https://scienceblogs.com/evolvingthoughts/2009/05/10/the-first-biological-species-c
The first biological species concept | ScienceBlogs
Before this text in 1686, the term species just meant some sort or kind of organism. It was a Latin word in ordinary use without much meaning in natural...
biological species conceptthe firstscienceblogs
https://www.blackwellpublishing.com/ridley/a-z/Biological_species_concept.asp
Evolution - A-Z - Biological species concept
a zbiological speciesevolutionconcept