Dinosaurs first appeared in the fossil record in the early part of the Mesozoic Era known as the Triassic Period some 225 million years ago.
www.dinotreker.com/timeline.html www.dinotreker.com/timeline.html
Geologic Time; Precambrian; Paleozoic Era; Cambrian Period; Ordovician Period; Silurian Period; Devonian Period; Carboniferous Period; Mesozoic Era; Triassic Period; Jurassic Period; Cretaceous Period; Cenozoic Era; Tertiary Period; Quaternary Period; Geologic Timeline...
www.starsandseas.com/SAS%20Evolution/SAS%20geoltime/geo... www.starsandseas.com/SAS%20Evolution/SAS%20geoltime/geotime_mesozoic.htm
BobAinsworth.com - The Mesozoic Era. An illustrated geological time line for the Mesozoic era, which includes the Triassic, Jurassic and Cretaceous periods. ... The Cretaceous period, which begins 144 million years ago and spans 79 million years. It is the closing period of the Mesozoic era, and is also the longest period...
www.bobainsworth.com/fossil/mesozoic.htm www.bobainsworth.com/fossil/mesozoic.htm
The Cenozoic Era spans some 65 million years, beginning 65 million years ago with the Palaeocene epoch. ... The Cenozoic Era is divided into the Palaeogene period (which consists of the Palaeocene, Eocene and Oligocene epochs), the Neogene period (which consists of the Miocene and Pliocene epochs) and the Quaternary...
www.bobainsworth.com/fossil/cenozoic.htm
Fireworks Splice HTML ... The first reptiles appeared during the Palaeozoic Era (570 million to 245 million years ago), just before the; Mesozoic Era ... for a timeline with information about each era...
www.kidcyber.com.au/topics/dino_eras.htm www.kidcyber.com.au/topics/dino_eras.htm
The Mesozoic Era ... (248 - 65 million years ago) Ages of the Mesozoic Era ... Dinosaur timeline...
www.enchantedlearning.com/subjects/dinosaurs/mesozoic/ www.enchantedlearning.com/subjects/dinosaurs/mesozoic/
Join Enchanted Learning ... Cenozoic Era ... Paleozoic Era Paleozoic Era...
www.enchantedlearning.com/subjects/Geologictime.html
An intro to the Mesozoic era, includes a review of each of the geological sub-divisions and the various forms of life that lived during this time ... The Mesozoic Era - 1...
www.palaeos.com/Mesozoic/Mesozoic.htm www.palaeos.com/Mesozoic/Mesozoic.htm
An overview of the era from the UC Berkeley Museum of Paleontology. ... Click on the buttons below to learn more about the Mesozoic Era. ... The chart at left shows the three major subdivisions of the Mesozoic Era. This chart is mapped to take you to each of these subdivisions.
www.ucmp.berkeley.edu/mesozoic/mesozoic.html www.ucmp.berkeley.edu/mesozoic/mesozoic.html
Dinosaur Dig | Kids' Habitat ... © San Diego Natural History Museum ... Mesozoic Era Time Line...
www.sdnhm.org/kids/dinosaur/meso-print.html