Paléogéographie de l'Amérique du nord
Paleogeography of North America Images by: Dr. Ron Blakey Professor of Geology Northern Arizona University
2 Late Precambrian 550 Ma (Million Years Ago):
3 Middle Cambrian 510 Ma:
4 Late Cambrian 500 Ma:
5 Early Ordovician 485 Ma:
6 Middle Ordovician 470 Ma:
7 Late Ordovician 450 Ma:
8 Early Silurian 430 Ma:
9 Late Silurian 420 Ma:
10 Early Devonian 400 Ma:
11 Middle Devonian 385 Ma:
12 Late Devonian360 Ma:
13 Early Mississippian 345 Ma:
14 Late Mississippian 325 Ma:
15 Early Pennsylvanian 315 Ma:
16 Late Pennsylvanian 300 Ma:
17 Early Permian 290 Ma:
18 Middle Permian 275 Ma:
19 Late Permian 260 Ma:
20 Early Triassic 245 Ma:
21 Middle Triassic 230 Ma:
22 Late Triassic 210 Ma:
23 Early Jurassic 195 Ma:
24 Early Jurassic 180 Ma:
25 Middle Jurassic 170 Ma:
26 Late Jurassic 150 Ma:
27 Early Cretaceous 140 Ma:
28 Early Cretaceous 130 Ma:
29 Early Cretaceous 115 Ma:
30 Late Cretaceous 100 Ma:
31 Late Cretaceous 85 Ma:
32 Late Cretaceous 75 Ma:
33 Cretaceous-Tertiary 65 Ma:
34 Paleogene Paleocene 60 Ma:
35 Paleogene Eocene 50 Ma:
36 Paleogene Eocene 40 Ma:
37 Paleogene Oligocene 25 Ma:
38 Neogene Miocene 15 Ma:
39 Neogene Miocene 8 Ma:
40 Neogene Pliocene 3 Ma:
41 Quaternary Glacial 126,000 Years Ago:
42 Present:
Québec au Dévonien
North America, Devonian period. Computer artwork of the Devonian period stage (approximately 416 to 359 million years ago) of a sequence showing the formation of the North American continent. The continents are slowly moved over the surface of the Earth by currents in the fluid mantle below the crust. Over millions of years the continents moved into the positions they are in today. The present day position of the United States of America (USA) is shown outlined in white.
Titanis walleri (Velizar Simeonovski)
A Titanis walleri catches a Felis rexroadensis who tried to raid her nest in Pliocene North America.
Titanis walleri was the only known Terror Bird, from the family Phorushacidae, that managed to invade North America when the isthmus linking North and South America formed.
They stood about 2.5 meters tall.
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