Fossils of Huge Sea Animals Found High in the Swiss Alps
2022-05-04
LRC
TXT
大字
小字
滚动
全页
1Scientists have identified some remains, or fossils, of huge ancient reptiles found on mountain tops in Switzerland years ago.
2The researchers' finding is a little surprising.
3The fossils are from ichthyosaurs, a very large animal that lived in water.
4But the remains were discovered many hundreds of meters above sea level.
5The Journal of Vertebrate Paleontology published the study on Thursday.
6It describes some rib bone and backbone fossils from two ichthyosaur individuals.
7One bone was about 21 meters long, the other measured around 15 meters.
8A tooth from a third ichthyosaur is also an important finding, says expert Martin Sander of the University of Bonn.
9He is the lead writer of the study.
10"The tooth is particularly interesting because it could possibly - but unlikely - represent the largest animal to ever inhabit Earth," he said.
11The tooth is about 6 centimeters at the base and about 15 centimeters long, the study says.
12The fossils are around 205 million years old, the study found, dating them to the late Triassic Period.
13The tooth came from a mountain near the Swiss city, Davos.
14It suggests the animal was a good hunter that could kill other large animals for food.
15The ichthyosaur was the largest-ever reptile that lived in the seas.
16They had long bodies and small heads.
17The fossils were found at three sites in the Swiss Alps during the 1970s and '80s, said Heinz Furrer, another study writer.
18Furrer is a retired scientist from the University of Zurich's Paleontological Institute and Museum.
19He was one of several students that discovered the fossils years ago.
20The remains are incomplete, making it impossible to confirm the exact kind of ichthyosaur made the fossils.
21Most likely the animals belonged to an ichthyosaur family called Shastasauridae.
22It includes the biggest-known ichthyosaur called Shastasaurus.
23It was found in Canada and believed to be 21 meters long.
24Some researchers have proposed longer ichthyosaur lengths based on incomplete fossils.
25Until now, huge ichthyosaurs had not been known to have lived at the end of the Triassic Period.
26Scientists had thought the group disappeared from Earth a few million years earlier.
27The blue whale has long been considered the largest animal to have lived on Earth.
28It can grow to 30 meters long and weigh close to 200 metric tons.
29But study writer Sander said more research on the Triassic ichthyosaur may renew questions about the planet's largest creatures.
30I'm Jill Robbins.