Dinosauria › Saurischia › Sauropodomorpha › Diplodocidae
Brontosaurus
Brontosaurus excelsus (Marsh 1879)
Late Jurassic (Tithonian) · 154.8–143.1 Mya
Key Statistics
Diet
herbivore
Locomotion
quadrupedal
inferred from clade
Overview
Brontosaurus excelsus 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 (Marsh 1879). The species is represented by 13 recorded occurrences in the Paleobiology Database.
Fossil Record Completeness
How much of this profile is grounded in the fossil record
~41%
confidence from occurrence count
Confirmed
Inferred
Based on 13 recorded occurrences in the Paleobiology Database.
Geologic Time
Where Brontosaurus sits in deep time
Brontosaurus
252 Mya201 Mya145 Mya66 Mya
Relationships
Part of a wider fossil web
These species share Brontosaurus's place in deep time — computed from overlapping age ranges, shared clades, and inferred ecology.