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
Osteichthyes
 Proteida - Batrachosauroididae
Opisthotriton kayi9 Auffenberg 1961 tetrapod
 Salientia -
Anura indet.9 Fischer von Waldheim 1813 frog
 Caudata - Urodela
Urodela indet.9 salamander
Reptilia
 Choristodera -
Simoedosaurus sp.8 Gervais 1877 choristodere
UALVP 33927 (partial left dentary)
Mammalia
 Cimolesta - Cimolestidae
"Cimolestes cf. simpsoni" = Puercolestes simpsoni, Procerberus sp.
"Cimolestes cf. simpsoni" = Puercolestes simpsoni Reynolds 1936 eutherian
Procerberus sp. Sloan and Van Valen 1965 eutherian
said to be new
 Cimolesta - Palaeoryctidae
Palaeoryctes sp.7 Matthew 1913 eutherian
presumably includes additional palaeoryctid of Fox
 Leptictida - Leptictidae
Prodiacodon sp. Matthew 1929 eutherian
said to be new
 Primates -
Purgatorius coracis n. sp.5 Fox and Scott 2011 primate
not P. janisae and possibly P. unio: Van Valen 1994
 Condylarthra - Hyopsodontidae
? Litaletes sp. Simpson 1935 condylarth
Bubogonia saskia n. sp. Johnston and Fox 1984 condylarth
 Tribosphenida - Periptychidae
Oxyacodon cf. agapetillus Cope 1884 condylarth
Anisonchus cf. oligistus Gazin 1941 condylarth
 Ferae -
Carnivora indet.6 Bowditch 1821 carnivoran
UALVP 50993 (isolated left m1) and UALVP 50994 (isolated right m1)
 Carnivora -
Ravenictis krausei n. sp.7 Fox and Youzwyshyn 1994 carnivoran
presumably includes Carnivora indet. of Fox, which was said to be a new genus
 Macroscelidea - Apheliscidae
Litomylus orthronepius n. sp. Johnston and Fox 1984 elephant shrew
 Tribosphenida - Arctocyonidae
Carcinodon aquilonius Russell 1974 condylarth
Loxolophus schizophrenus n. sp. Johnston and Fox 1984 condylarth
Baioconodon cf. denverensis Gazin 1941 condylarth
 Acreodi - Triisodontidae
? Eoconodon sp. Matthew and Granger 1921 eutherian
 Acreodi -
Oxyclaenus corax n. sp. Johnston and Fox 1984 eutherian
 Multituberculata -
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 - Neoplagiaulacidae
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
Mesodma sp.4 Jepsen 1940 multituberculate
Mesodma formosa3 Marsh 1889 multituberculate
may include additional Mesodma sp., said to be new
Neoplagiaulax kremnus n. sp. Johnston and Fox 1984 multituberculate
Xyronomys sp. Rigby 1980 multituberculate
 Multituberculata - Ptilodontidae
Ptilodus cf. tsosiensis Sloan 1981 multituberculate
 Multituberculata - Microcosmodontidae
Microcosmodon arcuatus n. sp. Johnston and Fox 1984 multituberculate
 Multituberculata - Taeniolabididae
Catopsalis sp.2 Cope 1882 multituberculate