PhysOrg Posted October 15, 2014 Share Posted October 15, 2014 Modern-day puffins and auks have long been recognized as environmental indicator species for ongoing faunal shifts, and fossil records now indicate that ancient relatives were similarly informative. Researchers have found that puffins and auks may have been at their most diverse and widespread levels during a relatively warm period of Earth's history. The results also explain how past extinctions have shaped the geographic distribution and population size of existing species. Read the full article on phys.org Link to comment Share on other sites More sharing options...
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