Found Quote by Ernst Mayr

A new species develops if a population which has become geographically isolated from its parental species acquires during this period of isolation characters which…

— Ernst Mayr

A species is a reproductive community of populations reproductively isolated from others that occupies a specific niche in nature.

— Ernst Mayr

“As the species of the same genus usually have, though by no means invariably, much similarity in habits and constitution, and always in structure,…

— Charles Darwin

“Species that evolved from a common ancestor are bunched together under the heading ‘genus’ (plural genera).”

— Yuval Noah Harari

I accept extinction as best explaining disjoined species. I see that the same cause must have reduced many species of great range to small,…

— Asa Gray

Established species are evolving so slowly that major transitions between genera and higher taxa must be occurring within small rapidly evolving populations that leave…

— Steven M. Stanley

Transitional forms are generally lacking at the species level, but they are abundant between larger groups.

— Stephen Jay Gould

Most people are surprised when they hear my somber figures: we know of 2 million species of plants, animals and microorganisms, and we can…

— E. O. Wilson

Take the crocodile, for example, my favorite animal. There are 23 species. Seventeen of those species are rare or endangered. They're on the way…

— Steve Irwin

“Although much remains obscure, and will long remain obscure, I can entertain no doubt, after the most deliberate study and dispassionate judgment of which…

— Charles Darwin

A species consists of a group of populations which replace each other geographically or ecologically and of which the neighboring ones integrate or hybridise…

— Ernst Mayr

Every paleontologist knows that most new species, genera, and families, and that nearly all categories above the level of family appear in the record…

— Anonymous