Their efforts yielded an impressive fossil find of 40 teeth, unearthed in late 2017.
After his initial find, Mullaly worked with a team from the Museums Victoria, the organization that administrates the Melbourne Museum, to uncover nearly 40 teeth in total between December 2017 and January 2018.
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.
According to reports, an amateur fossil enthusiast named Philip Mullaly recently found teeth that belonged to a Carcharocles angustidens, a shark that lived between 33 to 22 million years ago, and was twice the size of a modern great white.
Fitzgerald also determined that all of the teeth most likely came from the same individual shark. "'There could be more there".
In the video below, Fitzgerald comments on the importance of this discovery and the contribution that citizen scientists like Mullaly bring to paleontology.
"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", Dr. Erich Fitzgerald, senior curator of Vertebrate Palaeontology at Museums Victoria, said in a statement.
"The teeth were finely serrated and sharper than a steak knife", Fitzgerald said. The teeth discovered on the beach were around 7 cm (2.75 inches) in length.
"This find suggests they have performed that lifestyle here for tens of millions of years", Museums Victoria paleontologist Tim Ziegler said.
So the best news is that the Carcharocles angustidens is not going to kill us, or Jason Statham.
Paleontologist-a lover Philip Mullaly came across a unique artifact when walking through the countryside, Jan-JUC, located about 100 kilometers from Melbourne. The findings paint a gruesome picture of what the paleontologists think occurred at this spot. There, a school of sixgill sharks, each with sawlike teeth, sliced its rotting flesh apart and feasted upon its carcass. "It's shark eating shark", says Fitzgerald.