What does "apatosaurus excelsus" mean?

huge quadrupedal herbivorous dinosaur common in North America in the late Jurassic

What is a synonym for "apatosaurus excelsus"?

Common synonyms include: apatosaur, apatosaurus, brontosaur, brontosaurus, thunder lizard.

Rare ·Advanced level

Noun

1
huge quadrupedal herbivorous dinosaur common in North America in the late Jurassic wordnet