Dinosauria›Reptilia›Theropoda›Dromaeosauridae
Silhouette of Atrociraptor marshalli

Atrociraptor Atrociraptor marshalli Currie and Varricchio 2004

/əˌtrɑːsiˈræptər/
Late Cretaceous (Maastrichtian) · 83.6–66 Mya

Key Statistics

Diet
carnivore
Locomotion
bipedal
inferred from clade
Habitat
ground-dwelling

Where It Was Found

Country
Canada
Region
Alberta
Formation
Horseshoe Canyon
Dig sites
6
distinct collections
Recorded finds in Canada. Present-day positions: the continents have moved since.

Overview

Atrociraptor marshalli is a theropod dinosaur known from the Late Cretaceous, roughly 83.6–66.0 million years ago. It was a carnivore. It is recorded as ground-dwelling. Fossils have been recovered from Alberta, Canada. It was named by Currie and Varricchio 2004. The species is represented by 6 recorded occurrences in the Paleobiology Database.

Fossil Record Completeness

How much of this profile is grounded in the fossil record

~21%
confidence from occurrence count
Based on 6 recorded occurrences in the Paleobiology Database.

Geologic Time

Where Atrociraptor marshalli sits in deep time

TRIASSIC
JURASSIC
CRETACEOUS
Atrociraptor
252 Mya201 Mya145 Mya66 Mya

Relationships

Part of a wider fossil web

These species share Atrociraptor marshalli'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
Hypacrosaurus
Hypacrosaurus altispinus
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predator–prey
Prosaurolophus
Prosaurolophus maximus
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predator–prey
Anodontosaurus
Anodontosaurus lambei
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coexisted–with
Triceratops
Triceratops horridus
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coexisted–with
Alamosaurus
Alamosaurus sanjuanensis
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coexisted–with
Edmontosaurus
Edmontosaurus annectens
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coexisted–with
Thescelosaurus
Thescelosaurus neglectus
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coexisted–with
Pachycephalosaurus
Pachycephalosaurus wyomingensis
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