Xiphactinus audax

Part of the ANCIENT WATERS Exhibit

Late Cretaceous Period, approx. 100-66 million years ago

1:2 Scale Skull Replica

SPECIMEN PROFILE

Xiphactinus audax was a large predatory bony fish that inhabited the expansive inland seas covering much of Late Cretaceous North America. It was among the most formidable piscine predators of its time, occupying a high trophic level within a dynamic marine ecosystem.

Its body was elongated and powerfully built for rapid acceleration, with a deeply forked tail providing strong bursts of speed. Large, fang-like teeth lined its jaws, adapted for seizing and swallowing sizable prey. Fossil evidence, including well-known specimens preserved with intact juvenile fish inside the stomach cavity, suggests that Xiphactinus was an aggressive, opportunistic predator capable of engulfing prey nearly half its own size.

COLLECTOR & CURATOR NOTE

A high-speed apex predatory fish of the Late Cretaceous seas—its aggressive feeding behavior and fossilized stomach contents reveal one of the most dramatic predator-prey interactions in marine vertebrate history.

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