Ever wonder why sharks have so many differently shaped teeth or why they keep regrowing throughout their lives? Dr. David ...

The estimate of 5.5 million species of insects is interesting. What’s even more remarkable is that because scientists have ...

which are some of the earliest vertebrates (animals with backbones) in which the mouth is fossilized. Their aim was to answer questions about feeding in early vertebrates without jaws in the early ...

It explains that fish are vertebrates with gills, scales, and various adaptations for movement and survival, while invertebrates, like jellyfish and starfish, lack backbones. There are three main ...

For context, that's about 100 million years before any of our vertebrate ancestors - animals with a backbone - ever walked on land. A species is the most basic unit that biologists use to classify ...

Megalodon may have been up to 80 feet long, but the colossal extinct shark was also probably thinner than scientists ...

Zebra finches learn their courtship songs early in life by first listening to their fathers and memorizing the melodies.

The findings could help reshape how scientists and popular science fiction depict the enormous creature — and has possibly shed light on what lets some marine vertebrates evolve extraordinarily ...

Beetles alone account for almost one-third of the number, about 1.5 million species. By comparison, there are “only” an ...