Hadrosaurid dinosaur — Edmontosaurus annectens

Geologic period: Latest Cretaceous — Maastrichtian

Age: Latest Cretaceous.

Feeding: Herbivorous.

Locomotion: Could use both bipedal and quadrupedal postures.

Body plan: Large-bodied hadrosaur with a broad beak, complex dental batteries and powerful hind limbs.

Evidence: Skeletal and dental anatomy are direct evidence. Other Hell Creek hadrosaur fossils preserve healed Tyrannosaurus bite evidence, showing that some attacks were survived.

Why it matters: Edmontosaurus represents one of the major large herbivores sharing late Maastrichtian landscapes with Tyrannosaurus.

Plain Language Identity: A large duck-billed hadrosaurid from the latest Cretaceous of North America.

What You Are Looking At: A skeletal cast representing Edmontosaurus annectens.

Ecosystem: Latest Cretaceous terrestrial ecosystems of western North America, including Hell Creek deposits.

Preservation: Visitor object is a cast.

Open Questions: Do not imply that the displayed Edmontosaurus cast was itself bitten by the displayed T. rex.

Source Urls: https://naturalhistory.si.edu/visit/virtual-tour/current-exhibits/deep-time-virtual-tour-fossil-list; https://www.smithsonianmag.com/science-nature/caught-in-the-act-scientists-find-a-t-rex-tooth-stuck-in-a-hadrosaur-tail-11569193/

Enrichment Method: SAGE curated research pass; title + scientific name + source scene matched; display reconstruction separated from evidence; provenance uncertainty retained

Scientific name: Edmontosaurus annectens

Evidence / representation: comparative_taxon_visual

comparative_taxon_visual

T. rex & Triceratops: The Last American Dinosaur World.

Media license: CC0

http://creativecommons.org/publicdomain/zero/1.0/deed.en