Scientists have discovered the oldest-known fossil of a tadpole, dating back approximately 161 million years to the Middle Jurassic period Scientists have discovered the oldest-known fossil of a ...

Scientists have now discovered the oldest ancestor for all the Australian tree frogs, with distant links to the tree frogs of South America. Newly discovered evidence of Australia's earliest species ...

Early in development, many animals pick a team — male or female — based on their genetics, and, with time, acquire the characteristics to match. New research from the Marine Biological Laboratory (MBL ...

The realization has big implications for how scientists think about evolution. Phenotypic plasticity offers a solution to the crucial puzzle of how organisms adapt to environmental challenges, ...

This newly discovered poison frog may represent an evolutionary step on the pathway towards developing brilliant warning coloration associated with other poison dart frogs. A small reddish-brown frog ...