Darwin's view of the evolutionary tree is beautifully expressed in the ... intended to imply that the last common ancestor of a fish clade and a tetrapod clade was itself a fish.

A simplified evolutionary tree for the genus Psilocybe. Clade I and Clade II represent the Psilocybe species with the same gene order patterns within their psilocybin-producing gene clusters.

Schematic representation of the changes in morphological diversity along the evolutionary history of the Neanderthal clade. Sima de los Huesos and, particularly, Krapina populations show similarly ...