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Hace 2 días · Archaeopteryx had a cerebrum-to-brain-volume ratio 78% of the way to modern birds from the condition of non-coelurosaurian dinosaurs such as Carcharodontosaurus or Allosaurus, which had a crocodile-like anatomy of the brain and inner ear.
Hace 2 días · Birds survived the dinosaur extinction by being smaller, more adaptable, and ecologically diverse. Their ability to fly also offered them unique escape routes and access to dispersed food sources. Unraveling the mystery of how birds outlasted the catastrophic events that extinguished the dinosaurs presents a fascinating glimpse into ...
Hace 4 días · K–T extinction, a global extinction event responsible for eliminating approximately 80 percent of all animal species about 66 million years ago. It was characterized by the purging of many lines of animals that were important, including nearly all of the dinosaurs and many marine invertebrates.
Hace 4 días · Contrary to the commonly held belief that the dinosaurs left no descendants, Archaeopteryx, which was first discovered in 1861, and Xiaotingia, which was formally classified in 2011, provide compelling evidence that birds (class Aves) evolved from small theropod dinosaurs.
Hace 4 días · Dinosaur - Theropods, Extinction, Fossils: Theropoda includes all the known carnivorous dinosaurs and birds. They have carnivorous dentitions, large, recurved claws on the fingers, and epipophyses on the neck vertebrae.
Hace 4 días · Crocodilians have a wide hearing range, with sensitivity comparable to most birds and many mammals. The well-developed trigeminal nerve allows them to detect vibrations in the water (such as those made by potential prey). [68]
Hace 2 días · Avetheropoda, as their name indicates, were more closely related to birds and are again divided into the Allosauroidea (the diverse carcharodontosaurs) and the Coelurosauria (a very large and diverse dinosaur group including the birds).
