👉 Monodontomerus is a genus of extinct mammals that lived during the Mesozoic era, around 65-58 million years ago. This group contained a diverse array of species with distinct features such as long, slender bodies and large brains, which allowed for complex social behaviors. The exact number of species within this genus remains uncertain, but some have been proposed to be related to modern mammals like the platypus or the echinoderm. Monodontomerus is known for