Meanwhile, the sixgill shark teeth uncovered along with the Carcharocles angustidens fossils appear to belong to several individuals, which probably scavenged on the dead mega-shark and lost their teeth in the process.
So he led a team of palaeontologists, volunteers, and Mullaly on two expeditions earlier this year to excavate the site, collecting more than 40 teeth in total.
The shark was about twice the length of a normal great white shark. "I was immediately excited, it was just ideal and I knew it was an important find that needed to be shared with people", Mullaly told the museum.
He added that it is extremely rare to find multiple teeth from the same shark at one time, and hypothesized that more fossils from the shark could be inside the same boulder.
Found along the Surf Coast in Victoria by a fossil enthusiast named Phillip Mullaly, the teeth measure a stunning 2.7 inches long, and are evidence that the megalodon wasn't the only very big shark prowling around our ancient waters.
The teeth fossils are now on exhibit at Museums Victoria.
"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 ever to be discovered in Australia", stated Dr. Erich Fitzgerald, a Senior Curator of Vertebrate Palaeontology.
A prehistoric shark feast the Carcharocles angustidens being feasted upon by several Six Gill Sharks.
"If you think about how long we've been looking for fossils around the world as a civilization-which is maybe 200 years-in (that time) we have found just three (sets of) fossils of this kind on the entire planet, and this most recent find from Australia is one of those three", Fitzgerald told CNN.
Paleontologist-a lover Philip Mullaly came across a unique artifact when walking through the countryside, Jan-JUC, located about 100 kilometers from Melbourne.
"The stench of blood and decaying flesh would have drawn scavengers from far around", he said.
Fitzgerald also determined that all of the teeth most likely came from the same individual shark.
"Sixgill sharks still live off the Victorian coast today, where they live off the remains of whales and other animals". "They are still sharp, even 25 million years later".