The animal kingdom stretches anatomy far beyond human expectations. Some creatures carry organs that rival furniture in size, while others rely on structures so tiny they can only be seen through a ...

In archaeological sites across southern France and Spain, researchers have analyzed thousands of animal teeth dating back 8,000 years. These remains, especially molars from sheep and goats, show the ...

Add Yahoo as a preferred source to see more of our stories on Google. A CT scan of the tooth-like odontode structure from Astrapsis, an ancient jawless vertebrate fish shows that its tubules (shown in ...

Teeth first evolved as sensory organs, not for chewing, according to a new analysis of animal fossils. The first tooth-like structures seem to have been sensitive nodules on the skin of early fish ...

Add Yahoo as a preferred source to see more of our stories on Google. Animals have body parts that range from enormous organs to microscopic structures, showing how evolution shapes anatomy for ...

(CNN) — The sensitive interior of human teeth might have originated from a seemingly unlikely place: sensory tissue in fish that were swimming in Earth’s oceans 465 million years ago. While our teeth ...