Maiasaur Tail Chevron Fossil – Two Medicine Formation

This authentic Maiasaurus tail chevron dates to approximately 82–74 million years ago from the Late Cretaceous period. Discovered in the Two Medicine Formation of Montana, this specimen comes from a region well known for its rich dinosaur fossil deposits.

Chevron bones are located beneath the tail vertebrae and played an important role in supporting tail muscles and protecting blood vessels. This piece offers a unique look at the underside structure of a dinosaur’s tail—something less commonly seen in collections.

The fossil displays natural texture, mineralization, and preserved structure, making it a strong and educational display piece.

This is the exact specimen you will receive, carefully sourced and reviewed by our in-house team. 

Size: 5"L x 1.5"W x 3"H

Key Features:

Genuine Maiasaurus tail chevron fossil
82–74 million years old (Late Cretaceous)
From the Two Medicine Formation, Montana
Unique tail bone structure (chevron)
Natural fossil texture and preservation
Display-ready specimen
Exact specimen shown