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Time Period The c retaceous period introduces very extradionary dinosaurs and interesting changes between j urassic. During the c retaceous period the dinosaurs started to evolve which is why its given the name "Age of the dinosaurs " also something important that happened was that the first flowering plants appeared. Before my period the first flying dinosaurs appeared and [|Pangaea] started to break up this period was the [|jurassic]. After my period there was no dinosaurs but instead there were mamals, this period is the t ertiary. Overall during the c retaceous, the dinosaurs became much fierce and more powerful l and this periods main event was the evolution of the dinosaurs, because these dinosaurs have more features than the ones in the other periods. Abiotic The abiotic during the c retaceous was very hard to understand and the locations of the landmasses are way different to where they are now in days. The continents were separate from eachother but slowly moved into the posistion that we know now today.The Cretaceous was a period with a relatively warm climate and high eustatic sea level. The oceans and seas were populated with now extinct marine reptiles, ammonites and the land by dinosaurs. The Cretaceous ended with one of the largest mass extinctions in Earth history, the K-T extinction, when many species, including the dinosaurs, pterosaurs, and large marine reptiles, disappeared .The climate during the cretaceous was very hard to understand, because it went from cold to warm and was always changing and with the changing shape of the continents Global weather also changed. On land the climate was still warm and the changed in plants and animals started to follow a pattern. Europe was a series of islands, and North America was split by and island seaway and MA was on the other side of the seaway. The diversity among the plants and animals increased as they evolved on separate landmasses. The abiotic of the cretaceous is different to what it is now in days ovbiously. Abiotic/Landforms In the past there was a different geography and many dinosaurs which now in days are fossils. There are many wierd fossils found for this period like the [|Kronsaurous], Dilopasur, and the charcnarodon. South America and Africa seperated slowly from south to north creating the south atlantic ocean. During this period the flowering plants first appeared. During the cretaceous the worlds major landmass continued to subdivide into smaller continents, this breakup was driven by a movement deep within the earths mantle, which weakened the crust and created a volcanic ridge. There is many abiotic things during the cretaceous. Biotic The biotic includes, invertebrates, vertebrates and many wierd plants. The [|flowering plants] were first seen in the cretaceous, there were many plants during this period. The palm tree which for a long time was left with few woody species. The flowering plant spreed to the higher latitudes especially in the north. The saurpods were cluck - billed and armored herbivores and belonged to a group called titanosaurids. A dominiant carnivore was the tyranosaurs, short for t-re x. The t-rex was built for speed and is the biggest dinosaur that walked during the cretaceous. A invertebrate during the cretaceous was the snake, these snakes as we know now in day have no bones. The quetzaloctis is a vertebrate, because it has bones. This is a flying dinosaur but more evolved from the jurassic. These animals are way different from the ones now in days.