Sounds likely to me. I don't know exactly what wording I'd use, but some food for thought: when Alfred Wallace independently rediscovered evolution, his paper on the topic was titled On the Tendency of Varieties to Depart Indefinitely from the Original Type. You can find the full text at http://www.human-nature.com/darwin/archive/arwallace.html - it's short and clear, and from my perspective offers a good approach to understanding why existing species are not ontologically fundamental.