Devonian Time Slices
Devonian 1
Devonian 1: Lochkovian (about 416-411 million years)
Devonian 2: Pragian (about 411-407 million years)
Devonian 3: Emsian (about 407-398 million years)
Devonian 4: latest Emsian (about 398-398 million years)
Devonian 5: Eifelian through early Givetian (about 398-390 million years)
Devonian 6: middle and late Givetian (about 390-385 million years)
Devonian 7: early Frasnian (about 385-380 million years)
Devonian 8: late Frasnian (about 380-375 million years)
Devonian 9: early Famennian (about 375-365 million years)
Devonian 10: late Famennian (about 365-359 million years)