Page 1 Layer D Layer E Radiocarbon dating human Radiocarbon dating charcoal bone 28,000 +/- 400 years ago 12,900 +/- 300 years ago dat e. & - 72-- - 4-1 the archaeological and paleontologist specimens-removed from each layer-IS available-In the- Descriptions of Strata_document. Using this information,-you will calculate.the approximate date ra m ou Layer G Layer I Potassium-argon or argon- Potassium-argon or argon argon dating volcanic rock argon dating volcanic rock 60,000 +/- 20,000 years ago 300,000 +/- 30,000 years ago F. G Drawing by Alexandra Broehl Explorations Lab and Activities Manual CC BY-NC http://explorations.americananthro.org/Questions: 1. When were the fossilized footprints from Layer | made, and how do you know? N Approximately when were the skeletal remains in Layer C deposited? Briefly describe the process you used for dating the remains. w How old are the skeletal remains in Layer D? How do you know? 4. Approximately when did Neanderthals occupy this site? How did you reach this conclusion? o . Approximately how many years ago were the Venus figurines from the site used? Briefly describe the process you used for dating them. o . What s the date range for Layer H? How do you know? w5 What is the date range for Layer J? How do you know? Explorations Lab and Activities Manual g o e 3 million years ago to raight-tusked elephant (m), which lived in the area approximately 400,000 to 50,000 years ago. The third species was a saber-toothed cat (n), estimated to exist 42 million years ago to 11,000 years ago. Layer G This stratum was made of volcanic rock and contained no cultural or paleontological material Layer H The only significant find in Layer H was the fossilized cranium of an unidentified hominin (o). Layer | Layer | was made of volcanic rock and contained the preserved footprints of a bipedal hominin Explorations Lab and Activities Manual CCBY-NC http://explorations americananthro.org. Layer J This was the deepest stratum and contained the fossilized cranium (p) and femur (q) of an unidentified hominin(s). Charcoal (r) was present, but it is unknown whether the fire was intentional