👉 Eleutherodactylus is a genus of extinct mammals that lived during the Late Cretaceous period, around 69 to 57 million years ago. The most well-known species of this genus is the Eleutherodactylus caerulescens, which was found in the North American and Eurasian continents. Eleutherodactylus were small mammals that lived on land and had a long neck and legs that allowed them to walk upright. They were known for