Natural science History of the Rise of Mammals / Steve ブルサッテ / Kōdai Kurokawa

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Natural Sciences
About 6000 species of mammals live on Earth today.
These animals are just a tiny fraction of the rich phylogenetic tree woven by the group of mammals.
In the past, there were extraordinary animals such as the car-sized armadillo, the small puppy elephant, and the delicate four legged whale ancestor like the Chevrotain.
Most of the branches of the mammalian tree have been pruned by extinction events caused by asteroid impacts, volcanic eruptions, and climatic changes.
But the evolutionary heritage acquired by the extinct mammals has been passed on to our bodies.
For example, the shapes of the bones of the ears and jaws, the ways of pregnancy and infant growth, the shapes of the molars that enabled us to chew, and the mechanisms of the primary and permanent teeth were acquired by our ancestors over the course of 300 million years.
For example, the shapes of the bones of the ears and jaws, the ways of pregnancy and infant growth, the shapes of the molars that enabled us to chew, and the mechanisms of the primary and permanent teeth are inherited by our ancestors.
For example, the shapes of the bones of the ears and jaws, the shapes of the bones of the ears and jaws, the shapes of the molars that enabled us to chew, and the mechanisms of the primary and permanent teeth are inherited by our ancestors.
For example, the shapes of the bones of the ears and jaws, the shapes of the bones of the ears and jaws, the shapes of the bones of the ears and jaws, the shapes of the molars that enabled us to chew, and the mechanisms of the primary and permanent teeth are inherited by our ancestors.
For example, the shapes of the bones of the ears and jaws, the shapes of the bones of the ears and jaws, the shapes of the molars that enabled us to chew, and the mechanisms of the primary and permanent teeth are inherited by our ancestors.
For example, the shapes of the bones of the ears and jaws, the shapes of the bones of the mammals, the phylogenetic trees of the mammals, the shapes of the molars that enabled us to chew, and the mechanisms of the primary and permanent teeth are inherited by our ancestors.
For example, the shapes of the bones of the ears and jaws, the shapes of 300 million geological age