Holotype:

Localities: From various localities of southern Alberta; the UALVP specimens are from the Irvine Locality, and the RTMP specimens are from the Railway Grade, White Rock Coulee, Hope Johnson’s microfossil sites (DPP), Sandy Point, and Manyberries localities (coordinates on file in UALVP and RTMP).

Horizon: Oldman Formation, middle Judith River Group.

Biostratigraphy:

Age: Judithian age, Middle Campanian Stage, Senonian subepoch, Upper Gulf epoch, Late Cretaceous.

Material:

UALVP 33346, 33366-33369, RTMP 65.24.6, 81.38.4 and 27 unnumbered specimens, all Incomplete maxillaries.

UALVP 33370-33373, RTMP 79.8.631: and more than 30 unnumbered fragment specimens, all dentaries,

UALVP 33373-33377, RTMP 82.20.36, 84.168.2: Parietals.