Mass extinctions.
Factors influencing the evolution of complex traits such as body size are notoriously difficult to study but a new review of work on marine iguanas in the Galapagos islands suggests an answer may lie in the interplay of natural and sexual selection.
Morris
Simon Conway
SC
Department of Earth Sciences, University of Cambridge, Cambridge CB2 3EQ, UK. sc113@esc.cam.ac.uk
D044822:Biodiversity; D004190:Disasters; D005843:Geography; D010163:Paleontology; D011157:Population Dynamics