Extinct giant turtle had horned shell of up to three meters

Paleobiologists from the University of Zurich have discovered exceptional specimens in Venezuela and Colombia of an extinct giant freshwater turtle called Stupendemys. The carapace of this turtle, which is the largest ever ...

Why males pack a powerful punch

Elk have antlers. Rams have horns. In the animal kingdom, males develop specialized weapons for competition when winning a fight is critical. Humans do too, according to new research from the University of Utah. Males' upper ...

Scientists demonstrate new driver of extinction

The lengths that some males go to attract a mate can pay off in the short-term. But according to a new study from scientists at the Smithsonian's National Museum of Natural History (NMNH), extravagant investments in reproduction ...

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