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

callout: A single shark may run through upwards of 50,000 teeth in its lifetime. The shark pictured here is a composite. Moreover, it's a male composite. Finally, we only touch on some of the ...

“A few years ago, I was looking through the historical fossil collections at the Geological Survey in Alabama and came across a small box of shark teeth that were collected over 100 years ago in ...

Remarkably, fossil shark teeth are also incredibly abundant. Sharks ruled the earth's oceans for 400 million years, and every individual grows and sheds thousands of teeth in their lifetime. How ...

The shark’s distinctive teeth were identified as a new-to-science species during a Paleontological Resource Inventory at Mammoth Cave National Park in southern Kentucky this year. The inventory ...

Rows of these teeth emerge from gum tissue, reminding her of stones set in a mosaic. In a first, researchers have recorded what could be a shark making deliberate sounds. A small shark from New ...