BREITHAUPT, 1985

Locality: Wyoming.

Horizon: Harebell Formation.

Biostratigraphy:

Age: Late Cretaceous.

Material:

Number: Not given:

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BREITHAUPT, 2001

Locality: Hoodoo Point, SDSM V9717, Thunder Basin National Grassland, Northeastern Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

Age: Lancian age, upper Maastrichtian Stage, Upper Senonian subepoch, Upper Upper Gulf epoch, Late Cretaceous.

Material:

Number: Not given: 2 specimens.