The most commonly mentioned long necked dinosaurs are the sauropods, which were usually huge and always quadrupedal and herbivorous. Other long necked dinosaurs included Therizinosaurs, Ornithomimids, and Troodontids.
Argentinosaurus was the biggest hervivorous dinosaur that has a long neck.
There were a number of long-necked dinosaurs. One was the brontosaurus.
Plesiosaur
Janenschia is a dinosaur. It was a huge dinosaur with a long neck and tail.
Amargasaurus.
Bruhathkayosaurus
grass and leaves
Diplodocus.
A long neck dinosaur that eats plants
This depends on which long-necked dinosaur you are talking about. Heights varied between species.
The dinosaur with a long snout like an elephant is called a Brachiosaurus. It was a herbivorous sauropod dinosaur known for its long neck, small head, and nostrils located on the top of its head, giving it a resemblance to an elephant.
it has a long neck