From octopuses to snails, the complicated molluscan family tree has now been mapped in unprecedented detail, researchers report. This includes sequences for 13 new complete genomes from across the ...

A University of Montpellier study published on September 1st in the Proceedings of the National Academy of Sciences reported that human intervention over the last millennium drove a sharp divergence ...

Embryonic germ layers are the fundamental organizing principle in animal development. They provide the structural basis from which tissues and organs arise. During early embryogenesis, cells divide to ...

The evolutionary origin of sperm can be traced back to a single-celled ancestor of all living animals. Almost all animals reproduce by having a single-celled stage of their life cycle, involving two ...

"This Springer imprint is published by Springer Nature"--Title page verso. NH copy purchased with funds from the S. Dillon Ripley Endowment. Part I. The wider evolutionary context. 1. Evolutionary ...