Science · 1984 · 56 citations · 8 references
Natural SciencesArchaeologyBotanyPaleoanthropologyPaleobotanyPlant EvolutionDomesticationFossil FruitsFossil PlantsFruit AnatomyArchaeobotanical Evidence For DomesticationArchaeobotanical Fruit RemainsArchaeological Plant RemainsCarbonized Plant RemainsFruit Internal MorphologyOrigin Of Fruits
Approximately 50,000 carbonized fruits of the species Chenopodium berlandieri recovered from Russell Cave, Alabama, and dating to 1975 +/- 55 before the present, exhibit a set of interrelated morphological characteristics reflecting domestication (thin testa, truncate margin, rectanguloid fruit cross section, ligulate cotyledons, and increased internal fruit volume). These morphological characteristics establish the presence of a domestic variety of Chenopodium in the eastern United States by 2000 years ago.
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COMPARATIVE EVOLUTION OF CEREALS
Jack R. Harlan, J. M. J. de Wet, Elbert Glen Price · Evolution · 1973 · 522 citations
Accelerator radiocarbon dating of evidence for prehistoric horticulture in Illinois
Nicholas J. Conard, David L. Asch, Nancy B. Asch et al. · Nature · 1984 · 80 citations