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Search results for vertebrate

Evolution Sep 28, 2022

Rare fossil teeth overturn long-held views about evolution of vertebrates

An international team of researchers has discovered 439-million-year-old remains of a toothed fish that suggest the ancestors of modern osteichthyans (ray- and lobe-finned fish) and chondrichthyans (sharks and rays) originated ...

Evolution Sep 28, 2022

Dead fish breathes new life into the evolutionary origin of fins and limbs

A trove of fossils in China, unearthed in rock dating back some 436 million years, have revealed for the first time that the mysterious galeaspids, a jawless freshwater fish, possessed paired fins.

Evolution Sep 28, 2022

Dawn of fishes: Early Silurian jawed vertebrates revealed head to tail

A newly discovered fossil "treasure hoard" dating back some 436 million years to the early Silurian period reveals, for the first time, the complete body shape and form of some of the first jawed fishes.

Evolution Sep 28, 2022

Ancient 'shark' from China may be humans' oldest jawed ancestor

Living sharks are often portrayed as the apex predators of the marine realm. Paleontologists have been able to identify fossils of their extinct ancestors that date back hundreds of millions of years to a time known as the ...

Optics & Photonics Sep 27, 2022

Ahead of the curve: An optical fiber sensor for measuring deviations in the spine

The backbone or spine (or the vertebral column) can be divided into four major curves. The shapes of these curves allow our bodies to properly distribute weight in different positions and conditions, such as when sitting ...

Plants & Animals Sep 26, 2022

'Iconic' plant family at risk: Scientists estimate more than half of palm species may be threatened with extinction

In a new paper published today in the journal Nature Ecology and Evolution, scientists have estimated the conservation status of nearly 1,900 palm species using artificial intelligence, and found more than 1,000 may be at ...

Evolution Sep 17, 2022

Oldest vertebrate fossil heart ever found tells a 380 million-year-old story of evolution

In the limestone ranges of Western Australia's Kimberley region, near the town of Fitzroy Crossing, you'll find one of the world's best-preserved ancient reef complexes.

Evolution Sep 15, 2022

380-million-year-old heart illuminates evolutionary history

Researchers have discovered a 380-million-year-old heart—the oldest ever found—alongside a separate fossilized stomach, intestine and liver in an ancient jawed fish, shedding new light on the evolution of our own bodies.

Ecology Sep 14, 2022

Researchers identify combination of factors for organic cacao yield

In the cultivation of organic cacao, many factors determine the yield. An international research team with scientists from the universities of Würzburgh and Göttingen has now identified important players and their combined ...

Plants & Animals Sep 13, 2022

Genes responsible for red coloration in birds found

An international team of researchers has found the genes responsible for converting yellow carotenoids in birds to red ketocarotenoids. In their paper published in the journal Cell Biology, the group describes the steps they ...

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