Sharks have ruled the Earth’s oceans for 400 million years and recent research on fossilized shark teeth has led to the ...

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.

That data allowed scientists to map out ratios of strontium isotopes ... North and South America after the formation of the Isthmus of Panama 4 million to 5 million years ago.

Choose from Panama Map Images stock illustrations from iStock. Find high-quality royalty-free vector images that you won't find anywhere else. Video Back Videos home Signature collection Essentials ...

Choose from Panama Central America stock illustrations from iStock. Find high-quality royalty-free vector images that you won't find anywhere else. Video Back Videos home Signature collection ...

Secretary of State Marco Rubio is visiting Panama in his first international trip. Here’s what to know about the Panama Canal ...