Species Differentiation
- Development of rooted plants
- Flowering plants vs. Conifers
- Ferns and other primitive plants
- Borderline species such as coliform protists
Read more about this topic: Timeline Of Plant Evolution
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“Thus all probable reasoning is nothing but a species of sensation. ‘Tis not solely in poetry and music, we must follow our taste and sentiment, but likewise in philosophy, When I am convinc’d of any principle, ‘tis only an idea which strikes more strongly upon me. When I give the preference to one set of arguments above another, I do nothing but decide from my feeling concerning the superiority of their influence.”
—David Hume (1711–1776)