Maslaneck – Flashcards
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The first dinosaurs appeared in what time
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Triassic Period
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When large dinosaurs lived on Earth
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Jurassic Period
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The southern part of Pangea is known as
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Gondwanaland
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The era of recent life
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Cenozoic
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Life forms became isolated when the continents began to
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Break Up
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True or False: 10,000ya dinosaurs became the dominant land animal
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False
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Early (???) may have caused the extinction of some other animals
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Humans
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One of the most important fossils for determining age from the Palezoic era is what
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Fish
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True or False: The next smaller division of geological time after the era is epoch
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...
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Which era in the geological time scale lasted the longest?
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Precambrian
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Which era is the oldest
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Precambrian
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What is thought to be one of the earliest forms of life on Earth?
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Stromatolite
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What appeared in the atmosphere that allowed more complex organisms to develop?
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Oxygen
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What kind of animals developed near the end of the first era?
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Reptiles
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What name was given the second of Earths eras?
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Mesazoic
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What covered most of Earths surface at the beginning of the second era
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Lava
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What familiar marine life form evolved during this era
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Reptiles
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What type of animal evolved that lived out of water but reproduced in water
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Amphibians
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What mountain chain was caused by the collision of the Eurasian or African continental plates with the North American plate?
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Appalachian
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What type of animal is thought to have developed after the evolution of an egg that would not dry out on land?
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Reptiles
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The formation of swamp vegetation are the bald for what fossil fuel?
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Coal
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How old is Earth?
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4.56 billion years ago
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Which span of geological time spans covers about 88 percent of Earths history?
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Precambrian
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Which of the following gases was NOT part of Earths original atmosphere?
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Oxygen
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What is the major source of free oxygen in the atmosphere?
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Green Plants
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According to the Precambrian rock record, much of Earths first free oxygen combines with what?
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Iron
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How far back does the fossil record extend?
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3.5 Billion Years
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The most common Precambrian fossils are layered mounds of calcium carbonate called what?
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Stromatolites
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Which era immediately follows the Precambrian
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Paleozoic
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When did abundant fossil evidence first appear in the geological time record?
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540 Million years ago
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What happened to all the continents by the close of the Paleozoic?
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Fused into Pangea
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In the early Paleozoic, life was restricted to the what?
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Seas
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What appearance in animal evolution marked the beginning of the Cambrian?
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Hard Parts
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What event may have triggered the great Paleozoic extinction?
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Mantle Plume
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Hard parts helped animals to (???) themselves
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Protect
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During which era did the supercontinent Pangea began to begin to break up?
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Mesozoic
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The Rocky Mountains began to form as the North American plate overrode which plate?
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Pacific Plate
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What animals dominated the Mesozoic Era?
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Dinosaurs
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What were the first true terrestrial animals?
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Reptiles
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Which animals did NOT survive the Mesozoic extinction?
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Dinosaurs
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What likely contributed to the extinction THAY marks the end of the Mesozoic Era?
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Meteorite Collision
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The current geological period is called...?
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Quaternary
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What caused many events of mountain building, volcanism, and earthquakes in western North America during the Cenozoic?
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Plate Interactions
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Throughout the Cenozoic, most of North America was what?
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Above sea level
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Which title best describes the current geological age?
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Age of Mammals
