Dinosauria›Reptilia›Theropoda›Deinocheiridae
Silhouette of Deinocheirus mirificus

Deinocheirus Deinocheirus mirificus Kielan-Jaworowska 1969

/ˌdaɪnoʊˈkaɪrəs/
Late Cretaceous (Maastrichtian) · 72.2–66 Mya

Key Statistics

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

Where It Was Found

Country
Mongolia
Region
Omnogov
Formation
Nemegt
Dig sites
4
distinct collections
Recorded finds in Mongolia. Present-day positions: the continents have moved since.

Overview

Deinocheirus mirificus is a theropod dinosaur known from the Late Cretaceous, roughly 72.2–66.0 million years ago. It was a herbivore, omnivore. It is recorded as ground-dwelling and herding. Fossils have been recovered from Omnogov, Mongolia. It was named by Kielan-Jaworowska 1969. The species is represented by 4 recorded occurrences in the Paleobiology Database.

Fossil Record Completeness

How much of this profile is grounded in the fossil record

~15%
confidence from occurrence count
Based on 4 recorded occurrences in the Paleobiology Database.

Geologic Time

Where Deinocheirus mirificus sits in deep time

TRIASSIC
JURASSIC
CRETACEOUS
Deinocheirus
252 Mya201 Mya145 Mya66 Mya

Relationships

Part of a wider fossil web

These species share Deinocheirus mirificus'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.

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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same–clade
Kank
Kank australis
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same–clade
Maip
Maip macrothorax
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same–clade
Joaquinraptor
Joaquinraptor casali
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