sharks

Hey there,






Welcome to my blog. I will be writing and posting about where sharks came from, different types of sharks and much more!

Lots of fossil evidence has shown that sharks existed before dinsosaurs did , which would have been around 400 million years ago! Since the shark skeleton is mainly made up of cartilage, the only thing preserved was the fossil samples of dermal denticles and the teeth, The first fish appeared on earth about 510 million years ago. Not all shark species  that we have today are still around , fossils have shown that many have gone extinct. The oldest fossil ever recorded of a shark dates back to approx 455 million years ago.
 

 

The arrival of modern sharks dates back to around 100 million years ago! 65 million years ago there was a massive meteor shower which killed the majority of animal species on our planet.

 

One of the best known sharks is called the megalodon, dating back to 1.6 million years ago.. fossils show that it most likely evolved from the Cretolama which lived 60-100 million years ago