hace aproximadamente 165 millones de años

Silesaurus opoliensis is believed to have been quadrupedal and probably spent most of its time on land

approximately between 80 and 65 million years ago

which accounted for about a quarter of its total length

forming a kind of "delta" similar to an airplane wing

Anzu wyliei skeleton Variant:Unprimed hace aproximadamente 165 millones deAnzu wyliei is a theropod dinosaur of the Caenagnathidae family that lived in the late Cretaceous, between 68 and 66 million years ago, in North America, particularly in the floodplains and swamps of the Hell Creek Formation, in what is now Montana and South Dakota. This dinosaur, colloquially known as the "chicken from hell" for its mix of avian features and unique appearance, was approximately 3 to 3. 5 meters long and weighed up to 300 kilograms,