416 MA
DEVONIAN416 PERIOD (57 M) (416-359
MA) Acadian
mountain building Age
of Fishes LOWER
DEVONIAN416 EPOCH (18.5 M) (416-397.5 MA) LOCHKOVIAN416
STAGE (4.8
M)
(416-411.2
MA) 411.2 MA PRAGIAN411.2
STAGE (4.2 M)
(411.2-407 MA) 407 MA EMSIAN 407
STAGE (9.5
M)
(407-397.5 MA)
400 MA
Ammonites
appear (Late Silurian - Early Devonian)
397.5 MA
MIDDLE DEVONIAN397.5 EPOCH
(12.2 M)(397.5-385.3 MA) EIFELIAN397.5
STAGE (5.7
M)
(397.5-391.8
MA) 391.8 MA GIVETIAN391.8
STAGE (6.5
M)
(391.8-385.3 MA) 385.3 MA UPPER
DEVONIAN385.3 EPOCH (26.10 M) (385.3-359.2 MA) FRASNIAN 385.3
STAGE (10.8
M)
(385.3-374.5
MA)
385 MA
Eusthenopteron
- fish creature
375 MA
Tiktaalik
roseae - missing link between fish and
amphibian 374.5 MA FAMENNIAN374.5
STAGE (15.3
M)
(374.5-359.2 MA)
370 MA
Large
shallow ocean spread across much of North America Cladoselache
- (up to 1 meter long) one of the most
ancient and primitive sharks (Ohio, Kentucky, Tennessee)
365 MA
Horsetails
Ferns Ichthyostega - with hind limb Amphibians
appear Land
arthropods abundant