Банк рефератов содержит более 364 тысяч рефератов, курсовых и дипломных работ, шпаргалок и докладов по различным дисциплинам: истории, психологии, экономике, менеджменту, философии, праву, экологии. А также изложения, сочинения по литературе, отчеты по практике, топики по английскому.
Полнотекстовый поиск
Всего работ:
364139
Теги названий
Разделы
Авиация и космонавтика (304)
Административное право (123)
Арбитражный процесс (23)
Архитектура (113)
Астрология (4)
Астрономия (4814)
Банковское дело (5227)
Безопасность жизнедеятельности (2616)
Биографии (3423)
Биология (4214)
Биология и химия (1518)
Биржевое дело (68)
Ботаника и сельское хоз-во (2836)
Бухгалтерский учет и аудит (8269)
Валютные отношения (50)
Ветеринария (50)
Военная кафедра (762)
ГДЗ (2)
География (5275)
Геодезия (30)
Геология (1222)
Геополитика (43)
Государство и право (20403)
Гражданское право и процесс (465)
Делопроизводство (19)
Деньги и кредит (108)
ЕГЭ (173)
Естествознание (96)
Журналистика (899)
ЗНО (54)
Зоология (34)
Издательское дело и полиграфия (476)
Инвестиции (106)
Иностранный язык (62791)
Информатика (3562)
Информатика, программирование (6444)
Исторические личности (2165)
История (21319)
История техники (766)
Кибернетика (64)
Коммуникации и связь (3145)
Компьютерные науки (60)
Косметология (17)
Краеведение и этнография (588)
Краткое содержание произведений (1000)
Криминалистика (106)
Криминология (48)
Криптология (3)
Кулинария (1167)
Культура и искусство (8485)
Культурология (537)
Литература : зарубежная (2044)
Литература и русский язык (11657)
Логика (532)
Логистика (21)
Маркетинг (7985)
Математика (3721)
Медицина, здоровье (10549)
Медицинские науки (88)
Международное публичное право (58)
Международное частное право (36)
Международные отношения (2257)
Менеджмент (12491)
Металлургия (91)
Москвоведение (797)
Музыка (1338)
Муниципальное право (24)
Налоги, налогообложение (214)
Наука и техника (1141)
Начертательная геометрия (3)
Оккультизм и уфология (8)
Остальные рефераты (21692)
Педагогика (7850)
Политология (3801)
Право (682)
Право, юриспруденция (2881)
Предпринимательство (475)
Прикладные науки (1)
Промышленность, производство (7100)
Психология (8692)
психология, педагогика (4121)
Радиоэлектроника (443)
Реклама (952)
Религия и мифология (2967)
Риторика (23)
Сексология (748)
Социология (4876)
Статистика (95)
Страхование (107)
Строительные науки (7)
Строительство (2004)
Схемотехника (15)
Таможенная система (663)
Теория государства и права (240)
Теория организации (39)
Теплотехника (25)
Технология (624)
Товароведение (16)
Транспорт (2652)
Трудовое право (136)
Туризм (90)
Уголовное право и процесс (406)
Управление (95)
Управленческие науки (24)
Физика (3462)
Физкультура и спорт (4482)
Философия (7216)
Финансовые науки (4592)
Финансы (5386)
Фотография (3)
Химия (2244)
Хозяйственное право (23)
Цифровые устройства (29)
Экологическое право (35)
Экология (4517)
Экономика (20644)
Экономико-математическое моделирование (666)
Экономическая география (119)
Экономическая теория (2573)
Этика (889)
Юриспруденция (288)
Языковедение (148)
Языкознание, филология (1140)

Реферат: Tyrannosaurus Rex Essay Research Paper Sanders 1Brett

Название: Tyrannosaurus Rex Essay Research Paper Sanders 1Brett
Раздел: Топики по английскому языку
Тип: реферат Добавлен 08:33:22 09 ноября 2010 Похожие работы
Просмотров: 305 Комментариев: 13 Оценило: 2 человек Средний балл: 5 Оценка: неизвестно     Скачать

Tyrannosaurus Rex Essay, Research Paper

Sanders 1

Brett Sanders

Biology Block. 2

November 30, 1999

Tyrannosaurus Rex

The name says it all. This group of huge carnivores ruled the land during the Cretaceous period. Short but deep jaws, long hind limbs (legs), beady eyes, a long muscular tail, and tiny forelimbs (arms) make up a tyrannosaur. The Tyrannosauridae included such similar animals as Albertosaurus, Gorgosaurus, Daspletosaurus, Tarbosaurus, and of course Tyrannosaurus Rex. A tremendous skeleton of Rex now stands guard in the Valley Life Sciences Building in Washington. Tyrannosaurs belong to the Saurischia, or “reptile-hipped” dinosaurs. Within the Saurischia, tyrannosaurs belong to the group of carnivorous dinosaurs known as theropods. Traditionally, the tyrannosaurs have been included within the Carnosauria. In this classification scheme, carnosaurs represent the largest carnivorous animals to ever walk the land.

