Ancient predatory whale with big eyes and razor-sharp teeth was ‘deceptively cute’
Scientists discovered an ancient “misleadingly cute” whale with large eyes and sharp teeth that devoured the prey of Australia about 26 million years ago.
The newly discovered Janjucetus DULARDI is one of the first known cousins blue whale (Balaenoptera musculus). However, J. DULARDI was much smaller than her living parents, with a compact body built for speed.
The researchers identified this new species from pieces of skull found on the south-eastern coast of Australia. The individual to whom he belonged was a juvenile or a sub-adult, about 7 feet (2.1 meters) long, according to a study published Tuesday (August 12) in the journal Linnean Society Zoological Journal.
“It is essentially a little whale with large eyes and a mouth full of sharp and sharp teeth”, the main author of the study Ruairidh DuncanA doctoral student in paleontology at the Victoria Museums research institute and at Monash University in Australia, said in a statement. “Imagine the shark -shaped version of a Baleen whale – small and deceptively cute, but certainly not harmless.”
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J. DULARDI It was up to a family of small whales called mammals, who lived in warm and shallow waters off Australia and New Zealand during the Oligocene era (33.9 million to 23 million years old). It is not long, in evolutionary time, since the moment when the former former whales today have returned for the first time in the ocean About 50 million years ago.
A school director named Ross Dulard first spotted the J. DULARDI Fossils while walking along the beach of Half Moon Bay, near Melbourne, in 2019. Fossils were exposed to the basis of a rocky outcrop eroded by waves – part of a geological training known as Jan Juc Marl, which is between around 24 million and 28 million years. After discovering the fossils, Dullard gave them to the Victoria museums.
“This type of public discovery and its relationship to the museum is vital”, author of the main study Erich FitzgeraldA main preservative of the paleontology of vertebrates at the Museums Victoria Research Institute, said in the press release. “The discovery of Ross has released an entire chapter of the evolution of whales that we have never seen before. It is a reminder that the fossils that change the world are in your own backyard.”
The researchers used photography, microt scanners and other techniques to carry out a detailed analysis of fossils, which included preserved teeth and inner ear structures. The team deduced that J. DULARDI was a previously unknown species of Mammalodontide and named it after Dullard. One of the reasons why researchers could say that it was a young whale was due to a lack of wear on their teeth.
South-eastern Australia has become a hotspot for ancient whale fossils, with two other species of mammalodontides recovered from the formation of Jan Juc Marl. Researchers continue to find fossils in this region and expect more discoveries in the coming years, according to the press release.
“This region was once a cradle for some of the most unusual whales in history, and we are just starting to discover their stories,” said Fitzgerald.
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