There were four different species of Stegosaurus. The largest was Stegosaurus armatus, which grew to be 30 feet long. Stegosaurus longispinus and Stegosaurus stenops were both smaller, growing to be about 23 feet long.
stegosauras diplodocus tyranasaurus
diplodocus was long
Argentinosaurus was the biggest hervivorous dinosaur that has a long neck.
Lesothosaurus was a dinosaur that lived in what is now South Africa. It was a 3.3 foot long herbivorous dinosaur.
This depends on which long-necked dinosaur you are talking about. Heights varied between species.
Archaeornithomimus is an 11 ft long omnivorous dinosaur; so it ate some meat. Another omnivorous dinosaur was Citipati, and it was 9 ft long.
The largest dinosaur is Amphicoelias, at 200 ft long.
There were a number of long-necked dinosaurs. One was the brontosaurus.
The second longest dinosaur is Argentinosaurus, at 140 ft long.
Janenschia is a dinosaur. It was a huge dinosaur with a long neck and tail.
some dinosaurs are 23 metres long
Seismosaurus, a herbivore and sauropod.