indicate dinosaurs were more similar to mammals and birds rather than cold-blooded animals‚ such as reptiles. Evidences will be shown with comparison among dinosaurs‚ warm-blooded animals and cold-blooded animals. Thus‚ conclusion will be drawn to suggest that dinosaur were more likely to be endotherms. Introduction: Dinosaurs‚ as dominating animals in the Mesozoic Era and were extinct at the end of Mesozoic‚ raised a heated debate
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snails‚ clams‚ squids‚ and trilobites. This era is where the first animals with backbones appeared. During this era‚ plants and animals began to colonize land unlike before when most organisms lived in the oceans. At the end of the Paleozoic era‚ reptiles and some insects appeared. Many plants like giant ferns‚ club mosses‚ and conifers began to grow in this era. An era officially ends with a mass extinction. The Paleozoic era ended with the largest mass extinction known of. Almost 90% of the life
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Chapter 11 The first Paleozoic orogeny to occur in the Cordilleran mobile belt was the: | c. Antler | | Extensive cratonic black shales were deposited during what two periods? | d. Late Devonian-Early Mississippian | | The main economic deposit of a cyclothem is: | a. coal | | During the Late Kaskaskia (Cratonic Sequence 3)‚ what type of deposition predominated on the craton? | e. carbonates | | Which orogeny was not part of the closing of the Iapetus Ocean
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known for many large mammals such as mammoths and their cousins the mastodons[->0]‚ long horned bison‚ saber-toothed cats‚ giant ground sloths‚ and many other large mammals including humans.|2.6 million to 11‚700 years ago| Jurassic Period of the Mesozoic Era|Dinosaurs dominated the land fauna but the Jurassic also saw the origination of the first birds. Also a lot of sea life such as modern looking sharks and rays and giant marine crocodiles. |199.6 to 145.5 million years ago| Ordovician Period
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begins with Precambrian Time. Precambrian time covers approximately 88% of Earth’s history. FOUR Eras… * PRE-CAMBRIAN – 88% of earth’s history * Paleozoic (ancient life) * 544 million years ago…lasted 300 million yrs * Mesozoic (middle life) * 245 million years ago…lasted 180 million yrs * Cenozoic (recent life) * 65 million years ago…continues through present day Today… * Today we are in the Holocene Epoch of the Quaternary Period of the Cenozoic
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Dinosaur Energy Ever since the discovery of the first dinosaur in 1824‚ scientists and laymen alike have been fascinated by the lives of these awe-inspiring prehistoric reptiles. How did they live? What were their insides like? How fast did they go? At the heart of these and many other such questions about these “terrible lizards” is the main controversy: were dinosaurs warm or cold-blooded? This complex scientific issue relates deeply to understanding the biology and lifestyles of these creatures
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Evolutionary biologists believe that birds evolved from reptiles. Their skeletal structure and blood cells of today’s birds share a surprising foundation with reptiles. According to biologists‚ feathers may have evolved from the scales of reptilian skin‚ also. From 144 million to 66 million years ago‚ during the Mesozoic era‚ the first birds began to evolve. Fossils from this time showed that early birds had teeth. Tens of millions of years ago‚ a group of birds called kites evolved. Early kites
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The respiratory system: Comparing the lung structure of alligators and birds. Vishnu Mohan 3224328 Section 15 The respiratory system: Comparing the lung structure of alligators and birds I. Introduction II. Background information on the alligator * Archosaurs gave rise to the alligator sharing similar characteristics to the bird and have shown to have unidirectional airflow. (Claessens‚ 2004) * In alligators the air loops in a single direction through aerodynamic valves
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Jurassic period and what evidence is there to support it? How did the environment and climatic conditions impact the evolution of the species? What ultimately resulted in the extinction of the species? The Jurassic Period‚ also known as the Age of Reptiles‚ and is marked from the end of the Triassic period to the beginning of the Cretaceous period; the time frames within this period are broken down into Early‚ Middle and Late Jurassic. There are three main extinction events in the life of the dinosaurs
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The Alps are the youngest and highest mountain system in Europe. They stretch across the western and southern part of the continent in a broad arc. The mountain range startsnear the Mediterranean Seaon the border between France and Italy. Then it curves north- and eastward through northern Italy‚ Switzerland Liechtenstein‚ southern Germany‚ Austria and Slovenia. The Alps are about 1‚000 km long‚ the broadest section over 260 km wide. The highest peak‚ Mont Blanc‚ situated on the border between
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