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An analysis of a partially complete tail fin fossil shows that Cretoxyrhina had a lunate (crescent-shaped) tail most similar with modern lamnid sharks, whale sharks, and basking sharks. The transition to tail vertebrae is estimated to be between the 140th and 160th vertebrae out of the total 230, resulting in a total tail vertebral count of 70 ...
Older than dinosaurs and trees, sharks have endured a lot throughout their 450 million years on Earth. They’ve even survived five mass extinctions, including the asteroid that wiped out 75% of ...
[11] [13] Sharks are also killed for their flesh in Europe and elsewhere. [14] The 2007 film Sharkwater documents ways in which sharks are being hunted to extinction. [15] In 2009, the IUCN Shark Specialist Group reported on the conservation status of pelagic (open water) sharks and rays. They found that over half the pelagic sharks targeted by ...
Extinct or Alive is an American wildlife documentary television programme produced for Animal Planet by Hot Snakes Media of New York City, the United States.It is hosted by wildlife biologist and television personality Forrest Galante, who travels to different locations around the globe to learn about possibly extinct animals and whether or not there is a chance that they may still be extant. [1]
The grey nurse shark, the name used in Australia, is the second-most used name for the shark, and in India it is known as blue-nurse sand tiger. However, there are unrelated nurse sharks in the family Ginglymostomatidae. The most unambiguous and descriptive English name is probably the South African one, spotted ragged-tooth shark. [2] [4]
Shark research is hard to get funding for, in part, because sharks aren’t a commercial species. Yet the irony is that they affect commercial species, namely fish populations.
The Gracely family was on their annual vacation to Myrtle Beach and made the 2.5-hour trip south to Summerville to go to Palmetto Fossil, a 100-acre pit rich with prehistoric material including ...
Sand sharks have a large second dorsal fin. [1] The sand shark can grow up to 3.2 m (10 ft) long, and most adults can weigh around 200 kg (440 lb). The average lifespan of both sexes is only about 7 years, though they may live longer in captivity.