One of Archelon's most notable features was its shell

characterized by its large size and a distinctive feature: a tall sail on its back

En ese momento

with an estimated length of between 3 and 4 meters and a weight of around 70-100 kilograms

Carnotaurus sastrei Busto Oviraptor One of Archelon's most notableCarnotaurus (Carnotaurus sastrei) is a theropod dinosaur that lived in what is now Argentina during the Cretaceous period, approximately 72 to 69 million years ago. It stands out for its unmistakable appearance and distinctive features. Carnotaurus was a relatively large dinosaur, although it did not reach the dimensions of other theropods such as Tyrannosaurus rex. It measured around 8 to 9 meters in length and its weight is estimated to be around 1.