Swift Current Creek: Late Uintan, Canada

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia - Baenidae
cf. Baena sp. Leidy 1870
Hutchison and Storer 1998
Reptilia - Testudines
Testudines indet. Batsch 1788
Hutchison and Storer 1998
Reptilia - Testudines - Emydidae
Emydidae indet. Rafinesque 1815
Hutchison and Storer 1998
Reptilia - Testudines - Testudinidae
Testudinidae indet. Batsch 1788
Hutchison and Storer 1998
Reptilia - Testudines - Trionychidae
cf. Apalone sp. Rafinesque 1832
Hutchison and Storer 1998
Reptilia - Testudines
cf. Pseudanosteira sp. Clark 1932
Hutchison and Storer 1998
Mammalia - Multituberculata - Neoplagiaulacidae
Ectypodus lovei (Sloan 1966)
6 specimens
Mammalia - Apatemyidae
Apatemys hendryi Robinson 1966
1 specimen
Mammalia - Condylarthra - Hyopsodontidae
Hyopsodus fastigatus n. sp. Russell and Wickenden 1933
Gazin 1968 106 specimens
described by Russell and Wickenden 1933
Mammalia - Insectivora
Insectivora indet. Bowdich 1821
1 specimen
Mammalia - Chiroptera
Chiroptera informal indet. sp. 1
8 specimens
Chiroptera informal indet. sp. 2
1 specimen
Mammalia - Chiroptera - Molossidae
Wallia scalopidens Storer 1984
6 specimens
originally said to be a bat, but assigned to the Proscalopidae by Storer 1996
Mammalia - Plagiomenidae
Thylacaelurus campester Storer 1984
9 specimens
Mammalia - Primates - Plesiadapidae
Trogolemur storeri n. sp. Perry et al. 2023
Perry et al. 2023 3 specimens
Mammalia - Primates - Omomyidae
Omomyidae indet. Gazin 1958
1 specimen
"sp. 2"
unclassified
Viverravus sp. Marsh 1872
1 specimen
    = Creodonta indet.
Tomiya et al. 2021
"affinity with machaeroidines or, less convincingly, hyaenodontids with hypercarnivorous tendency"
Mammalia - Primates - Omomyidae
Omomys sp. Leidy 1869
Storer 1996 2 specimens
presumably "sp. 1" of Storer 1984
    = Saskomomys lindsayorum n. sp. Perry et al. 2023
Perry et al. 2023
Walshina mcgrewi (Robinson 1968)
Perry et al. 2023 1 specimen
Mammalia - Rodentia - Cylindrodontidae
Pseudocylindrodon citofluminis Storer 1984
6 specimens
Mammalia - Rodentia - Aplodontidae
Prosciurinae indet. Wilson 1949
2 specimens
Mammalia - Rodentia - Eomyidae
Namatomys fugitivus Storer 1984
156 specimens
    = Metanoiamys fugitivus Storer 1984
Alroy 2002
Protadjidaumo altilophus Storer 1984
29 specimens
Mammalia - Rodentia - Eutypomyidae
Janimus mirus Storer 1984
28 specimens
Mammalia - Rodentia - Ischyromyidae
Microparamys dubius (Wood 1949)
8 specimens
Microparamys solidus Storer 1984
27 specimens
Anonymus sp. Storer 1988
Storer 1996
Leptotomus sp. Matthew 1910
10 specimens
Leptotomus guildayi Black 1971
1 specimen
Pseudotomus cf. eugenei (Burke 1935)
9 specimens
Mammalia - Lagomorpha - Leporidae
Leporidae indet. Fischer de Waldheim 1817
1 specimen
Procaprolagus vusillus Storer 1984
111 specimens
Mammalia - Nyctitheriidae
Nyctitherium sp. Marsh 1872
1 specimen
Mammalia - Oligoryctidae
Oligoryctes sp. Hough 1956
4 specimens
Mammalia - Soricidae
Soricidae indet. Fischer 1814
12 specimens
"sp. A"
Domnina sp. Cope 1873
1 specimen
Mammalia - Geolabididae
Centetodon aztecus Lillegraven et al. 1981
27 specimens
Mammalia - Erinaceidae
Erinaceidae indet. Fischer von Waldheim 1817
12 specimens
Mammalia - Sespedectidae
Adapisoricidae indet. Schlosser 1887
4 specimens
    = Sespedectes sp. Stock 1935
Storer 1996
Mammalia - Acreodi - Mesonychidae
Harpagolestes sp. Wortman 1901
1 specimen
Mammalia - Carnivora
Caniformia informal indet. sp. 1
5 specimens
possibly includes Hesperocyon
Caniformia informal indet. sp. 1
4 specimens
Mammalia - Carnivora - Canidae
Peradectes mcgrewi (Russell 1972)
1 specimen
    = Hesperocyon sp. Scott 1890
Bryant 1991
Bryant's i.d. is omitted by Storer 1996 for unknown reasons DUPLICATE REF 1139 or 1140 or 1145
Mammalia - Carnivora - Miacidae
Prodaphaenus scotti Wortman and Matthew 1899
1 specimen
    = Miocyon cf. scotti Wortman and Matthew 1899
Alroy 2002
    = Miocyon sp. Matthew 1909
Friscia and Rasmussen 2010
an unnamed, large species
Mammalia - Perissodactyla - Equidae
Epihippus cf. gracilis (Marsh 1871)
8 specimens
Mammalia - Perissodactyla - Tapiridae
Dilophodon sp. Scott 1883
1 specimen
Colodon cf. kayi (Hough 1955)
8 specimens
Mammalia - Perissodactyla - Brontotheriidae
Brontotheriidae indet. (Marsh 1873)
2 specimens
Mammalia - Oromerycidae
Oromerycidae indet. Gazin 1955
