Hennig 1950 cladistic method replaces Aristotelian scala-naturae chain-of-being with branching phylogeny; synapomorphies (shared-derived) define clades, not symplesiomorphies.
Hennig 1950 cladistic method replaces Aristotelian scala-naturae chain-of-being with branching phylogeny; synapomorphies (shared-derived) define clades, not symplesiomorphies.