Abundance: 0.10 to 5.69% (median 0.16%)

Latitudinal range: 46.2° to 47.7°

Habitats: (4) only

Found in 4 samples

United States: Purgatory Hill (Early Palaeocene), Gidley Quarry (Middle Palaeocene), Scarritt Quarry (Middle Palaeocene), Douglass Quarry (Middle Palaeocene)

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