Dinosauria›Ornithischia›Ornithopoda›Hadrosauridae
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Hypacrosaurus Hypacrosaurus stebingeri Horner and Currie 1994

/hˌaɪpɐkɹəsˈɔːɹəs/ estimated
Late Cretaceous (Campanian) · 83.6–72.2 Mya

Key Statistics

Diet
herbivore
Locomotion
bipedal
inferred from clade
Habitat
ground-dwelling
Social
herding

Where It Was Found

Countries
United States, Canada
Regions
Montana · Alberta
Formations
Two Medicine · Oldman
Dig sites
17
distinct collections
Recorded finds in United States, Canada. Present-day positions: the continents have moved since.

Overview

Hypacrosaurus stebingeri is an ornithopod dinosaur known from the Late Cretaceous, roughly 83.6–72.2 million years ago. It was a herbivore. It is recorded as ground-dwelling and herding. Fossils have been recovered from Montana, United States and elsewhere. It was named by Horner and Currie 1994. The species is represented by 17 recorded occurrences in the Paleobiology Database.

Fossil Record Completeness

How much of this profile is grounded in the fossil record

~49%
well attested
Based on 17 recorded occurrences in the Paleobiology Database.

Geologic Time

Where Hypacrosaurus stebingeri sits in deep time

TRIASSIC
JURASSIC
CRETACEOUS
Hypacrosaurus
252 Mya201 Mya145 Mya66 Mya

Relationships

Part of a wider fossil web

These species share Hypacrosaurus stebingeri'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.

predator–prey
Gorgosaurus
Gorgosaurus libratus
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predator–prey
Daspletosaurus
Daspletosaurus horneri
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predator–prey
Daspletosaurus
Daspletosaurus torosus
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coexisted–with
Centrosaurus
Centrosaurus apertus
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coexisted–with
Stegoceras
Stegoceras validum
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coexisted–with
Ichthyornis
Ichthyornis dispar
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coexisted–with
Hesperornis
Hesperornis regalis
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coexisted–with
Protoceratops
Protoceratops andrewsi
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