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Search results for vertebrate

Evolution Mar 7, 2023

Hollow bones that let dinosaurs become giants evolved at least three times independently, shows study

Dinosaurs as big as buses or five-story buildings would not be possible if their bones were dense and heavy like ours. Like present-day birds, dinosaurs had hollow bones with inner structures known as air sacs, which made ...

Evolution Mar 3, 2023

How fish evolved to walk

When you think about human evolution, there's a good chance you're imagining chimpanzees exploring ancient forests or early humans daubing wooly mammoths on to cave walls. But we humans, along with bears, lizards, hummingbirds ...

Evolution Mar 3, 2023

Determining the tempo of evolution across species

Scientists from Denmark and China have estimated germline mutation rates across vertebrates by sequencing and comparing genetic samples from 151 mother, father, and offspring trios from 68 species of mammals, fishes, birds ...

Plants & Animals Mar 1, 2023

Researchers reveal molecular mechanism of freeze tolerance adaptation in Amur sleeper

Some thermostatic vertebrates hibernate in extremely cold environments, while ectothermic animals migrate to relatively warmer areas or produce antifreeze proteins to prevent their body fluids from freezing, as in the case ...

Evolution Feb 28, 2023

Parental investment may have aided evolution of larger brains

A review of evidence from prior research provides new support for the possibility that the evolution of larger brains in some species was enabled through increased energy investment by parents in their offspring. Carel van ...

Plants & Animals Feb 21, 2023

Noble false widows: The tiny spiders taking a big bite out of British and Irish wildlife

Over the last two decades, an uninvited guest has made an appearance in and around homes throughout western Europe, including Britain and Ireland, as well as west Asia and the Pacific coast of North and South America.

Plants & Animals Feb 17, 2023

Dead kangaroos make a surprising feast for possums in the Australian Alps

Vultures, hyenas, and Tasmanian devils are highly efficient scavengers, able to locate and consume carrion rapidly, including the meat and bones.

Plants & Animals Feb 15, 2023

Evolution in absolute darkness: New fish species discovered in India

An Indian-German team of researchers, including Senckenberg scientist Dr. Ralf Britz, has studied the catfish genus Horaglanis in the southern Indian state of Kerala. The tiny members of this genus, only about three centimeters ...

Paleontology & Fossils Feb 13, 2023

Researchers solve a 150-year-old mystery about aetosaurs

Aetosaurs had a small head and a crocodile-like body. The land dwellers were up to six meters long and widely distributed geographically. They died out about 204 million years ago, at the end of the Triassic.

Evolution Feb 3, 2023

Fossils in a northern Alberta riverbed may reveal new facts about dinosaur evolution

Alberta has been ground zero for dinosaur discoveries in Canada since the 1880s, when several Geological Survey of Canada expeditions collected dinosaur bones from the southern part of the province.

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