Ongoing research into the biostratigraphy of the upper Campanian Dinosaur Park Formation
(DPF) of Alberta has demonstrated that megaherbivorous dinosaur taxa (ankylosaurs …

ABSTRACT An articulated, 1.5 m long skeleton of a juvenile Chasmosaurus, lacking only the
front limbs, pectoral girdles, and terminal caudal vertebrae, was collected from the Dinosaur …

This study reports on a new ceratopsid, Spiclypeus shipporum gen et sp. nov., from the
lower Coal Ridge Member of the Judith River Formation in Montana, USA, which dates to …

The horned dinosaurs (Ceratopsidae) were a diverse family of herbivorous dinosaurs
originating in the Late Cretaceous in western North America (Laramidia). As one of the most …

Three new chasmosaurines from the Kirtland Formation (~ 75.0–73.4 Ma), New Mexico, form
morphological and stratigraphic intermediates between Pentaceratops (~ 74.7–75 Ma …

Although ceratopsian dinosaurs have been excavated from the Judith River Formation for
more than a century, their diversity within the formation remains poorly understood due to …

The exceptionally rare transition to quadrupedalism from bipedal ancestors occurred on
three independent occasions in ornithischian dinosaurs. The possible driving forces behind …

abstract North America hosted a diverse assemblage of horned dinosaurs from the late
Campanian until the end of the Cretaceous, but comparatively little is known about earlier …

The early centrosaurine ceratopsid, Wendiceratops pinhornensis, was discovered in Alberta,
Canada in a medium density monodominant bonebed from the Oldman Formation (mid …

Bravoceratops polyphemus gen. et sp. nov. is a large chasmosaurine ceratopsid from the
lowermost part of the Javelina Formation (early Maastrichtian) of Big Bend National Park …