64 specimens
Mammalia - Agriochoeridae
Protoreodon pumilus (Marsh 1875)
25 specimens
Mammalia - Protoceratidae
Leptoreodon marshi Wortman 1898
111 specimens
(4 measurements)
Mammalia - Leptochoeridae
Ibarus ignotus Storer 1984
26 specimens
Mammalia - Homacodontidae
Auxontodon processus Storer 1984
13 specimens
Mytonomeryx scotti Gazin 1955
5 specimens
Mammalia - Leptictidae
Leptictis sp. Leidy 1868
19 specimens
    = Leptictidae indet. Gill 1872
Alroy 2002
Palaeictops borealis (Russell 1965)
10 specimens
Didelphodus serus Storer 1984
12 specimens
(1 measurement)
Mammalia
Peradectes cf. minutus (McGrew 1937)
4 specimens
    = Nanodelphys cf. hunti Cope 1873
Alroy 2002
Peradectes californicus (Stock 1936)
5 specimens
Peratherium marsupium (Troxell 1923)
76 specimens
    = Herpetotherium marsupium Troxell 1923
Alroy 2002
Peratherium innominatum Simpson 1928
91 specimens
    = Copedelphys innominata Simpson 1928
Alroy 2002
Peratherium knighti McGrew et al. 1959
36 specimens
    = Herpetotherium knighti McGrew et al. 1959
Alroy 2002
see common names

Geography
Country:Canada State/province:Saskatchewan
Coordinates: 50.2° North, 107.6° West (view map)
Paleocoordinates:52.8° North, 94.7° West
Basis of coordinate:based on nearby landmark
Altitude:792 meters
Geographic resolution:outcrop
Time
Period: Paleogene Epoch: Eocene
10 m.y. bin: Cenozoic 2-3
*Period:Early/Lower Tertiary *Epoch:Late/Upper Eocene
*Local age/stage:Late/Upper Uintan
Key time interval: Late Uintan
Age range of interval: 46.2 - 39.7 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Cypress Hills
Stratigraphic resolution:group of beds
Stratigraphy comments: locality occurs "in the upper beds" of a 15 m section
Lithology and environment
Primary lithology: sandstone
Secondary lithology: conglomerate
Lithology description: "unconsolidated lens" in a formation of "sands, gravels, and conglomerates and sandstones with calcareous cement"
Environment:fluvial indet.
Geology comments: environment of formation was "braided streams"
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Disassociated major elements:some
Disassociated minor elements:many
Collection methods and comments
Collection methods:bulk,surface (float),sieve,field collection,survey of museum collection
Collection size:997 specimens
Reason for describing collection:taxonomic analysis
Taxonomic list comments: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
Metadata
Database number:16626
Authorizer:J. Alroy, P. Holroyd Enterer:J. Alroy, P. Holroyd
Modifier:J. Alroy Research group:vertebrate
Created:1993-02-18 00:00:00 Last modified:2002-09-27 18:50:35
Access level:the public Released:1993-02-18 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:
3305.5% 26080J. 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]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
1139 H. N. Bryant. 1991. Reidentification of the Chadronian supposed didelphid marsupial Alloeodectes mcgrewi as part of the deciduous dentition of the canid Hesperocyon. Canadian Journal of Earth Sciences 28 [J. Alroy/J. Alroy/J. Ju]
36145 A. R. Friscia and D. T. Rasmussen. 2010. Middle Eocene Carnivoramorpha of the Uinta Basin, Utah. Annals of Carnegie Museum 79(1):51-63 [J. Alroy/J. Alroy]
16195% 40780C. L. Gazin. 1968. A study of the Eocene condylarthran mammal Hyopsodus. Smithsonian Miscellaneous Collections 153(4):1-90 [J. Alroy/J. Alroy/J. Head]
7617 J. H. Hutchison and J. E. Storer. 1998. Turtles from the middle Eocene (Uintan) of Saskatchewan, Canada. PaleoBios 18(2&3):36-39 [J. Alroy/J. Alroy/J. Alroy]
85653 J. M. G. Perry, A. R. Dutchak, and J. M. Theodor. 2023. New primates from the Eocene of Saskatchewan, Canada: Revision of the primates from the Cypress Hills Formation with description of new taxa. Palaeontologia Electronica 26(2):1-19 [P. Holroyd/P. Holroyd]
3318 J. E. Storer. 1996. Eocene-Oligocene faunas of the Cypress Hills Formation, Saskatchewan. In D. R. Prothero and R. J. Emry (eds.), The Terrestrial Eocene-Oligocene Transition in North America 240-261 [J. Alroy/J. Alroy/J. Marcot]
78605 S. Tomiya, S. P. Zack, M. Spaulding and J. J. Flynn. 2021. Carnivorous mammals from the middle Eocene Washakie Formation, Wyoming, USA, and their diversity trajectory in a post-warming world. Journal of Paleontology Memoir 95(82):1-115 [P. Holroyd/P. Holroyd]