what are the four types of trace fossils?
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Known as trace fossils, these include footprints, trackways, and coprolites (fossil poo!). Footprints and coprolites are trace fossils - they show us how an animal lived.
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['Xylophone.', 'X-ray.', 'Xmas tree.', 'Xystos.', 'Xylems.', 'Xiaosaurus (a type of dinosaur)', 'Xavier.', 'X-ray fish.']
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There are 6 types of fossils. They are body, trace, cast and mold, living, s carbon film, and petrified wood. All of them have a way of bringing us back to the past and helping scientists gain more knowledge.
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['Carnotaurus. [02:46]', 'Pentaceratops. [03:57]', 'Indominus rex. [07:00]', 'Allosaurus. [10:47]', 'Deinonychus. [14:08]', 'Brachiosaurus. [14:52]', 'Spinosaurus. [16:56]']
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Evolution over time can follow several different patterns. Factors such as environment and predation pressures can have different effects on the ways in which species exposed to them evolve. shows the three main types of evolution: divergent, convergent, and parallel evolution.
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The four main ERAS are, from oldest to youngest: PreCambrian, Palaeozoic, Mesozoic and Cenozoic. Periods are a finer subdivision in the geological time scale.
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Five types of evidence for evolution are discussed in this section: ancient organism remains, fossil layers, similarities among organisms alive today, similarities in DNA, and similarities of embryos.
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The five most often cited types of fossils are mold, cast, imprint, permineralization and trace fossils.
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['Ankylosaurus.', 'Brachiosaurus.', 'Ceratosaurus.', 'Corythosaurus.', 'Parasaurolophus.', 'Pteranodon.', 'Spinosaurus.', 'Stegosaurus.']
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['Human.', 'Dodo.', 'Dilophosaurus.', 'Kairuku.', 'Oviraptor.', 'Lystrosaurus.', 'Compsognathus.', 'Mesopithecus.']
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['Carnotaurus.', 'Death Worm.', 'Fire Wyvern.', 'Leedsichthys.', 'Megalodon.', 'Mosasaurus.', 'Raptor.', 'Tusoteuthis.']
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Tracks, burrows, eggshells, nests, tooth marks, gastroliths (gizzard stones), and coprolites (fossil feces) are examples of trace fossils or ichnofossils. Trace fossils represent activities that occurred while the animal was alive. Thus, trace fossils can provide clues to diet and behavior.
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['Track: an impression made by a single foot.', 'Trackway: a number of tracks made during a single trip.', 'Trail: an impression made by an animal without legs.', 'Burrows: a hole or holes an animal dug into loose sediment (like mud).', 'Borings: a hole or holes an animal dug into a hard substrate (like wood or rock).']
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['Precambrian Time: 4.6 billion to 542 Million Years Ago. John Cancalosi / Getty Images. ... ', 'Paleozoic Era: 542 Million to 250 Million Years Ago. Jose A. ... ', 'Mesozoic Era: 250 Million to 65 Million Years Ago. Science Library / Getty Images. ... ', 'Cenozoic Era: 65 Million Years Ago to the Present.']
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['Tarbosaurus. [02:09]', 'Alice Andesaurus. [02:30]', 'Allosaurus. [03:13]', 'Tyrannosaurus Rex Gen. [03:29]', 'Tyrannosaurus Rex. [04:04]']
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There are four different types of heterotrophs which include herbivores, carnivores, omnivores, and decomposers.
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['475 MILLION YEARS AGO.', '362 MYA.', '290 MYA.', '130 MYA.']