Sauropods are among the most familiar of all
dinosaurs—consider that pretty much everybody knows Brontosaurus or Brachiosaurus.
But what may surprise you is that most sauropods are known from fairly scant
remains—isolated vertebrae or pieces of the axial skeleton. Brontomerus was named for, essentially,
an incomplete ilium and scapula. Argentinosaurus,
one of the largest tetrapods that ever lived, was named for a series of
vertebrae, ribs, and a fibula. But you know what’s most often missing from a
sauropod skeleton? The head.