robust wings indicate an adaptation to long-distance flight

El epíteto específico

Archeopteryx (A

dicho cuerpo lo podían retraer y encerrarse en su concha mediante un opérculo córneo

although they were capable of standing up on their hind legs to reach higher branches or to observe their surroundings

Elasmotherium sibiricum sexta_extincion robust wings indicate an adaptationElasmotherium sibiricum, commonly known as the Siberian unicorn rhinoceros, was a species of rhinoceros that lived during the Pleistocene, approximately 2. 6 million to 29,000 years ago. Below is an overview of this fascinating creature: Morphology: The most distinctive feature of Elasmotherium sibiricum was its unique large horn on its forehead, which has earned it the nickname "unicorn rhinoceros." Although it is called a unicorn, its horn was not