Topham (Miocene of Canada)

Where: Saskatchewan, Canada (49.6° N, 109.0° W: paleocoordinates 50.4° N, 105.0° W)

• coordinate based on nearby landmark

When: Cypress Hills Formation, Hemingfordian (20.4 - 16.0 Ma)

Environment/lithology: terrestrial

Size classes: macrofossils, mesofossils

Primary reference: T. Skwara. 1988. Mammals of the Topham Local Fauna: Early Miocene (Hemingfordian), Cypress Hills Formation, Saskatechewan. Natural History Contributions 9:1-169 [J. Alroy/J. Alroy/J. Marcot]more details

PaleoDB collection 18003: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

• NISP 307 (valid genus or species level i.d.s only)
"? Paradjidaumo sp.", NISP 4, is possibly reworked from underlying Chadronian deposits that yield P. hansonorum

"Heliscomys cf. tenuiceps" (NISP 5): compared to the florentiamyids Ecclesimus tenuiceps and Kirkomys schlaikjeri, but Korth et al. 1990 specifically state that no florentiamyids are present
Mammalia
 Rodentia - Cricetidae
Yatkolamys edwardsi Martin and Corner 1980 mouse
Leidymys cf. blacki Macdonald 1963 mouse
 Rodentia - Sciuridae
"Tamiini indet." = Marmotini squirrel
"Tamias" sp., can't determine from figures and descriptions what this is, although it seems definitely not to be Nototamias hulberti or Tamias ateles: JA 1.7.96
Protospermophilus sp. Gazin 1930 squirrel
small
Protospermophilus kelloggi Black 1963 squirrel
Miospermophilus wyomingensis Black 1963 squirrel
Sciurion campestre n. gen. n. sp. Skwara 1986 squirrel
 Rodentia -
Geomyoidea indet.1 Bonaparte 1845 rodent
Geomyoidea indet.1 Bonaparte 1845 rodent
 Rodentia - Eomyidae
Pseudotheridomys sp. Schlosser 1926 rodent
Leptodontomys sp. Shotwell 1956 rodent
 Rodentia - Geomyidae
Geomyidae indet. Bonaparte 1845 pocket gopher
 Rodentia - Heliscomyidae
Heliscomys sp.4 Cope 1873 rodent
 Rodentia - Heteromyidae
Stratimus strobeli3 Korth et al. 1990 rodent
"Proheteromys sp., intermediate"
 Rodentia - Castoridae
Euroxenomys sp.1 Samson and Radulesco 1973 beaver
 Rodentia - Mylagaulidae
Mesogaulus paniensis2 Matthew 1902 rodent
 Rodentia - Zapodidae
Zapodidae indet.1, "Plesiosminthus clivosus" = Schaubeumys clivosus1
Zapodidae indet.1 Coues 1875 jumping mouse
"Plesiosminthus clivosus" = Schaubeumys clivosus1 Galbreath 1953 jumping mouse
 Lagomorpha - Leporidae
? Desmatolagus schizopetrus Dawson 1965 rabbit
Megalagus cf. dawsoni Black 1961 rabbit
 Lagomorpha - Ochotonidae
 Lipotyphla - Erinaceidae
Hibbarderix sp. Martin and Green 1984 hedgehog
 Lipotyphla - Talpidae
? Mystipterus sp. Hall 1930 mole
? Scalopoides sp. Wilson 1960 mole
 Perissodactyla - Equidae
Equidae indet.1 Gray 1821 horse
Hypohippus cf. equinus Scott 1893 anchitheriine horse
 Tribosphenida - Proscalopidae
Mesoscalops sp. Reed 1960 placental
 Carnivora - Mustelidae
Mustelidae indet. Fischer 1817 mustelid carnivore
 Carnivora - Canidae
Canidae indet. Fischer 1817 canid
 Ungulata - Merycoidodontidae
Merycoidodontidae indet. Cook 1912 oreodont
small
? Merychyus sp. Leidy 1858 oreodont
 Ungulata - Entelodontidae
Entelodontidae indet. Lydekker 1883 even-toed ungulate
 Ungulata - Camelidae
Michenia sp. Frick and Taylor 1971 camel
? Miolabis sp. Hay 1899 camel
 Ungulata - Protoceratidae
Protoceratidae indet. Marsh 1891 protoceratid
 Ungulata - Palaeomerycidae
? Sinclairomeryx sp. Frick 1937 ruminant
? Bouromeryx sp. Skinner et al. 1977 ruminant
Bouromeryx americanus5 Douglass 1899 ruminant
 Ungulata - Moschidae
Parablastomeryx sp. Frick 1937 musk deer
Blastomeryx sp. Cope 1877 musk deer
compared to B. elegans and B. gemmifer