchus cf. oligistus Oxyacodon cf. agapetillus Cope 1884 condylarth Anisonchus cf. oligistus Gazin 1941 condylarth
Procreodi - Arctocyonidae	Baioconodon cf. denverensis, Carcinodon aquilonius, Loxolophus schizophrenus n. sp., Oxyclaenus corax n. sp. Baioconodon cf. denverensis Gazin 1941 condylarth Carcinodon aquilonius Russell 1974 condylarth Loxolophus schizophrenus n. sp. Johnston and Fox 1984 condylarth Oxyclaenus corax n. sp. Johnston and Fox 1984 condylarth
Placentalia -	Carnivora indet.⁷ Carnivora indet.⁷ Bowdich 1821 carnivoran UALVP 50993 (isolated left m1) and UALVP 50994 (isolated right m1)
Carnivora -	Ravenictis krausei n. sp.⁸ Ravenictis krausei n. sp.⁸ Fox and Youzwyshyn 1994 carnivoran presumably includes Carnivora indet. of Fox, which was said to be a new genus
Primates - Purgatoriidae	Purgatorius coracis n. sp.⁶ Purgatorius coracis n. sp.⁶ Fox and Scott 2011 primate not P. janisae and possibly P. unio: Van Valen 1994
Proteutheria - Palaeoryctidae	Palaeoryctes sp.⁸ Palaeoryctes sp.⁸ Matthew 1913 eutherian presumably includes additional palaeoryctid of Fox
Leptictida - Leptictidae	Prodiacodon sp. Prodiacodon sp. Matthew 1929 eutherian said to be new
Multituberculata - Microcosmodontidae	Microcosmodon arcuatus n. sp. Microcosmodon arcuatus n. sp. Johnston and Fox 1984 multituberculate
Multituberculata -	Cimexomys cf. minor Cimexomys cf. minor Sloan and Van Valen 1965 multituberculate
Multituberculata - Eucosmodontidae	"Cimexomys cf. gratus" = Stygimys gratus¹, Stygimys camptorhiza n. sp. "Cimexomys cf. gratus" = Stygimys gratus¹ Jepsen 1930 multituberculate Stygimys camptorhiza n. sp. Johnston and Fox 1984 multituberculate
Multituberculata - Taeniolabididae	Catopsalis sp.³ Catopsalis sp.³ Cope 1882 multituberculate
Multituberculata - Ptilodontidae	Ptilodus cf. tsosiensis Ptilodus cf. tsosiensis Sloan 1981 multituberculate
Multituberculata - Neoplagiaulacidae	Neoplagiaulacidae indet., Parectypodus sp., Parectypodus armstrongi n. sp., Ectypodus sp., Xyronomys sp., Neoplagiaulax kremnus n. sp., Mesodma sp.⁵, Mesodma formosa⁴ Neoplagiaulacidae indet. Ameghino 1890 multituberculate said to be a new genus Parectypodus sp. Jepsen 1930 multituberculate Parectypodus armstrongi n. sp. Johnston and Fox 1984 multituberculate Ectypodus sp. Matthew and Granger 1921 multituberculate Xyronomys sp. Rigby 1980 multituberculate Neoplagiaulax kremnus n. sp. Johnston and Fox 1984 multituberculate Mesodma sp.⁵ Jepsen 1940 multituberculate Mesodma formosa⁴ Marsh 1889 multituberculate may include additional Mesodma sp., said to be new
Reptilia
Choristodera - Simoedosauridae	Simoedosauridae indet.² Simoedosauridae indet.² Lemone 1884 choristodere UALVP 33927 (partial left dentary)
Amphibia
Proteida - Batrachosauroididae	Opisthotriton kayi⁹ Opisthotriton kayi⁹ Auffenberg 1961 salamander
Caudata - Urodela	Urodela indet.⁹ Urodela indet.⁹ salamander
Salientia -	Anura indet.⁹ Anura indet.⁹ Fischer von Waldheim 1813 frog

¹Alroy 2002; ²Brownstein 2022; ³Buckley 1995; ⁴Fox 1989; ⁵Fox 2002; ⁶Fox and Scott 2011; ⁷Fox et al. 2010; ⁸Fox and Youzwyshyn 1994; ⁹Gardner and DeMar 2013