starch grain evidence for the preceramic dispersals of maize and root crops into tropical dry and humid forests of panama.the central american isthmus was a major dispersal route for plant taxa originally brought under cultivation in the domestication centers of southern mexico and northern south america. recently developed methodologies in the archaeological and biological sciences are providing increasing amounts of data regarding the timing and nature of these dispersals and the associated transition to food production in various regions. one of these methodologies, starch grain analysis, recovers identifiable m ...200717360697
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