Mega-Shark Teeth Of 25-Million-Year-Old Found On Australian Beach

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According to the museum, these teeth provide evidence that a shark which would have grown to more than 30-feet in length, almost double the size of a great white, "once stalked Australia's ancient oceans" approximately 25 million years ago.

Fossil enthusiast Philip Mullaly holds a giant shark tooth-evidence that a shark almost twice the size of a great white once stalked Australia's ancient oceans-at the Melbourne Museum on August 9, 2018. This ancient shark was over 30 feet in length and was one of the most magnificent sea predators of its times, and was closely related with the famous Megalodon.

He contacted the senior curator of vertebrae paleontology at Museums Victoria, Erich Fitzgerald, and offered to donate the teeth, the first of its kind to be discovered in Australia. They'll be on display until October 7.

Secondly, these rare fossils are among a handful of ancient shark teeth to have been found as a set.

"These teeth are of worldwide significance, as they represent one of just three associated groupings of Carcharocles angustidens teeth in the world, and the very first set to ever be discovered in Australia", said Dr. Erich Fitzgerald, senior curator of vertebrate paleontology at Museums Victoria. This is because sharks can lose even one tooth a day and their skeletons are made of cartilage, which is hard to fossilize. What likely happened is that as the narrow-toothed shark died in the waters off of Jan Juc, the sixgill sharks descended upon the remains and had a feast, leaving some teeth behind.

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He explained that nearly all fossils of sharks worldwide were just single teeth, and it was extremely rare to find multiple associated teeth from the same shark.

Realizing the fossilized shark teeth was all from the same species, Dr. Fitzgerald and colleagues suspected that they came from one individual shark and there might be more teeth at Jan Juc.

"The stench of blood and decaying flesh would have drawn scavengers from far around", he said.

"If we can find out any more clues about the lifestyle (and) the ecology of this extinct species, that might shed light as to what led to its extinction", he said.

"I'm willing to bet there's more up there", he said.