Theropod Tooth Marks on dinosaur bone, Alberta (disposition #001590)

Broken, unidentifiable dinosaur bone fragments are quite common in certain areas of Alberta, particularly where erosion exposes fossil-bearing rocks along badland slopes and cliffs. Occasionally, however, these otherwise fragmentary bones preserve evidence of dinosaur behaviour.

This specimen is an excellent example. Several deep, subparallel grooves and gouges are clearly visible across the surface of the bone, consistent with tooth marks produced by a large theropod. The pronounced nature of the marks suggests the bone was bitten during predation or scavenging, preserving direct physical evidence of a carnivorous dinosaur interacting with the remains of another dinosaur. This is one of the most pronounced examples I have seen.

Although the bone itself cannot be confidently identified to a particular dinosaur, the prominent feeding traces give the specimen considerable palaeobiological interest. Rather than simply representing an isolated fragment of fossil bone, it potentially preserves a moment of interaction between predator or scavenger and prey more than 70 million years ago.

Collected by Alberta Palaeontological Society co-founder Harvey Negrich, this specimen forms part of his dispositioned Alberta vertebrate fossil collection. The unusually distinct tooth marks make it an especially interesting addition to a dinosaur fossil or theropod-focused collection.

Legal Status: This specimen is legally available for private ownership and resale under Alberta Disposition Certificate #001590. A copy of the disposition documentation will accompany the specimen. Learn more about Alberta fossils and the disposition process.

Species: Dinosauria indet. (dinosaur; exact species undetermined)
Age: Late Cretaceous (Campanian or 74.8 - 77.5 million years ago)
Formation: Dinosaur Park or Oldman formation (Belly River/Judith River Group)
Locality: Steveville, Alberta, Canada
Dimensions: 13 x 7 cm
Provenance: Harvey Negrich Collection
Alberta Disposition Certificate Number: 001590 (specimen #HN238) issued July 7, 2026