Deinonychus Deinonychus antirrhopus (Ostrom 1969)
/daɪˈnɒnɪkəs/
Early Cretaceous (Cenomanian) · 121.4–93.9 Mya
Key Statistics
Diet
carnivore
Locomotion
bipedal
inferred from clade
Habitat
ground-dwelling
Where It Was Found
Country
United States
Regions
Montana · Wyoming · Oklahoma · Arkansas
Formations
Cloverly · Antlers · Holly Creek
Dig sites
35
distinct collections
Overview
Deinonychus antirrhopus is a theropod dinosaur known from the Early Cretaceous, roughly 121.4–93.9 million years ago. It was a carnivore. It is recorded as ground-dwelling. Fossils have been recovered from Montana, United States. It was named by (Ostrom 1969). The species is represented by 35 recorded occurrences in the Paleobiology Database.
Fossil Record Completeness
How much of this profile is grounded in the fossil record
~75%
well attested
Based on 35 recorded occurrences in the Paleobiology Database.
Geologic Time
Where Deinonychus antirrhopus sits in deep time
Deinonychus
252 Mya201 Mya145 Mya66 Mya
Relationships
Part of a wider fossil web
These species share Deinonychus antirrhopus'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.