Dinosauria›Reptilia›Theropoda›Compsognathidae
Silhouette of Ornitholestes hermanni

Ornitholestes Ornitholestes hermanni (Osborn 1903)

/ˈɔːɹnɪthˌoʊləsts/ estimated
Late Jurassic (Tithonian) · 154.8–143.1 Mya

Key Statistics

Diet
carnivore
Locomotion
bipedal
inferred from clade
Habitat
ground-dwelling
Social
solitary

Where It Was Found

Country
United States
Region
Wyoming
Formation
Morrison
Dig sites
2
distinct collections
Recorded finds in United States. Present-day positions: the continents have moved since.

Overview

Ornitholestes hermanni is a theropod dinosaur known from the Late Jurassic, roughly 154.8–143.1 million years ago. It was a carnivore. It is recorded as ground-dwelling and solitary. Fossils have been recovered from Wyoming, United States. It was named by (Osborn 1903). The species is represented by 2 recorded occurrences in the Paleobiology Database.

Fossil Record Completeness

How much of this profile is grounded in the fossil record

~8%
confidence from occurrence count
Based on 2 recorded occurrences in the Paleobiology Database.

Geologic Time

Where Ornitholestes hermanni sits in deep time

TRIASSIC
JURASSIC
CRETACEOUS
Ornitholestes
252 Mya201 Mya145 Mya66 Mya

Relationships

Part of a wider fossil web

These species share Ornitholestes hermanni'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
Brontosaurus
Brontosaurus excelsus
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predator–prey
Camarasaurus
Camarasaurus grandis
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predator–prey
Camarasaurus
Camarasaurus lentus
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coexisted–with
Giraffatitan
Giraffatitan brancai
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coexisted–with
Kentrosaurus
Kentrosaurus aethiopicus
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coexisted–with
Dacentrurus
Dacentrurus armatus
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same–clade
Stokesosaurus
Stokesosaurus clevelandi
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same–clade
Coelurus
Coelurus fragilis
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