Abundance: 0.82 to 43.07% (median 4.85%)

Latitudinal range: 36.8° to 43.6°

Habitats: (8) only

Found in 8 samples

United States: Pratt Quarry (Middle Miocene), Red Basin (UOloc 2495) (Middle Miocene), Quartz Basin (UOloc 2465) (Middle Miocene), Whisenhunt Quarry (Late Miocene), Mission Quarry (Late Miocene), WaKeeney (UM-K6-59) (Late Miocene), WaKeeney (KU Loc. 29) (Late Miocene), Shoreline (Late Miocene)

See also Eucastor phillisi, Eucastor planus, Eucastor progressus, Eucastor sp., Eucastor typicus