So far, the largest dinosaur we have discovered is Seismosaurus, which was 39 to 52 meters long! Height can reach 18 meters! ! The weight reaches 130 tons! ! ! In other words, if 2 to 3 seismic dragons stand together head to tail, they can line up from one gate of the football field to another. And if such a heavy behemoth walks in the wilderness, every time its huge feet touch the ground, the ground will tremble, like an earthquake. This is the meaning of the name "Zhenlong".
Zhenlong
The era when Seismosaurus lived was the late Jurassic period, which was about 162 million to 136 million years ago. In animal taxonomy, it belongs to the order Sauroschia, the order Sauropods, and the family Diplodocidae. In addition to Seismosaurus, the giant sauropods (generally called sauropods) that lived on the earth at that time also included Diplodocus (26 meters in length) and Brontosaurus (21 meters in length and 25 tons in weight) of the family Diplodocidae. ), Superosaurus (length 42 meters, shoulder height 5.19 meters, hip height 4.58 meters), Mamenchisaurus (length 22 meters), Brachiosaurus (length 25 meters, weight 30-50 tons), etc. .
These giant dinosaurs were plant eaters, and their tall bodies and long necks allowed them to eat leaves from high trees. Such a huge body must require a particularly large appetite, but these dinosaurs all had relatively small heads and small mouths. How could they satisfy such a large appetite? Probably they just have to keep eating. Scientists speculate that Mamenchisaurus spent 23 hours a day eating! This is probably the best in the world.
Think about how many leaves a Mamenchisaurus would eat in 23 hours. There were thousands of other Mamenchisaurs, and many more other giant sauropods. It seems that at that time, the earth must have been covered with dense plants and forests, and the natural environment was very superior, which allowed so many giant creatures to live leisurely on the earth.
Now, we can no longer see such huge animals on land, and the only ones that can compare with them are probably the blue whales living in the ocean. Female blue whales can grow to more than 30 meters and weigh up to 200 tons.
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