what dinosaur has the longest tail
Dino Myths. Among the longest land animals! Diplodocus was a long-necked, whip-tailed giant, measuring about 90 feet (27 m) long with a 26 foot (8 m) long neck and a 45 foot (14 m) long tail, but its head was less than 2 feet long. It was among the longest land animals ever.
The majority of Diplodocus' length was taken up by its neck and tail. For instance, the neck alone of D. carnegii was at least 21 feet (6.5 meters) long, according to a 2011 study in the Journal of Zoology, and its tail was even longer.