Geological Timelines Scientific consensus informs us that the Big Bang occurred about 14 billion years ago. Out of the swirling cosmic dust, the process of accretion formed our solar system about 4.5 billion years ago. As you can see from the Timeline chart of the earth, time is measured in eons, eras, periods, and epochs. “Ma” in the header column indicates millions of years ago (sometimes written as Mya). Throughout history, the earth has alternated between glacial periods in which enormous masses of ice covered much of the earth’s land mass, and interglacial periods when the glaciers melted,
Evolution of Man │ Dinosaur Timeline PALAEOZAIC ERA (pronounced as: pall-ay-oh-zoh-ick) PRECAMBRIAN (more than 4600 Million years ago) Which includes the Proterozoic eon and the Archean eon spanning about 2000 years each, that single celled organisms like blue-green algae and bacteria first appeared. Towards the end of the archean eon the first multicellular, soft bodied animals began to emerge such as jellyfish, sea pens, and worms. CAMBRIAN (more than 570 Million years ago) The cambrian period of the Paleozoic era was characterized by adverse eruption of life in the seas. Life had not yet evolved on land. - Trilobites (lengths up to 2 feet) - Green and Red Algae - Gastropods - Segmented worms - Corals - One-celled animals - Shellfishes ORDOVICIAN (more than 500 Million years ago) During the early Ordovican period the first vertebrate fish have been found. Graptolites and corals also flourished. The first nautiloids appeared. - Radiolarians - Starfish - Coral - Jelly fish SILURIAN (more than 436 Million years ago) The appearance of the first plants on land. Algae is an abundance in the seas, as well as marine invertebrates - Spider - Sponge - Eurypterid (giant sea scorpions) DEVONIAN (more than 436 Million years ago) The first amphibians appeared. As the Palezoic era continues, we see the first appearance of land creatures, such: - mites - ammonites - crabs - ground insects - spiders Towards the end of the Devonian period, amphibians began to colonize the land. The first ferns also grew and true seed plants eventually emerged. The Devonian period also saw many new groups of fish evolve. - Placoderm - Ichthyostega CARBONIFEROUS (more than 350 Million years ago) Great swamp forests covered the land. Insects and spiders appeared. During this period snakes emerged as well as salamander type amphibians. Large amphibians roamed the lands now and fresh water fish and shark were now in abundance. Near the end of this period the first reptiles appeared on land. - Insect - Pleuracanth PERMIAN (more than 270 Million years ago) The first sailback reptiles. The Permian Period, at the end of the Palezoic era, marked a great changes in the Earth's climate and appearance. Trilobites and other marine groups became extinct, and the group of small reptiles (diapsids) abound. These were the ancestors to most modern reptiles and the ruling dinosaurs as well as pterosaurs and crocodiles. Thriving also, were the early ancestors to mammals (synapdia), which included some large reptiles such as dimetrodon. Reptiles grew to dominance among vertebrates, because their special adaptations enable them to flourish in the drier climate. The warm zone spread in the northern hemisphere, where extensive dry desert appeared. The rock formed at that time are stained red by iron oxides, the result of intense heating by the sun of a surface devoid of vegetation cover. The old types of plants and animals dried out. - Dimetrodon - Eryops ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ MEROZAIC ERA (pronounced as: mezo-zay-ick) TRIASSIC (more than 225 Million years ago) All the continents were joined together in one huge landmass. Climate was hot and dry but with rain seasons. The first Tree Ferns and Coniferous trees were starting to appear. As the Mesozoic era begins, we see the rise of the what is known as the dinosaurs. Pterosaurs (flying reptiles) also made their first appearance here as well as : - Coelophosis - Crocodiles - Diplodocus - Euskelosaurus - Frogs - Mammals - Turtles During the late Triassic period, many small mammals also arose. JURASSIC (more than180 Million years ago) The earliest known birds appeared (e.g. Archaeopteryx) The climate change as the huge continent was breaking up. There were now forests of cycads, conifersand gingko. The Jurassic period began the Age of Ruling Reptiles. During this period, vegetation was greener and more lush. By late Jurassic, huge dinosaurs walked the lands such as: - Archaeopteryx - Allosaurus - Brachiosaurus - Ceratosaurus - Rhamphorhynchus - Stegosaurus - Brachiosaurus - Tyrannosaurus CRETACEOUS (more than 135 Million years ago) The Cretaceous period of the Mesozoic era may have seen more dinosaurs than ever before, like the: - Ankylosaurus (heavyly armoured shell) - Centrosaurus - Duckbilled Parasaurolophus - Muttaburrasaurus - Quetsalcoatlus - Triceratops (3 horned dinosaurs) - Tyrannosaurus (carnivorus and savage) Birds became increasingly numerous and flowering plants were emerging. By the end of the Cretaceous period, all large and small ruling reptiles, except the crocodile went extinct. The continents has separated and each has its own flora and fauna. However, Australia and Antarctica were still joined together. There were now flowering plants such as magnolias and waterlilies. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ CENOZOIC (pronounced as: sen-oh-zoh-ick) during many different species of animals appeared. This era ended with the Great Ice Age and the appearance of the first humans TERTIARY (more than 63 Million years ago) Part of the Cenozoic era, the Tertiary period is divided into five epochs: • Paleocene • Eocene • Oligocene • Miocene • Pilocene During this time mammals diversified quickly. Some examples are marsupials, insectivores, bears, hynas, dogs, cats, seals, walruses, whales, dolphins, early mastodons, hoofed mammals, horses, rhinoceroses, hippopotamuses, oreodonts, rabbits, monkeys, lemurs, apes, and humans (Australopithecus). - Mammoth - Sabre-Toothed Tiger - Eohippus QUATERNARY (recent to more than 8 Million years ago) Quaternary period was the second and last period of the Cenozoic era. This period is divided into two (2) epochs: • Pleistocene • Holocene Mammoths roamed the lands. Cattle, deer, and of course, Homo Habilis, Homo Erectus, and Homo sapiens.
