53 Single amino acid radiocarbon dating of Upper Paleolithic modern humans.
http://www.pnas.org/content/109/18/6878.abstract
52 Dinosaur morphological diversity and the end-Cretaceous extinction.
http://www.nature.com/ncomms/journal/v3/n5/full/ncomms1815.html
51 Origins and Genetic Legacy of Neolithic Farmers and Hunter-Gatherers in Europe.
http://www.sciencemag.org/content/336/6080/466.abstract
50 Computer Simulation on the Cooperation of Functional Molecules during the Early Stages of Evolution.
http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0035454
49 Late Jurassic salamandroid from western Liaoning, China.
http://www.pnas.org/content/109/15/5767.abstract
48 A gigantic feathered dinosaur from the Lower Cretaceous of China.
http://www.nature.com/nature/journal/v484/n7392/full/nature10906.html
47 Spatial and temporal arrival patterns of Madagascar's vertebrate fauna explained by distance, ocean currents, and ancestor type.
http://www.pnas.org/content/109/14/5352.abstract
46 Origin of first cells at terrestrial, anoxic geothermal fields.
http://www.pnas.org/content/109/14/E821.abstract
45 Mapping patterns of long-term settlement in Northern Mesopotamia at a large scale.
http://www.pnas.org/content/109/14/E778.abstract
44 Mechanism for Burgess Shale-type preservation.
http://www.pnas.org/content/109/14/5180
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