What are the characteristics of ichthyosaurs?

Vertebrates, ancient reptiles, belong to ichthyosaurs. The body is spindle-shaped, shaped like a fish, and its limbs become flippers, which is suitable for swimming. The dorsal fin is fleshy, and the upper leaf of caudal fin is short and the lower leaf is long. The neck is short, the eyes are big, the kiss is long and the teeth are sharp. Living in the ocean. Fierce, feeding on animals. Viviparous Jurassic reached its peak. The "Tibetan Himalayan ichthyosaur" discovered by paleontologists in China at an altitude of 4,800 meters on Mount Everest in Tibet is the highest vertebrate fossil in the world, which proves that this area was once the sea of Wang Yang. It is 10 meter long, lived in the early Triassic and became extinct in the Cretaceous. An ancient reptile name. Shaped like a fish, it was born in the ocean. The limbs are paddle-shaped and suitable for swimming. Big eyes. Long mouth, sharp teeth and plenty of meat. Viviparous it flourished in Jurassic.