Swift Current Creek (Eocene of Canada)

Where: Saskatchewan, Canada (50.2° N, 107.6° W: paleocoordinates 52.8° N, 94.7° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Cypress Hills Formation, Late/Upper Uintan (46.2 - 40.4 Ma)

• locality occurs "in the upper beds" of a 15 m section

• group of beds-level stratigraphic resolution

Environment/lithology: fluvial; sandstone and conglomerate

• environment of formation was "braided streams"
• "unconsolidated lens" in a formation of "sands, gravels, and conglomerates and sandstones with calcareous cement"

Size classes: macrofossils, mesofossils

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

Primary reference: J. E. Storer. 1984. Mammals of the Swift Current Creek Local Fauna (Eocene: Uintan), Saskatchewan. Natural History Contributions, Museum of Natural History, Regina 7:1-158 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 16626: authorized by John Alroy, entered by John Alroy on 18.02.1993

Creative Commons license: CC BY (attribution)

Taxonomic list

• includes a single quarry

•reported NISP of 1120, but 125 are of generically indeterminate taxa, for a total of 995

•type of "Trigenicus" mammifer mentioned by Frick 1937 and Scott 1940 probably from Calf Creek or another Chadronian locality

Reptilia
 Testudines -
Testudines indet.5 Batsch 1788 turtle
 Testudines - Trionychidae
cf. Apalone sp.5 Rafinesque 1832 softshell turtle
 Testudines - Baenidae
cf. Baena sp.5 Leidy 1870 turtle
 Testudines - Carettochelyidae
cf. Pseudanosteira sp.5 Clark 1932 turtle
 Testudines - Pantestudinidae
Testudinidae indet.5 Batsch 1788 turtle
 Testudines - Panemydidae
Emydidae indet.5 Rafinesque 1815 turtle
Mammalia
 Primates - Omomyidae
Omomyidae indet. Gazin 1958 tarsier
"sp. 2"
Omomys sp.6 Leidy 1869 tarsier
presumably "sp. 1" of Storer 1984
 Leptictida - Leptictidae
Leptictidae indet.1 Gill 1872 eutherian
Palaeictops borealis Russell 1965 eutherian
 Tribosphenida - Plagiomenidae
Thylacaelurus campester Storer 1984 placental
 Rodentia - Aplodontidae
Prosciurinae indet. Wilson 1949 mountain beaver
 Rodentia - Eomyidae
Protadjidaumo altilophus Storer 1984 rodent
Metanoiamys fugitivus1 Storer 1984 rodent
 Rodentia - Eutypomyidae
Janimus mirus Storer 1984 rodent
 Rodentia - Ischyromyidae
"Anonymus sp." = Churcheria6 Storer 2002 rodent
Pseudotomus cf. eugenei Burke 1935 rodent
Microparamys solidus Storer 1984 rodent
Microparamys dubius Wood 1949 rodent
Leptotomus sp. Matthew 1910 rodent
Leptotomus guildayi Black 1971 rodent
 Rodentia - Cylindrodontidae
 Lagomorpha - Leporidae
Leporidae indet., "Procaprolagus vusillus" = Desmatolagus vusillus
Leporidae indet. Fischer de Waldheim 1817 rabbit
"Procaprolagus vusillus" = Desmatolagus vusillus Storer 1984 rabbit
 Lipotyphla - Erinaceidae
Erinaceidae indet. Fischer von Waldheim 1817 hedgehog
 Lipotyphla - Geolabididae
Centetodon aztecus Lillegraven et al. 1981 placental
 Perissodactyla - Brontotheriidae
Brontotheriidae indet. Marsh 1873 brontothere
 Perissodactyla - Tapiridae
Dilophodon sp. Scott 1883 tapir
Colodon cf. kayi Hough 1955 tapir
 Perissodactyla - Equidae
Epihippus cf. gracilis Marsh 1871 horse
 Tribosphenida - Nyctitheriidae
Nyctitherium sp. Marsh 1872 placental
 Tribosphenida - Soricidae
Soricidae indet. Fischer 1814 shrew
"sp. A"
 Tribosphenida - Heterosoricidae
Domnina sp. Cope 1873 placental
 Tribosphenida - Apternodontidae
Oligoryctes sp. Hough 1956 placental
 Ferae - Viverravidae
Viverravus sp. Marsh 1872 placental
 Carnivora - Miacidae
Miocyon sp.3 Matthew 1909 carnivoran
 Carnivora -
Caniformia "indet. sp. 1" Kretzoi 1943 carnivoran
possibly includes Hesperocyon
Caniformia "indet. sp. 1" Kretzoi 1943 carnivoran
 Carnivora - Canidae
Hesperocyon sp.2 Scott 1890 canid
 Macroscelidea - Amphilemuridae
Sespedectes sp.6 Stock 1935 elephant shrew
 Chiroptera -
Chiroptera "indet. sp. 1" Blumenbach 1779 bat
Chiroptera "indet. sp. 2" Blumenbach 1779 bat
 Chiroptera - Molossidae
Wallia scalopidens Storer 1984 free-tailed bat
originally said to be a bat, but assigned to the Proscalopidae by Storer 1996
 Ungulata - Hyopsodontidae
Hyopsodus fastigatus n. sp.4 Russell and Wickenden 1933 condylarth
described by Russell and Wickenden 1933
 Ungulata - Homacodontidae
Mytonomeryx scotti Gazin 1955 even-toed ungulate
Auxontodon processus Storer 1984 even-toed ungulate
 Ungulata - Leptochoeridae
Ibarus ignotus Storer 1984 even-toed ungulate
 Ungulata - Oromerycidae
Oromerycidae indet. Gazin 1955 even-toed ungulate
 Ungulata - Agriochoeridae
Protoreodon pumilus Marsh 1875 agriochoerid
 Ungulata - Protoceratidae
Leptoreodon marshi Wortman 1898 protoceratid
 Insectivora -
Insectivora indet. Bowdich 1821 insectivoran
 Insectivora - Apatemyidae
Apatemys hendryi Robinson 1966 insectivoran
 Acreodi - Mesonychidae
Harpagolestes sp. Wortman 1901 condylarth
 Hyaenodonta -
Didelphodus serus Storer 1984 eutherian
 Theriiformes - Peradectidae
Nanodelphys cf. hunti1 Cope 1873 metatherian
Peradectes californicus Stock 1936 metatherian
 Theriiformes - Herpetotheriidae
"Copedelphys innominata" = Herpetotherium innominatum1, Herpetotherium knighti1, "Herpetotherium marsupium" = Peratherium marsupium1
"Copedelphys innominata" = Herpetotherium innominatum1 Simpson 1928 marsupial
Herpetotherium knighti1 McGrew et al. 1959 marsupial
"Herpetotherium marsupium" = Peratherium marsupium1 Troxell 1923 marsupial
 Multituberculata - Neoplagiaulacidae
Ectypodus lovei Sloan 1966 multituberculate