an ankylosaur herbivore is menaced by
a tyrannosaurid predator
from American Museum of Natural History Timelines Exhibit
| Late Cretaceous | ||
| Mesozoic: Cretaceous Period |
The high Cretaceous |
| Early Cretaceous II | Jurassic | Cretaceous | ||
| Late Cretaceous II | Paleogene | Cenomanian | Timescale |
Cretaceous |
|
an ankylosaur herbivore is menaced by
a tyrannosaurid predator
from American Museum of Natural History Timelines Exhibit
| Epoch | Age | sub-age | time MYA |
Land Mammal Age (North America) | Terrestrial Vertebrate age (Asia0 |
date A | date B | |
| LateCretaceous | Late Cretaceous II "End-Cretaceous" | Maastrichtian | Late | 65 | Puercan | 65.3 | ||
| 66 67 |
Lancian | |||||||
| Early | 68 69 |
Nemegtian | 69.7 | |||||
| 70 71 |
Edmontian | 71.3 | ||||||
| Campanian | Late | 72 | Nem. or Barun. | 72.1 | ||||
| 73 74 75 76 77 78 79 80 |
Judithian | Barungoyotian | ||||||
| Early | 81 | 81.1 | ||||||
| 82 | Aquilian | "Djadochtian" | ?? | |||||
| 83 | 83.5 | |||||||
| Late Cretaceous I"High Cretaceous" | Santonian | Late | 84 | |||||
| Early | 85 | 85.8 | ||||||
| Coniacian | Late | 87 | ||||||
| Early | 89 | 89.9 | ||||||
| Turonian | ||||||||
| Cenomanian |
dating B "A Triassic, Jurassic and Cretaceous time scale," by Gradstein, F.M., F.P. Agterberg, J.G. Ogg, J. Hardenbol, P. van Veen, J. Thierry and Z. Huang. 1995.in pp. 95-126 of W.A. Bergrgren, D.V. Kent, M.-P. Aubry & J. Hardenbol (eds.), Geochronology, Time Scales, and Global Stratigraphic Correlation. SEPM Special Publication No.54.)
In the middle Permian the gymnosperm-dominated Mesophytic flora emerges although Mesophytic type plants go back to the Carboniferous, just as some Paleophytic plants survive even to this day), and this flourishes right up until the middle and later Cretaceous. At this time, when the dinosaurs and other Mesozoic animals are in full swing, the current, angiosperm-dominated Cenophytic flora emerges (in fact Angiosperms appear in the later Early Cretaceous, but do not become predominant until the later Cretaceous). The Cenophytic flora continues quite happily through the great K-T extinction that eliminated the dinosaurs and many other forms of animal life including some marsupial mammal and early bird types), although some modern biome-types like grasslands only appeared very recently (during the Miocene epoch). MAK010115.
Late Cretaceous - Dr Ron Blakey'sGlobal Earth History
