Abundance: 0.01 to 27.33% (median 0.59%)
Latitudinal range: 28.1° to 67.8°Habitats: (21), boreal forest/taiga (1), temperate broadleaf/mixed forest (3)
Found in 25 samples
Canada: Churchill (1952), Old Crow River Loc. 11A (square S30E120) (Late Pleistocene), Caverne de la Mine (lower infill) (Holocene)
United States: Fort Necessity National Battlefield, MacIntyre Development (forest habitats), Suffolk, Ardis (Late Pleistocene), Zesch Cave (Late Pleistocene), Saber-tooth Cave (Late Pleistocene), Golf Course (Late Pleistocene), Harrodsburg Crevice (Late Pleistocene), Ripplemead (Late Pleistocene), Bat Cave (Late Pleistocene), Hosterman's Pit (Holocene), Prairie Creek (Zone D) (Late Pleistocene), Robinson Cave (Late Pleistocene), Meyer Cave (Holocene), Bootlegger Sink (Pleistocene - Holocene), Prairie Creek (Zone C) (Pleistocene - 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), Quitaque Creek (Late Pleistocene)
See also Synaptomys australis, Synaptomys borealis, Synaptomys cooperi, Synaptomys sp.