Abundance: 3.78 to 38.71% (median 24.14%)

Latitudinal range: 45.9° to 49.3°

Habitats: (7) only

Found in 7 samples

Canada: Gryde (Maastrichtian)

United States: Muddy Tork (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)

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