This little mammal is a scavenger...called Didelphodon. She is a marsupial and an expert at raiding abandoned dinosaur nests.
— Allen, about Didelphodon
in Armageddon Part II: Return of the King

Didelphodon (name meaning "Opossum Tooth") is a genus of stagodont metatherians that originated during the Late Cretaceous period in what is now North America. Although the size is small, it was the largest mammal in the Mesozoic Era. However, this primitive, badger-sized mammal lived in the world that was dominated by the dinosaurs.

In the Series 2 finale "Armageddon Part II: Return of the King", several pairs of Didelphodon were brought to the park from Late Cretaceous Montana 65 Million Years ago.


Era & DIscoveryEdit

Didelphodon lived in North America during the Late Cretaceous period, over 73-65 million years ago. They were prey animals for predators like Dromaeosaurus as well as the Cretaceous snake Dinilysia.

Didelphodon was first discovered in 1889 by Othniel Charles Marsh.

Physical AttributesEdit

A small, Cretaceous scavenging mammal, Didelphodon resembled a cross between a Tasmanian devil, a small bear, and a badger. It was a small mammal, about the size of a cat; measuring about 3 feet (1 m) long. It had strong teeth specifically designed for crushing bones and shellfish. It also had a great sense of smell and sight.

Behavior & TraitsEdit

Marsupials and specialized in raiding abandoned dinosaur nests, Didelphodon resided in shallow burrows dug by itself in forests. It was mostly active at night because there were few predators around at this time.

As an endotherm, it needed to eat on a regular basis to produce the energy needed to regulate its body. Didelphodon was an omnivore and ate a variety of foods including small animals, insects, eggs, and even plants. They would also scavenge, given the opportunity.

Being a small animal in a time of large dinosaurs, it was prey for theropods like Tyrannosaurus.



  • Didelphodon was the largest Mesozoic mammal to be brought back to the park.
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