Tag Archives: extinction

Modern Snake Diversity

About 66 million years ago, a massive asteroid crashed into Earth near the site of the small town of Chicxulub in what is now Mexico. The impact eradicated roughly 75% of the animal and plant species on Earth, including whole groups like non-avian dinosaurs and ammonites. New research from the …

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Yukon Wolves

Gray wolves (Canis lupus) from the Yukon Territory, Canada, survived the extinction at the end of the last Ice Age by adapting their diet over thousands of years — from a primary reliance on horses (Equus sp.) during the Pleistocene, to moose (Alces alces) and caribou (Rangifer tarandus) today. Gray …

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Australian Cockatoos

Palm cockatoos (Probosciger aterrimus), renowned for their human-like musical drumming behavior, are in severe decline, according to a paper published in the journal Biological Conservation. A palm cockatoos (Probosciger aterrimus). Image credit: Doug Janson / CC BY-SA 3.0. Palm cockatoos are one of the largest cockatoos, reaching 1.2 kg and …

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Triassic Mass Extinction

An analysis of biomarkers and their stable isotopic compositions from the Bristol Channel Basin at St. Audrie’s Bay and Lilstock, United Kingdom, has shed new light on when one of the largest mass extinction events on Earth occurred. Schematic diagram showing the factors driving global ecological change in the modern …

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Non Avian Dinosaurs

A new analysis of non-avian dinosaur diversity shows they were not in decline and were still capable of generating new species at the time of their extinction by the Chicxulub asteroid hit 66 million years ago (Cretaceous period). Bonsor et al. refute claim that non-avian dinosaurs were in decline before …

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Permian Extinction

The ancestors of both mammals and birds became warm-blooded at the same time, some 250 million years ago, in the time of the end-Permian mass extinction, according to new research from the University of Bristol. Posture shift at the end of the Permian period, 252 million years ago. Before the …

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Dust And Soot Extinction

A team of researchers from the US, the UK and Australia has analyzed burn markers from the boundary of the impact site of the Chicxulub crater in the Yucatán Peninsula in the southern Gulf of Mexico and the surrounding ocean to determine what caused the impact winter, a prolonged period …

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New Mass Extinction Event

The Carnian Pluvial Episode, a major climate change event that occurred around 234 to 232 million years ago (Late Triassic epoch), was a time of global environmental changes and possibly substantial volcanism. A new analysis of paleontological data suggests that this event was a major — but previously neglected — …

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Woolly Rhinoceros

An international team of researchers has sequenced and analyzed a complete nuclear genome and 14 mitochondrial genomes from the extinct woolly rhinoceros (Coelodonta antiquitatis) and found that its population remained stable and diverse until only a few thousand years before it disappeared from Siberia, when temperatures likely rose too high …

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Chicxulub Asteroid

Chicxulub Asteroid Caused End-Cretaceous Mass Extinction, New Study Confirms The end-Cretaceous mass extinction 66 million years ago eradicated roughly 75% of the animal and plant species on Earth, including whole groups like non-avian dinosaurs and ammonites. Debate lingers over what caused this extinction, with intense volcanic activity in India’s Deccan …

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