Cretaceous+Polarbear16

= __Did you know that dinosaurs were destroyed by a mass extinction?__ = = During the Jurassic period, there were dinosaurs as small as a chicken and as large as a whale. Dinosaurs dominated the land. The sea level was high and continents were just starting to break apart. Also volcanic activities were beginning. In the Cretaceous period, dinosaurs continued to dominate, mammals continued to evolve and flying reptiles were evolving into the first birds. Flowering plants started to appear. In the Tertiary, some mammals survived the mass extinction along with some plants and other animals, but all of the dinosaurs died (except for the birds). = = = = When the asteroid hit Earth, the impact threw huge amounts of dust and water vapor into the atmosphere. The plants had no sun, the planet got colder.Volcanic activities happen and the North and South Poles started to build up ice.Land animals and plants weren’t the only ones who died, organisms in the ocean died to o. =
 *  __Cretaceous Time Period__ ** “The End Of The Dinosaurs”

= = = = = = = = = = = = = = = = = __Did you know that the land is always moving?__ = = = = Land is always moving, but the thing is that you never see it. In my case most of the land were above and below the equator. In the Cretaceous time period Massachusetts was in the same place that it was before my time period. In the Cretaceous, the climate in the winter was hot and in the summer it was cold. Dinosaurs that were found in Alaska didn’t have no problem living in the cold. Additionally seasons began to grow more extreme as the global climate became cooler. Pretty much the latitude and the longitude is the same as is it today. =

= __Have you ever th____ought ab__ __out where in our planet fossils are found?__  = = There are a lot of fossils, I pick 3 kinds of fossils that I thought they were interesting. The 3 fossils that pick was Castorid it came from Michigan, Brontotheriidae it came from South Dakota and the last one was Eucrotaphus trigocephalus and it came from Oregon. Most fossils are found in Earth that once lay underwater. The fossils are the shape of these hard parts in the rock. Rocks were found in Canada. Dinosaur’s fossils have been found on every continent. Most fossils are always together with rocks. In the Cretaceous period the landforms are forming India, but haven’t not form North America and Europe. This section is mostly about of what landforms are forming and what kind of fossils are in my time period. =

= __Did you know what types of life forms were in the Cretaceous Period?__ = = A dominant life form during the Cretaceous were the dinosaurs. Also there were new life forms like flowering plants. There were different type of plants like Ficus trees, pine trees and magnolias. The different type of animals were the dinosaurs, flying and swimming reptiles. =

= = = = = = = = = = = = = = =  In the Cretaceous period there were both invertebrates and vertebrates. There were dinosaurs like chasmosaurus, albertosaurus, Deinonychus and leidyosuchus. The notorioua carnivore that lived during the Cretaceous was tyrannosaurus rex. The famous herbivores were triceratops and hadrosaurs. =

=Links:= Bibliography =My Reflection= =Two external links=