Utahraptor ostrommaysi

Part of the RAPTORS & HUNTERS Exhibit

Early Cretaceous Period, approx. 125-120 million years ago

1:2 Scale Skull Replica

SPECIMEN PROFILE

Utahraptor ostrommaysi was one of the largest known dromaeosaurids, inhabiting the floodplains, forests, and seasonal river systems of Early Cretaceous North America. As a member of the dromaeosaur lineage, it represents a shift toward larger-bodied, more powerfully built “raptor” predators capable of tackling substantially larger prey than their smaller relatives.

Its anatomy reflects a combination of strength and agility: robust hindlimbs, a deep chest, and enlarged sickle-shaped claws adapted for gripping and restraining prey. The stiffened tail provided balance during rapid movement and sudden directional changes. In its ecosystem, Utahraptor likely occupied a high predatory tier, potentially hunting in coordinated groups or as a dominant solitary ambush predator of large herbivorous dinosaurs.

COLLECTOR & CURATOR NOTE

A massive dromaeosaurid predator that redefines the scale of “raptor” anatomy—combining size, strength, and precision into one of the most formidable hunters of the Early Cretaceous.

CONSTRUCTION & DISPLAY

Scale

• 1:2, 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