An atypical study conducted by a group of researchers from the University of Otago in New Zealand has discovered more fossil remains that reveal the secrets behind the evolution of baleen whales.
The ancient fossil whale that floated the Antarctic Sea 34 million years ago, the path was paved for further knowledge of the evolution of baleen whales.
Professor Ewan Fordyce of the University's Faculty of Geology found a part of the skull – Llanocetus denticrenatus, which is believed to be the second – The world's oldest baleen whale
The baleen whale is considered the largest animal on the planet.
According to the latest findings, the old whales were free of beards and had well-developed gums and wild looking teeth to bite their prey
"The early Llanocetus denticrenatus is the ancestor of modern gentle blue whales and humpback whales," said the paleontologist Felix Marx of the Royal Belgian Institute of Natural History l. Sciences.
While today's whales bathed in their mouths, the ancestor had teeth and was a scary robber, Marx added.
In addition, the Llanocetus denticrenatus, about eight meters in length, has also been shredded in earlier studies suggesting that "filter feeding" initially occurred when the whales still had teeth.
Speaking of the similarities between today's whales and ancestors, both possessed unique groves on the roof of their mouths, which were generally blood vessels. The huge gums of the old whales eventually became more complex and eventually turned into baleen.
Researchers believe climate change from tropical temperatures to much cooler temperatures is the main reason for the evolution of whales. With the sudden change in temperature, there was also a change in the food and nutrition cycle, which forced the whales to change their hereditary characteristics.
The study suggested that the beards may have evolved to keep the smaller prey more effectively, according to Professor Fordyce.
A research paper based on these findings was published in the journal Current Biology on Thursday.