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)

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

♀ 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.