1, carnivorous whale.

Whales we usually see are very docile animals. Although they are big, they are gentle. Animals like Moby Dick are very spiritual and good friends of human beings. But this carnivorous whale is different. They have sharp teeth, are cruel and aggressive, and can easily bite their prey into pieces.

2. Large bryozoa.

This ancient creature looks ugly and weird. But they have lived on the earth for more than 400 million years. This kind of bryozoa has a strong destructive effect on the freshwater ecosystem, which can multiply rapidly, pollute the water source and make it difficult for other species to stand on their feet.

3. prehistoric lizards.

Prehistoric lizards were about the same size and appearance as they are now, but their claws were sharper. Their body length is about 20 cm. Scientists may have recovered their physical characteristics from excavated fossils.

4. Mysterious lizard.

So far, there is no definitive conclusion about this lizard. Scientists only got some common information from some fossils. The deeper research data about it is not very comprehensive, and even we can't restore its basic appearance. The research on this lizard is still under further study.

5. Chilean dragon.

This dinosaur is very small and looks a bit like a horse. It is said that this kind of dragon is one of the few vegetarians among dinosaurs. At present, we know little about it as a whole, and further research is under way.