Edmontosaurus Edmontosaurus annectens (Marsh 1892)
/ɛdˌmɒntəˈsɔːrəs/
Late Cretaceous (Maastrichtian) · 83.6–66 Mya
Key Statistics
Diet
herbivore
Locomotion
bipedal
inferred from clade
Habitat
ground-dwelling
Social
herding
Where It Was Found
Countries
United States, Canada
Regions
Wyoming · Montana · South Dakota · North Dakota
Formations
Hell Creek · Lance · Frenchman
Dig sites
23
distinct collections
Overview
Edmontosaurus annectens is an ornithopod dinosaur known from the Late Cretaceous, roughly 83.6–66.0 million years ago. It was a herbivore. It is recorded as ground-dwelling and herding. Fossils have been recovered from Wyoming, United States and elsewhere. It was named by (Marsh 1892). The species is represented by 30 recorded occurrences in the Paleobiology Database.
Fossil Record Completeness
How much of this profile is grounded in the fossil record
~70%
well attested
Based on 30 recorded occurrences in the Paleobiology Database.
Geologic Time
Where Edmontosaurus annectens sits in deep time
Edmontosaurus
252 Mya201 Mya145 Mya66 Mya
Relationships
Part of a wider fossil web
These species share Edmontosaurus annectens's place in deep time — computed from overlapping age ranges, shared clades, and inferred ecology. Predator–prey pairs additionally have to have been dug up in the same place.