Diplodocus had the longest whip-like tail ever.
The second longest dinosaur is Argentinosaurus, at 140 ft long.
its a dinosaur it is the dinosaur with the longest name ever
AMPHICOELIAS
The longest dinosaur is believed to be Argentinasaurus, which could grow to 110 feet.
Iguanodon
Longest Tailed ChickenThe Japanese Onagadori has the longest tail.2nd Longest Tailed ChickenThe chicken with the longest tail and tail feather is the Japanese phoenix rooster, it tail feathers have a record length of 20 feet long.
Liopleurodon
The tallest dinosaur ever discovered is a Sauroposeidon.However, this is not the longest or most massive dinosaur.
The longest dinosaur lenth is about 50 feet (15 meters) according to scientiests.
mamenchasaurus
It was not a dinosaur, but a plesiosaur and the longest plesiosaur. It could grow upto 15 m long.
58 year