Since tyrannosaurs were so huge, you might ask how they could move all that weight around and hunt prey? In the modern dinosaur movie Jurassic Park, T.Rex is depicted moving extremely quickly, maybe 50 or 60 mph! Is this correct? Recently, scientists studied Jurassic Park to calculate the actual speed (using the length of the dinosaur’s strides) of T. Rex in the movie. They found that it was actually moving at a walking speed of about 12-mph (the jeep in the movie was supposed to be moving at about 40mph)! Many scientists familiar with the

Sanders 2

principles of biomechanics (physics applied to living organisms) think that tyrannosaurs could move fairly fast, maybe 10-20 mph, but not as fast as the smaller theropod dinosaurs. Smaller tyrannosaurs like Albertosaurus may have moved faster than the bigger ones like T. Rex. Some think that this was probably true for young tyrannosaurs, too. Yet, we still lack conclusive evidence that tyrannosaurs could even run. Some think that their body size limited them to only a fast walk, like an elephant.

Tyrannosaurs are surprisingly common in many North American fossil beds, especially their large, serrated teeth, which they shed periodically like most archosaurs. The teeth of tyrannosaurs are very interesting. Rather than being the flat knifelike blades as in most other carnivorous dinosaurs, they are more like giant spikes than razor-edged blades. With a mouthful of these murderous weapons, tyrannosaurs had a whopping bite, which might have made up for their reduced forelimbs. The bite marks of these teeth are quite recognizable on some dinosaur bones. Some tyrannosaur fossils show evidence of bite marks from other tyrannosaurs, suggesting that there might have been fierce fighting between tyrannosaurs, and even cannibalism. The rarest tyrannosaur fossils are those of T. Rex, making studying that animal particularly difficult. Most known dinosaurs are represented by only one good specimen, if that much. So T. Rex is not nearly the rarest fossil find of all.

Tyrannosaurus, being the most ferocious of the dinosaurs, weighed over seven-tons. Tyrannosaurus actually means “king of the tyrant lizards.” Tyrannosaurus was probably the

Sanders 3

largest land predator ever. It stood almost 20 feet tall on it’s rear legs. It had a massive tail, puny front legs, powerful jaws, and sharp seven-inch-long saw-edged teeth for tearing its prey. From nose to tail Tyrannosaurus measured up to 45 feet in length. It’s skull alone was nearly four feet long. These monstrous predators lived toward the very end of the age of dinosaurs. Some paleontologists believe Tyrannosaurus was a scavenger, but most believe it was a fierce hunter, swift on its back feet and ferocious in battle. It most likely preyed on packs of Duck-Billed Platypus as well as herds of the better-defended Triceratops.

Tyrannosaurus Rex lived during the Cretaceous period when both giant continents, Laurasia and Gondwana, began splitting. Mountains began growing and the seasons became more pronounced. Flowering plants spread and by the end of the Cretaceous period, oak trees, hickories, and magnolias were common in North America. The forests began to look almost modern. During this time toothless, bird-like dinosaurs appeared, as did the greatest of the meat-eaters, Tyrannosaurus. But the meat-eaters were matched by heavily armored plant-eaters, such as Triceratops and Ankylosaurus. Duck-billed dinosaurs with mouths designed for eating tough plants were also common. Large flying reptiles and waterbirds soared above the earth and there were many animals that are with us today; lizards, snakes, frogs, salamanders, and small mammals like possums could all be found. Then, 65 million years ago, it all came to an end. The dinosaurs died out completely and quickly, perhaps due to comets or a meteor striking the earth, or perhaps due to climate changes.

Sanders 4

In Summary, Tyrannosaurs Rex belonged to a group of dinosaurs called Carnivores, meaning flesh lizards. They were the kings of the dinosaur world. They had large, powerful back legs, small front arms, but fearsome claws and teeth. These dinosaurs were probably not unlike the predators we are familiar with today, such as lions and leopards. They probably hunted by themselves, preying on groups of smaller reptiles such as herds of herbivore. Their favorite prey was a most likely weak or slow member of a herd. It is widely believed that some carnosaurs hunted in packs. In this fashion it was possible for smaller carnosaurs to attack and kill much larger dinosaurs such as the enormous plant-eating sauropods.

Now you can more fully understand what a Tyrannosaurus Rex might have looked and acted like during this interesting period in time. Still to this day, Tyrannosaurus Rex is the largest and most feared dinosaur to ever walk the earth. Many scientists and paleontologists have spent their lives trying to figure out the story behind dinosaurs and more explicitly Tyrannosaurs Rex.

Sanders 5

1. http://www.DinoNet/T-Rex/search.com

2. http://www.Dinosaurs.com

3. http://www.TyranosaurusRex/habbitat/search.com

4. http://www.Fossoles/T-Rex/search.com

5. http://www.dinosite/t-rex/land/eating/preditors/.com

Оценить/Добавить комментарий
Имя
Оценка
Комментарии:
Привет студентам) если возникают трудности с любой работой (от реферата и контрольных до диплома), можете обратиться на FAST-REFERAT.RU , я там обычно заказываю, все качественно и в срок) в любом случае попробуйте, за спрос денег не берут)
Olya23:32:26 28 августа 2019
.
.23:32:25 28 августа 2019
.
.23:32:24 28 августа 2019
.
.23:32:23 28 августа 2019
.
.23:32:23 28 августа 2019

Смотреть все комментарии (13)
Работы, похожие на Реферат: Tyrannosaurus Rex Essay Research Paper Sanders 1Brett

Назад
Меню
Главная
Рефераты
Благодарности
Опрос
Станете ли вы заказывать работу за деньги, если не найдете ее в Интернете?

Да, в любом случае.
Да, но только в случае крайней необходимости.
Возможно, в зависимости от цены.
Нет, напишу его сам.
Нет, забью.



Результаты(258419)
Комментарии (3474)
Copyright © 2005-2020 BestReferat.ru support@bestreferat.ru реклама на сайте

Рейтинг@Mail.ru