Dinosauria › Saurischia › Sauropodomorpha › Diplodocidae
Apatosaurus
Apatosaurus louisae (Holland 1915)
Late Jurassic (Tithonian) · 154.8–143.1 Mya
Key Statistics
Diet
herbivore
Locomotion
quadrupedal
inferred from clade
Overview
Apatosaurus louisae is a sauropodomorph dinosaur known from the Late Jurassic, roughly 154.8–143.1 million years ago. It was a herbivore. It was named by (Holland 1915). The species is represented by 5 recorded occurrences in the Paleobiology Database.
Fossil Record Completeness
How much of this profile is grounded in the fossil record
~18%
fragmentary record
Confirmed
Inferred
Based on 5 recorded occurrences in the Paleobiology Database.
Geologic Time
Where Apatosaurus sits in deep time
Apatosaurus
252 Mya201 Mya145 Mya66 Mya
Relationships
Part of a wider fossil web
These species share Apatosaurus's place in deep time — computed from overlapping age ranges, shared clades, and inferred ecology.