Megalodons and other megatooth sharks may have been, on average, probably two levels higher on the food chain than today’s great white sharks, which is like saying that some megalodons would have eaten a beast that ate great whites.
The finding contradicts another recent study, which found megalodons were at a similar level in the food chain as
In the latest study, researchers examined dozens of fossilized teeth for varieties of nitrogen, called isotopes, that have different numbers of neutrons. In animals, one specific nitrogen isotope tends to be more common than another. A predator absorbs both when it eats prey, so the imbalance between the isotopes grows further up the food chain.
The result: Megalodon and its direct ancestors, known collectively as megatooth sharks, showed nitrogen isotope excesses sometimes greater than any known marine animal. They were on average probably two levels higher on the food chain than today’s great white sharks, which is like saying that some megalodons would have eaten a beast that ate great whites.
Brasil Últimas Notícias, Brasil Manchetes
Similar News:Você também pode ler notícias semelhantes a esta que coletamos de outras fontes de notícias.
Whitmer Kidnapping Plotter Sentenced to 16 Years in PrisonOne of the men convicted in a plot to kidnap Michigan Gov. Gretchen Whitmer (D) was sentenced to 16 years in prison on Tuesday. See the potential biases and similarities in reports from foxnews, BuzzFeedNews and bbcworld:
Consulte Mais informação »
How missing Antarctic microbes complicate the search for aliens | Science NewsScientists couldn’t find microbial life in soils from Antarctica, hinting at a limit for habitability on Earth and other worlds.
Consulte Mais informação »
Amateur astronomers 'swipe right' to hunt dark energy and ID nearly a quarter million galaxiesRobert Lea is a science journalist in the U.K. whose articles have been published in Physics World, New Scientist, Astronomy Magazine, All About Space, Newsweek and ZME Science. He also writes about science communication for Elsevier and the European Journal of Physics. Rob holds a bachelor of science degree in physics and astronomy from the U.K.’s Open University. Follow him on Twitter sciencef1rst.
Consulte Mais informação »
ABC News' 'The Year: 2022' takes a look back at this year's major news eventsAs the world embarks on a new year, it leaves behind 12 months marked by war, celebrations, major political changes and more. And ABC News was there for it all and will look back at this year's most riveting events in a two-hour special, 'The Year: 2022.'
Consulte Mais informação »
Interesting Engineering's top 10 science stories of 2022A retrospective look at the 10 highest-performing science stories of the year.
Consulte Mais informação »