Trionyx sp. Skeleton on Slab ( Display Replica is painted Solid Color is one color )

Trionyx sp. Skeleton on Slab

(Display Replica is painted Solid Color is one color)


Availability: In Stock

Production times may vary. Custom products are not always available on hand. Normal production time 2 months.

  • The Work is a product of the artistry, artwork, and preparation of BHI and/or their affiliates. As such it is protected under United States and International Copyright laws. Any duplication of The Work without written authorization of the copyright holder(s) is not permitted and is subject to civil and criminal prosecution, excluding the following:

1) BUYER may capture media of The Work for use in BUYER’s promotion, advertising, and marketing, except where such use creates consumer merchandise.

2) BUYER may capture media of The Work for use in BUYER’s interpretive media.

SKU: Display Replica is painted Solid Color is one color Categories: , Tags: , ,


It’s genus lived during the Cretaceous, but survived the KT extinction, and still exists today! Currently, the Trionyx shells never grow much larger than 20 inches (51 cm), but during the Eocene, they reached as much as twice that size!

All fossil Trionyx are quite rare, but they are extremely rare from the Green River Formation.
Our Trionyx replica has an excellent skull, carapace, and feet. This is a replica of one of only a handful of good specimens in existence.

Display Replicas are painted by our experts to match the original fossil’s coloration. Solid Color Replicas are unmounted casts suitable for research or reference purposes. It is painted a single color. Note: some portions of the original fossil may have been scientifically restored.

Age Eocene [~ 45MYA]
Locality Green River Formation, Wyoming, USA
Credit The original was prepared by Black Hills Institute of Geological Research, Inc. and is currently on display at The Museum at Black Hills Institute in Hill City, South Dakota.
Notes Standard production time is 2 months, check with us to confirm build time and delivery.
Size ~ 24″ l x 25″ h (61 x 64 cm)


Black Hills Institute
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Additional information

Weight 25 lbs
Dimensions 28 × 29 × 8 in
Trionyx sp. Skeleton on Slab

Solid Color Replica, Display Replica