Dryosaurus Dryosaurus altus (Marsh 1878)
/ˌdraɪəˈsɔːrəs/
Late Jurassic (Tithonian) · 154.8–143.1 Mya
Key Statistics
Diet
herbivore
Locomotion
bipedal
inferred from clade
Habitat
ground-dwelling
Social
herding
Where It Was Found
Country
United States
Regions
Colorado · Wyoming
Formation
Morrison
Dig sites
7
distinct collections
Overview
Dryosaurus altus is an ornithopod dinosaur known from the Late Jurassic, roughly 154.8–143.1 million years ago. It was a herbivore. It is recorded as ground-dwelling and herding. Fossils have been recovered from Colorado, United States. It was named by (Marsh 1878). The species is represented by 7 recorded occurrences in the Paleobiology Database.
Fossil Record Completeness
How much of this profile is grounded in the fossil record
~24%
confidence from occurrence count
Based on 7 recorded occurrences in the Paleobiology Database.
Geologic Time
Where Dryosaurus altus sits in deep time
Dryosaurus
252 Mya201 Mya145 Mya66 Mya
Relationships
Part of a wider fossil web
These species share Dryosaurus altus'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.