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The Birds I Never Met: North America's Extinct Birds

Recently I looked into a number of extinct birds from all around the world, but few of them shed light on those that I would've lived alongside. Today we're "borrowing" my mom's field guide on the ...
insider.si.edu

Odontornithes: a monograph on the extinct toothed birds of North America with thirty-four plates and forty woodcuts By Othniel Charles Marsh

CC0 Usage Conditions ApplyClick for more information. This media is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this work without contacting the ...
Popular Science

8,000-pound sloths once roamed North America. Where’d they go?

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Giant sloths used to roam all over North America. Over 10 times ...