Ancient Whale May Be Heaviest Animal Ever Found
2023-08-14
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1Scientists have discovered fossils that might have belonged to the heaviest animal in Earth's history.
2The blue whale holds the current record as the largest creature to live on Earth.
3But a collection of bones found in Peru might break that record.
4Researchers recently introduced the whale species in a study in the publication Nature.
5It is called Perucetus colossus, or "the colossal whale from Peru." Each back bone, or vertebra, weighs more than 100 kilograms.
6The animal's ribs measure nearly 1.4 meters long.
7Mario Urbina discovered the bones in 2012.
8He is with the University of San Marcos' Natural History Museum in Lima.
9An international team spent years digging them out from the side of a rocky hill in the Ica desert.
10The area was once underwater and is known for its rich collection of ocean fossils.
11The find resulted in 13 backbone vertebrae, four ribs and a hip bone.
12The large fossils date back to around 39 million years ago.
13Alberto Collareta is a paleontologist at Italy's University of Pisa.
14He was a lead writer of the study.
15He told The Associated Press the fossils were "unlike anything I've ever seen."
16Hans Thewissen is a paleontologist at Northeast Ohio Medical University who did not take part in the research.
17He said, "It's just exciting to see such a giant animal that's so different from anything we know."
18After the digging operation, the researchers used 3D scanners to study the surface of the bones and also looked inside.
19The researchers used the huge but incomplete skeleton to estimate the whale's size and weight, said Eli Amson.
20He is a paleontologist at the State Museum of Natural History in Stuttgart, Germany.
21The team estimates the ancient creature weighed somewhere between 85 and 340 metric tons.
22The biggest blue whales found have been within that range, at about 180 metric tons.
23The body of Perucetus colossus stretched about 20 meters long.
24Blue whales can be longer, with some growing to more than 30 meters.
25This means the newly discovered whale was "possibly the heaviest animal ever," said the University of Pisa's Collareta.
26But, he added, "it was most likely not the longest animal ever."
27The research team said one reason the animal weighs more is because its bones are much denser and heavier than a blue whale's bones.
28Those super-dense bones suggest the whale may have spent its time in less deep, coastal waters, the scientists said.
29Other animals that stay close to the coast, like manatees, have heavy bones to help them stay close to the seafloor.
30Amson, from the State Museum of Natural History in Germany, said that without the skull, it is hard to know what the whale was eating to support such a huge body.
31It is possible that the large creature sought food along the seafloor, the researchers said.
32Or it could have eaten up tons of smaller sea life in the ocean.
33Thewissen added that he would not be surprised "if this thing actually fed in a totally different way that we would never imagine."
34I'm Bryan Lynn.
1Scientists have discovered fossils that might have belonged to the heaviest animal in Earth's history. 2The blue whale holds the current record as the largest creature to live on Earth. But a collection of bones found in Peru might break that record. 3Researchers recently introduced the whale species in a study in the publication Nature. It is called Perucetus colossus, or "the colossal whale from Peru." Each back bone, or vertebra, weighs more than 100 kilograms. The animal's ribs measure nearly 1.4 meters long. 4Mario Urbina discovered the bones in 2012. He is with the University of San Marcos' Natural History Museum in Lima. An international team spent years digging them out from the side of a rocky hill in the Ica desert. 5The area was once underwater and is known for its rich collection of ocean fossils. The find resulted in 13 backbone vertebrae, four ribs and a hip bone. The large fossils date back to around 39 million years ago. 6Alberto Collareta is a paleontologist at Italy's University of Pisa. He was a lead writer of the study. He told The Associated Press the fossils were "unlike anything I've ever seen." 7Hans Thewissen is a paleontologist at Northeast Ohio Medical University who did not take part in the research. He said, "It's just exciting to see such a giant animal that's so different from anything we know." 8After the digging operation, the researchers used 3D scanners to study the surface of the bones and also looked inside. The researchers used the huge but incomplete skeleton to estimate the whale's size and weight, said Eli Amson. He is a paleontologist at the State Museum of Natural History in Stuttgart, Germany. 9The team estimates the ancient creature weighed somewhere between 85 and 340 metric tons. The biggest blue whales found have been within that range, at about 180 metric tons. 10The body of Perucetus colossus stretched about 20 meters long. Blue whales can be longer, with some growing to more than 30 meters. This means the newly discovered whale was "possibly the heaviest animal ever," said the University of Pisa's Collareta. But, he added, "it was most likely not the longest animal ever." 11The research team said one reason the animal weighs more is because its bones are much denser and heavier than a blue whale's bones. Those super-dense bones suggest the whale may have spent its time in less deep, coastal waters, the scientists said. Other animals that stay close to the coast, like manatees, have heavy bones to help them stay close to the seafloor. 12Amson, from the State Museum of Natural History in Germany, said that without the skull, it is hard to know what the whale was eating to support such a huge body. It is possible that the large creature sought food along the seafloor, the researchers said. Or it could have eaten up tons of smaller sea life in the ocean. 13Thewissen added that he would not be surprised "if this thing actually fed in a totally different way that we would never imagine." 14I'm Bryan Lynn. 15The Associated Press, Reuters and Nature reported on this story. Bryan Lynn adapted the reports for VOA Learning English. 16________________________________________________ 17Words in This Story 18fossil - n. something (such as a leaf, skeleton, or footprint) from a plant or animal that lived in ancient times and that you can see in old rocks 19species - n. a group of animals or plants that are similar and can produce young animals or plants 20colossal - adj. very large 21paleontologist - n. a person who studies fossil animals and plants 22giant - adj. extremely big 23scanner - n. a device that images things to see what is inside 24____________________________________________________ 25What do you think of this story? We want to hear from you. We have a new comment system. Here is how it works: 26Each time you return to comment on the Learning English site, you can use your account and see your comments and replies to them. Our comment policy is here.