Dinosaurs That Start With B

Discover a complete list of over 65 dinosaurs that start with the letter B.

Each dinosaur listed has a dedicated page with information on classification, diet, size, fossil evidence, geographic distribution, and maps of known fossil locations, where available. Pages may also include size comparison charts, fossil representations, and in-depth descriptions based on current scientific research.

The amount of information varies by species, depending on the completeness of fossil discoveries.

Brachiosaurus

Diet: Herbivore.Size: Up to ‬26‭ ‬meters long.Time Period: Kimmeridgian of the Jurassic.

Brachyceratops

Diet: Herbivore.Size: About‭ ‬1.5‭ ‬meters long for the juvenile specimens.Time Period: Campanian of the Cretaceous.

Brachylophosaurus

Diet: Herbivore.Size: About‭ ‬9‭ ‬meters long.Time Period: Campanian of the Cretaceous.

Brachytrachelopan

Diet: Herbivore.Size: Estimated to be‭ ‬10‭ ‬meters long.Time Period: Tithonian of the Jurassic.

Bravasaurus

Diet: Herbivore.Size: Holotype roughly about‭ ‬7‭ ‬meters long.Time Period: Late Cretaceous.

Breviceratops

Diet: Herbivore.Size: Unavailable.Time Period: Campanian of the Cretaceous.

Brighstoneus

Diet: Herbivore.Size: Roughly estimated to have been about‭ ‬8‭ ‬meters long.Time Period: Barremian of the Cretaceous.

Brohisaurus

Diet: Herbivore.Size: Unavailable.Time Period: Kimmeridgian of the Jurassic.

Brontomerus

Diet: Herbivore.Size: Approximately 14 meters long.Time Period: Aptian to Albian of the Cretaceous.

Brontosaurus

Diet: Herbivore.Size: B.‭ ‬excelsus and B.‭ ‬parvus estimated to be about‭ ‬22‭ ‬meters long.‭ ‬B.‭ ‬yahnahpin estimated to be about‭ ‬21‭ ‬meters long.Time Period: Kimmeridgian of the Jurassic.

Bruhathkayosaurus

Diet: Herbivore.Size: Uncertain since original fossils are now gone and estimates vary considerably.Time Period: Early Maastrichtian of the Cretaceous.

Buitreraptor

Diet: Carnivore.Size: About‭ ‬1.5‭ ‬meters long.Time Period: Cenomanian to Turonian of the Cretaceous.

Burianosaurus

Diet: Herbivore.Size: Holotype femur roughly about‭ ‬46‭ ‬centimetres long.Time Period: Late Cretaceous.

Buriolestes

Diet: Carnivore‭?Size: Holotype roughly about‭ ‬1.6-1.7‭ ‬meters long.Time Period: Carnian of the Triassic.

Byronosaurus

Diet: Carnivore.Size: 1.5‭ ‬meters long.Time Period: Campanian stage in the late Cretaceous.