Every species has come into existence coincident both in space and time with a closely allied species.
About this quote
- What does it mean?
- Every species appears alongside a closely related species in both space and time.
- In plain terms
- Species arise together with close relatives.
- What can you take from it?
- Evolution often produces related species in the same region and era.
Where it applies
Putting it to work
Questions to consider
- What mechanisms drive co‑occurrence?
- Are there notable exceptions?
Another view
Exceptions exist where species appear isolated from close relatives.
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