The oldest fragments of proteins found to date are derived from the collagen of Brachylophosaurus canadensis. This species of dinosaurs which is thought to have lived 80 million years ago, was discovered in Montana (USA) in 2009.

>Brachylophosaurus canadensis – collagen COL1A1 
GATGAPGIAGAPGFPGARGPSGPQGPSGAPGPK GVQGPPGPQGPRGLT GPIGPTGFPGAA

_{Source: Expansion for the Brachylophosaurus canadensis Collagen I Sequence and Additional Evidence of the Preservation of Cretaceous Protein (2017) / 80-Million-Year-Old Dinosaur Collagen Confirmed (2017)}