1. Ichthyostega. Ichthyostega devonian dinosaur, dinosaur park. The first creature that most scientists consider to have walked on land is today known as Ichthyostega.

When was the first animal on earth?

around 800 million years ago These clusters of specialized, cooperating cells eventually became the first animals, which DNA evidence suggests evolved around 800 million years ago. Sponges were among the earliest animals.

What was the 2nd animal on earth?

jellyfish The second animal on earth would be the jellyfish, it existed even 505 million years ago. New fossil evidence of jellyfish goes back over half a billion years.

Do dinosaurs have two brains?

As paleontologists now know, no dinosaur had a second brain. There are two intertwined issues here. But the so-called “sacral brain” is something different. So far, this distinct kind of cavity is only seen in stegosaurs and sauropods and is different than the typical expansion of the neural canal.