New Fossil Takes A Bite Out Of Theory That Sharks Barely Evolved
“Sharks have looked more or less the same for hundreds of millions of years. But a newly discovered fossil suggests that under the hood, a modern shark is very different from its ancient ancestors.
The finding, published in the journal Nature, strongly implies that sharks are not the “living fossils” many paleontologists once thought they were. “They have evolved through time to improve upon the basic model,” says John Maisey, a paleontologist at the American Museum of Natural History who helped identify the fossil.”
Ancient And Vulnerable: 25 Percent Of Sharks And Rays Risk Extinction
“There are more than a thousand species of sharks and rays in the world, and nearly a quarter of them are threatened with extinction, according to a new study. That means these ancient types of fish are among the most endangered animals in the world.
“An analysis of shark-tooth weapons from the 19th century reveals that two shark species, the spot-tail and dusky, were once common in the Gilbert Island reefs in the Central Pacific. The sharks are no longer found in the area.”
“Shark fin is the prized ingredient of shark fin soup, a luxurious dish sought after in the Far East. As a photographer, I have documented sharks and the shark fin trade for over a decade. However, Arabia was not on my radar as a major shark-fishing region. After scouring obscure fisheries reports, I discovered that the region had only recently become one of the top global suppliers of sharks.”