BlogArena

General blog about anything and everything of everyday's life.

17. Sep 2019

August 6, 2013
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From obscurity to dominance: Tracking the rapid evolutionary rise of ray-finned fish

ANN ARBOR — Mass extinctions, like lotteries, result in a multitude of losers and a few lucky winners. This is the story of one of the winners, a small, shell-crushing predatory fish called Fouldenia, which first appears in the fossil … Continue reading

May 11, 2011
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The Winners of Mass Extinction: With Predators Gone, Prey Thrives

*Extinction of fishes 360 million years ago created natural ecology experiment* In present-day ecology, the removal or addition of a predator in an ecosystem can produce dramatic changes in the population of prey species. For the first time, scientists have … Continue reading