Noun
the evolution of a biological species
Source: WordNetOrdinary speciation remains fully adequate to explain the causes and phenomenology of punctuation. Stephen Jay Gould
On Earth, among millions of lineages or organisms and perhaps 50 billion speciation events, only one led to high intelligence ; this makes me believe its utter improbablity. Ernst Mayr
Owning your own racing ship wasn't even wealth. It was like speciation. It was conspicuous consumption befitting ancient Earth royalty, a pharaoh's pyramid with a reaction drive. Daniel Abraham
The process of speciation is completed with the cessation of genetic exchange. Peter R. Grant
Adaptive speciation quickly gave rise to many diverse groups of plants, and, at the same time, corresponding speciation occurred in certain insect groups. Source: Internet
Change in Pleistocene populations did not involve speciation (the splitting of one species into two): all this time, the geographically distinct populations maintained small amounts of gene flow. Source: Internet