Abundance: 0.32 to 0.68%

Latitudinal range: 42.7° to 44.8°

Habitats: (2) only

Found in two samples

United States: UMMP SC-67 (Early Eocene), UCMP locality V77064 (Early Eocene)

See also Esthonyx, Esthonyx acutidens, Esthonyx ancylion, Esthonyx bisulcatus, Esthonyx grangeri, Esthonyx gunnelli, Esthonyx spatularius