Dinosaur Rib Fragment with Theropod Tooth Marks, Alberta, Canada (disposition #001590)

A fossil dinosaur rib fragment, from the Alberta badlands, with carnivore (theropod) tooth marks! These marks add interest beyond the bone itself, preserving interaction between a carnivore and the dinosaur whose remains it fed upon. No fossil specimen tells a better story than this! 

The specimen retains part of the rib’s curved surface, with multiple (at least four) gashes crossing the surrounding bone texture. Such traces offer a connection to dinosaur feeding behaviour. While these marks alone cannot establish whether it resulted from predation or scavenging, it does indicate the force of the carnivore's bite was enough to indent bone. I love ribs too but my teeth do not leave behind grooves like this!

From the Harvey Negrich Collection, this fossil makes an intriguing addition to a collection focused on dinosaur palaeobiology and the ancient ecosystems of Alberta.

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.

Family: 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: Southern Alberta badlands; probably along the Red Deer River near Iddesleigh
Dimensions: 8 x 3.75 cm
Provenance: Harvey Negrich Collection
Alberta Disposition Certificate Number: 001590 (specimen #HN1086) issued July 7, 2026