Mass: 29.0 g based on Layne 1958, Rose and Ford 2012, and Lindsay 1960

Abundance: 0.16 to 27.33% (median 0.41%)

Latitudinal range: 30.3° to 45.5°

Habitats: (12), temperate broadleaf/mixed forest (3)

Found in 15 samples

Canada: Caverne de la Mine (lower infill) (Holocene)

United States: Fort Necessity National Battlefield, MacIntyre Development (forest habitats), Suffolk, Ardis (Late Pleistocene), Harrodsburg Crevice (Late Pleistocene), Ripplemead (Late Pleistocene), Hosterman's Pit (Holocene), Robinson Cave (Late Pleistocene), Meyer Cave (Holocene), Schulze Cave (layer C1) (Late Pleistocene), Schulze Cave (layer C2) (Late Pleistocene), New Paris Sinkhole No. 4 (Late Pleistocene), Natural Chimneys (Late Pleistocene), Cumberland Cave (Middle Pleistocene)

♀ body mass	22.0 g	N = 1	Layne 1958
♀ body mass	32.2 g	N = 1	Layne 1958
♀ body mass	49.5 g	N = 1	Layne 1958
♀ body mass	25.30 g	N = 2	Rose and Ford 2012
♂ body mass	25.0 g	N = 1	Layne 1958
♂ body mass	36.7 g	N = 1	Layne 1958
♂ body mass	26.43 g	N = 2	Rose and Ford 2012
body mass	29.0 g	N = 13	Lindsay 1960
hind foot length	19.5 mm	N = 4	Layne 1958
tail length	19.2 mm	N = 4	Layne 1958
total body length	127.0 mm	N = 4	Layne 1958

See also Synaptomys, Synaptomys australis, Synaptomys borealis, Synaptomys sp.