Monday 29 April 2019

Fossil of ancient four-legged whale with hooves discovered


Giant 42.6m-year-old fossil was found along coast of Peru and suggests creature could walk on land
Hannah Devlin Science correspondent
Thu 4 Apr 2019 16.00 BSTLast modified on Fri 5 Apr 2019 10.33 BST
An ancient four-legged whale with hooves has been discovered, providing new insights into how the ancestors of the Earth’s largest mammals made the transition from land to sea.
The giant 42.6m-year-old fossil, discovered in marine sediments along the coast of Peru, appears to have been adapted for a semi-aquatic lifestyle. Its hoofed feet and the shape of its legs suggest it would have been capable of bearing the weight of its bulky four metre long body and walking on land. Other anatomical features, including a powerful tail and webbed feet similar to an otter suggest it was also a strong swimmer.
“Whales are this iconic example of evolution,” said Travis Park, an ancient whale expert at the Natural History Museum in London, who was not involved in the latest study. “They went from small hoofed mammals to the blue whale we have today. It’s so interesting to see how they conquered the oceans.”
Older and smaller whale ancestors with four limbs had been discovered previously, but the latest specimen fills in a crucial gap in knowledge about how the creatures evolved and spread throughout the world’s oceans.


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