Origins of photosynthesis in plants dated to 1.25 billion …
Origin and early evolution of photosynthesis
USA, 28 Oct 2003.
Moya Meredith Smith and Zerina Johanson, "Separate Evolutionary Origins of Teeth from Evidence in Fossil Jawed Vertebrates" , doi:10.1126/science.1079623, p 1235-1236 v 299, , 21 Feb 2003.
: Wingless stick insects have re-evolved wings, perhaps many times.
"The teeth that might have allowed mammals to develop ...into today's relative giants arose twice on different continents." Juliette Shackleton, Nature Science Update, 4 January 2001.
Origins of Photosynthesis by Deborah Fishbeck on Prezi
Cardona et al., in the advanced online edition of Molecular Biology and Evolution, examined the evolution origins of the D1 protein in cyanobacteria, which forms the heart of Photosystem II, the oxygen-evolving machine of photosynthesis. Photosystem II's role is to procure electrons for photosynthesis and it does this by ripping them out of water releasing oxygen as a byproduct. The research team selected all known D1 sequences from cyanobacteria and also representatives from algae and plants to compare the protein sequence variation.