Pachyrhinosaurus lakustai

Part of the HORNS & ARMOR Exhibit

Late Cretaceous Period, approx. 73-69 million years ago

1:4 Scale Skull Replica

SPECIMEN PROFILE

Pachyrhinosaurus lakustai was a centrosaurine ceratopsian that inhabited the coastal floodplains and river-delta environments of Late Cretaceous North America. It lived in large herding populations, where group structure and social behavior played a significant role in survival against large predatory theropods.

Unlike many ceratopsians, Pachyrhinosaurus lacked prominent nasal horns. Instead, it developed thick, roughened bosses of bone across the snout and skull frill, likely used for display, intraspecific competition, and visual recognition within herds. Its powerful beak and complex dental batteries allowed it to process tough, fibrous vegetation efficiently, supporting large-bodied herbivory in a dynamic and predator-rich ecosystem.

COLLECTOR & CURATOR NOTE

A heavily built ceratopsian defined by its distinctive nasal boss structure—an unusual evolutionary variation within horned dinosaurs that emphasizes display and reinforcement over traditional horn projection.

CONSTRUCTION & DISPLAY

Scale

• 1:4, approx. 11.8 in or 30 cm

Fossil Finishes

• Aged Bone: A weathered bone-white aesthetic, evoking exposed skeletal remains and museum restorations.

• Canyon: Warm earth tones and terracotta hues, inspired by fossil beds such as Picketwire and Mill Canyon.

• Fossilized: Deep browns and near-black coloration, replicating the mineral-rich preservation seen in authentic fossil specimens.

Specimen Format

• Unmounted study specimen: A standalone skull, ideal for shelves, cases, or custom display setups.

• Desktop-mounted display specimen: Presented on a handmade desktop stand, crafted from wood with brass furnishings and a custom specimen placard — designed to elevate the specimen as a true exhibit piece.

Medium

• Hand-painted resin