Ancient sloths ranged in size from tiny climbers to ground-dwelling giants. Now, researchers report this body size diversity was largely shaped by sloths’ habitats, and that these animals’ precipitous ...
About 445 million years ago, Earth nearly wiped out life in the oceans. Glaciers spread across the supercontinent Gondwana, ...
During these waves of mass extinction, most vertebrate survivors were confined to refugia, or isolated biodiversity hotspots ...
A massive ice age wiped out ocean life 445 million years ago, reshaping ecosystems and setting the stage for jawed fish ...
Discover how the first mass extinction put jawed fishes on the map, species that would later come to dominate animal life on ...
A dense Arctic bonebed shows marine life and ocean food webs recovered far faster than scientists once believed after mass ...
pt. 1. Beyond the mainland ; 1. Introduction ; 2. History of island studies ; 3. Factors that influence island faunas. Types of islands. Dispersals to islands. The candidate species. Composition of ...
Imagine if scientists could reach back through time and recover the genetic blueprints of species that vanished thousands of years ago, then use those ancient instructions to rebuild lost traits in ...
The past as prologue -- Adaptation -- Origin of species -- Human evolution -- Living fossils -- Extinction -- Macroevolution -- Epilogue, old and new pictures https ...
Speciation and extinction are the twin engines that have sculpted the diversity of life on Earth. Speciation, the process by which new species arise from ancestral populations, is driven by a mixture ...
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