Precambrian Era

 Large basins were formed, eventually filled with water (oceans)  The crust was formed and was split into 'plates’  Oceans became home to bacteria which eventually put oxygen into the water  Lots of volcanic activity and mountain building; the Canadian Shield is made Precambrian Era

 The Precambrian era ends with a global ice age and life-forms more complicated than bacteria were evolving Precambrian Era

 Fish, amphibians and reptiles all evolved during this era  Life started in the oceans but moved onto land  Great forests of primitive forests covered the continents  The Appalachian mountains are made  Africa was down near the south pole Paleozoic Era

 The Paleozoic era ends with a mass extinction called ‘the Great Dying’  70-95% of all species went extinct  Scientists don’t know exactly why, it could have been rapid climate change, or an asteroid hitting Earth  The continents are now all part of Pangaea Paleozoic Era

 Pangaea breaks apart  Called the ‘Age of the Dinosaurs’ Mesozoic Era

 Lived million years ago  30 feet long Mesozoic Era

An extinct kind of crocodile, the largest crocodile ever It lived 112 million years again Africa and South America It was almost twice as long as the modern crocodile and weighed up to 8 tons and was 38 ft long Mesozoic Era

 It is the largest dinosaur ever  It lived million years ago  Was about feet long Mesozoic Era

 It lived million years ago  40 feet long  One of the largest land predators ever Mesozoic Era

 The Mesozoic Era ends with another mass extinction, most of the dinosaurs killed off Mesozoic Era

 The continents move into their current positions  Called the ‘Age of Mammals’ Cenozoic Era

 An extinct snake that lived approximately 60– 58 million years ago  It was the largest, longest, and heaviest snake ever discovered  It reached a maximum length of 40 to 50 ft and weighed about 2,502 lb  Lived in South America Cenozoic Era

The largest land mammal ever It weighed 12 tons, and was 16 ft tall at the shoulders and 26.2 ft long It was an extinct type of gigantic hornless rhinoceros-like mammal Lived 33.9 million to 23 million years ago Cenozoic Era

An extinct type of giant ape It lived 9 million years ago to 100,000 years ago The largest ape ever, it stood nearly 10 feet tall and weighed over half a ton Cenozoic Era

An extinct kind of giant turtle, the biggest turtle ever It lived in South America about 6 to 5 million years ago Its shell was 11 ft long Cenozoic Era

A type of elephant-sized sloth, it lived in Central and South America Lived 3 million years ago until 10,500 years ago One of the largest land mammals ever Weighing up to 4 tons and up to 20 ft in length ( Cenozoic Era

The biggest rodent ever, an extinct kind of South American giant rat It lived 4 to 2 million years It weighed 2,200 lbs and was 10 feet long Cenozoic Era

An extinct kind of giant rhinoceros Lived 2.6 million years ago to 50,000 years ago It was the size of a mammoth and is thought to have had a large, thick horn on its forehead Cenozoic Era

The best known saber- toothed cat It lived in North America 2.5 million years ago–10,000 years ago Cenozoic Era

 2.3 to 1.4 million years ago  It stood 3-4 feet tall and had super long arms compared to modern humans  They had small brains but used primitive stone tools Cenozoic Era

 1.8 million years ago – 10,000 years ago  Lived in North America  Like a modern gray wolf except much bigger, 5 feet long Cenozoic Era

 1.8 million years ago - 143,000 years ago  It started to look like modern humans  Found outside of Africa in Eurasia  Its brain was a bit smaller, they stood nearly 6 feet tall  They discovered fire ad were fully bipedal  They evolved from Homo Habilis Cenozoic Era

 It lived in Africa, Europe and western Asia from 600,000 years ago to 200,000 years ago  It went extinct  They are our ancient cousin but probably not our ancestor  They were very tall, around 7 feet tall Cenozoic Era

 Lived 600,000 years ago – 35,000 years ago  Lived in Western Europe and central Asia during the Ice Age  They are not our direct ancestor and went extinct  Theories say they probably mated with Homo Sapiens, many people have small percentage of Neanderthal DNA  They made tools and had a language Cenozoic Era

 Lived in North America 340,000 years ago – 11,000 years ago  One of the largest types of cat ever Cenozoic Era

 They evolved from Homo Erectus about 200,000 years ago  They had a language, complicated tools, and complex social structures Cenozoic Era

A bit bigger than modern elephants, they stood 9-11 feet tall at the shoulder and weighed up to 6 tons The woolly mammoth was well adapted to the cold environment during the last ice age. It lived at the same time as early humans, who hunted it for food and for its tusks Lived from 150,000 years ago to just 10,000 years ago, when it died off from climate change and hunting by humans Isolated populations survived on Wrangel Island in northern Russia until 4,000 years ago It has been proposed the species could be recreated through cloning Cenozoic Era

 Lived 95,000 – 17,000 years ago  An extinct ancient cousin of ours  They used stone tools and fire and hunted dwarf elephants also found on the island in Indonesia  They were only 3 feet tall and nicknamed ‘hobbits’ Cenozoic Era

 An extinct flightless bird that lived on the island of Mauritius in the Indian Ocean  Humans destroyed their habitat and food source  The pigs and dogs that we introduced to the island also killed many of them  The last dodo died sometime in the late 1600s Cenozoic Era

 It looked like half tiger half dog  It lived on the island of Tasmania off Australia  The tiger was hunted to extinction by humans  The last one was caught in 1933 and died three years later in a zoo Cenozoic Era

 It lived in the Yangtze River in China  Humans had overhunted it  It was last seen in 2007 Cenozoic Era

 Modern humans are less hairy, we have smaller molars, and are taller  We still have leftovers from when we were monkeys, like goose bumps, extra ear muscles, wisdom teeth, a tailbone, and an appendix

 Try and guess what will happen to us. Think about how most modern humans live: indoors, much easier and sedentary lives, less exposure to elements  With a partner/small group, try and think of ways that humans might evolve in the future. What will happen to our bodies?

 We will all become the same race as we continue to intermarry

 As we rely more and more on medication to stay healthy, our immune systems will have less to do and become weaker

 Our muscles will get smaller as we move around less

 Human height has been growing rapidly for the last two centuries.  Over the last 150 years alone, the average height of the species has increased by 10cm.  It is believed that the main driving force behind this growth is the abundance of nutrition available to many of us

 Hair was originally to protect our bodies from the elements. But now we are not exposed to the elements as much, and we are becoming less hairy.

 Our teeth will get smaller  Evidence has shown that in the last 100,000 years alone, our teeth have halved in size

 Our other toes – especially the biggest – serve to aid balance and walking, our little toes serve no purpose, and humans can get by very well without them

 Some scientists are predicting that 2050 people could grow to be 120 years old