Opossums Drive Viper Venom Evolution

Biologists often invoke the “arms race” metaphor when discussing the reciprocal adaptations of predator-prey. For example, pitvipers such as rattlesnakes may be engaged in an arms race with opossums, a group of snake-eating American marsupials. Although some mammals have long been known to eat venomous Read More...

Marsupial radiations revealed

Living metatherians exist in two strongholds: the Neotropics (Mexico, Central America, and South America) and the Australasian region (Australia, Tasmania, New Guinea, and nearby islands). One hypothesis to explain this odd distribution proposes that metatherians Read More...