Abundance: 0.10 to 14.80% (median 2.46%)

Latitudinal range: 42.2° to 51.1°

Habitats: (9) only

Found in 9 samples

Canada: Who Nose (Early Palaeocene), Police Point (Middle Palaeocene)

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)

See also Mesodma ambigua, Mesodma formosa, Mesodma pygmaea, Mesodma sp.