Abundance: 1.96 to 4.88% (median 2.55%)

Latitudinal range: 44.9° to 47.7°

Habitats: (3) only

Found in 3 samples

United States: Purgatory Hill (Early Palaeocene), Gidley Quarry (Early Palaeocene), Rock Bench Quarry (Early Palaeocene)

See also Anisonchus oligistus, Anisonchus sectorius