Zalambdalestes (meaning much-like-lambda robber) is an extinct genus of eutherian mammal known from the Upper Cretaceous in Mongolia.

It had strong front paws and even stronger rear ones, sharing specializations to saltation similar to those of modern rabbits.

[1][2] It was most likely not a placental due to the presence of an epipubic bone,[1][3] It had a unique axis that allowed for rapid movements, and in life it might have had spines or bristly fur.

[4] Its diet was probably composed mainly of insects that it hunted in the forest undergrowth using its sharp, interlocking teeth.

[4] Unlike modern placental mammals, Zalambdalestes had an epipubic bone, meaning it was probably restricted reproductively in the same way as modern monotremes and marsupials,[1] though a study on multituberculate reproduction suggests early eutherians could give birth to well-developed young.