Abundance: 0.10 to 83.87% (median 14.29%)
Latitudinal range: 37.4° to 51.1°Habitats: (21) only
Found in 21 samples
Canada: Who Nose (Early Palaeocene), Police Point (Middle Palaeocene), Gryde (Maastrichtian)
United States: Purgatory Hill (Early Palaeocene), Gidley Quarry (Early Palaeocene), Scarritt Quarry (Early Palaeocene), Douglass Quarry (Middle Palaeocene), Shotgun (Carnegie Museum) (Middle Palaeocene), Chappo Type Locality (Late Palaeocene), Lane's Little Jaw Site (Maastrichtian), Muddy Tork (Maastrichtian), PTRM-V92067 (Maastrichtian), Spigot-Bottle (Maastrichtian), Z-Line Quarry (Early Palaeocene), Z-Line Quarry East (Early Palaeocene), Luck O Hutch (Early Palaeocene), Coke's Clemmys (Early Palaeocene), Mill Creek (MNA locality 1073) (Maastrichtian), Mill Creek (MNA locality 1074) (Maastrichtian), Ferris Formation (UW locality V-91004) (Early Palaeocene), Ferris Formation (UW locality V-91031) (Early Palaeocene)
See also Mesodma ambigua, Mesodma formosa, Mesodma garfieldensis, Mesodma hensleighi, Mesodma pygmaea, Mesodma sp., Mesodma thompsoni