bibliodyssey.blogspot.com/2010/04/time-after-time.html
Prehistoric is a hands-on store showcasing the finest minerals, fossils, and meteorites. Check out our Following the Geological Timeline page.
Objectives for creating timelines:To present a chronological sequence of related events along a drawn lineA fast ‘snapshot’ of time, people and eventsCreating a Timeline – A verti…
Since we've already looked at everything that's more important, let us now turn to the Cenozoic mammals of the wonderful Private Lives of An...
Dinosaurs roamed the planet for about 165 million years, during a time in the Earth’s history called the Mesozoic Era. It is difficult to imagine how
History of Earth for Kids: The Montessori Second Great Lesson. Interdisciplinary. Story of Life, Clock of Eras, Earth, Water, Botany, & more.
Hand drawn illustrations make this parchment toned poster a beautiful addition to any home, classroom, studio, or office in this very convenient 2 ft by 5 ft size. The WORLD HISTORY TIMELINE depicts 5,000 years of major historical events in this unique, easy to use staircase format. The research that went into the WORLD HISTORY TIMELINE highlights what many scholars agree are some of the most significant historical eras and events since prehistoric times. Students of all ages can use this invaluable and beautiful reference tool. Every image and line has been hand etched in scratch board to make this not only an invaluable educational reference tool but also a beautiful work of art. The WORLD HISTORY TIMELINE Poster compliments any WORLD HISTORY curriculum, AP WORLD HISTORY, and IB WORLD HISTORY.
Evolution - Biogeography, Adaptation, Species: Darwin also saw a confirmation of evolution in the geographic distribution of plants and animals, and later knowledge has reinforced his observations. For example, there are about 1,500 known species of Drosophila vinegar flies in the world; nearly one-third of them live in Hawaii and nowhere else, although the total area of the archipelago is less than one-twentieth the area of California or Germany. Also in Hawaii are more than 1,000 species of snails and other land mollusks that exist nowhere else. This unusual diversity is easily explained by evolution. The islands of Hawaii are extremely isolated and have had
This is a Montessori three part card activity that goes along with the Timeline of Life. As the students study the Timeline, sea life starts to become more complex and these cards will allow them to become more familiar with some of the creatures such as the ichthyosaur, henodus, and the frilled shark. The cards include: -Name Labels -Pictures of the creatures with and without name labels -Information cards stating the time period the animal evolved in, its size, and a fast fact. -Animals included (10 in all): elasmosaurus, metriorhynchus, tylosaurus, ichthyosaurus, nothosaurus, frilled shark, basilosaurus, dolichorhynchops, liopleurodon, and henodus. I also purchased 3D renditions of the animals for the students to match to the cards from the TOOB company on Amazon. It may be ordered here: https://www.amazon.com/Safari-Ltd-Prehistoric-Life-TOOB/dp/B0031MSYHK/ref=sr_1_1?s=toys-and-games&ie=UTF8&qid=1492716499&sr=1-1&keywords=prehistoric+sea+life+toob
Free dinosaur timelines and time scales for kids you can use at home and in the classroom. Includes a timeline showing when Jurassic Park dinosaurs lived.
Coloring pages also make excellent report covers or notebook section dividers for older students. Click here to download junior level coloring pages – Prehistory – (Samples) …
Since we've already looked at everything that's more important, let us now turn to the Cenozoic mammals of the wonderful Private Lives of An...
For 300,000 years, our species lived in hunter-gatherer societies; a highly social lifestyle that explains the origins of language.
A detailed, illustrated timeline from the Stone Age to 1066, ideal for Key Stage 2 history lessons.
