que vivió a finales del período Jurásico

illuminating the vast prehistoric ocean

La importancia de Tiktaalik radica en su combinación única de características anatómicas que lo hacen un eslabón crucial en la transición del medio acuático al terrestre

measuring around 5

This makes it one of the largest and fastest theropod dinosaurs known

Macrauchenia patachonica Sivatherium que vivió a finales delMacrauchenia patachonica is an extinct species of mammal that lived in South America during the Pleistocene, approximately between 7 million and 10,000 years ago. It belongs to the order Litopterna and shares morphological similarities with tapirs and horses, although its appearance is unique and distinctive. This mammal is characterized by its unusual morphology, which easily defies classification. It had a large, elongated body, a long, thin neck,