Snails live all over the world, even in the ocean and in freshwater streams, lakes and marshes. They’re known both for their ...

New fossil research shows that teeth originally evolved as sensory tissue embedded in the armored exoskeletons of ancient ...

A new study from the University of Chicago suggests our sensitive teeth may be an evolutionary leftover that once helped our fishy ancestors sense their surroundings. Researchers studied modern fish ...

Even today, sharks, stingrays and catfish are covered in microscopic teeth that make their skin rough like sandpaper ... Anatolepis was the first known fish in history. But when Haridy compared ...

Even today, sharks, stingrays and catfish are covered in microscopic teeth that make their skin rough like sandpaper. There are several theories ... to believe that Anatolepis was the first known fish ...

Today, some fish still have odontodes, while animals like catfish, sharks and skates have small, tooth-like structures on their skin called denticles, which give them a texture like sandpaper.

“So there's sensitive armor in these fish, there's sensitive armor in these arthropods ... have tooth-like structures called denticles that make their skin feel like sandpaper. When Haridy studied the ...

"These jawless fish and Aglaspidid arthropods (extinct ... which cause their skin to feel like sandpaper, Haridy said. Haridy studied the tissues of the catfish she raised and realized their ...

Teeth evolved from sensory organs in ancient fish, not for chewing ... in microscopic teeth that make their skin rough like sandpaper. There are several theories for why these odontodes first ...