Questions and Answers
What does the word 'dinosaur' mean?
Terrible lizard
How long did dinosaurs roam the earth?
More than 150 million years
Dinosaurs lived in which era?
Mesozoic era
What does 'Mesozoic' mean?
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What are the three periods of the Mesozoic era?
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What type of class were dinosaurs?
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What was the time range of the Mesozoic era?
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What was the time range of the Triassic period?
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What period came before the Triassic?
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What period came after the Triassic?
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What is the time range of the Jurassic period?
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What is the Jurassic period known as?
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What came before the Jurassic period?
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What came after the Jurassic period?
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What was the longest period of the Mesozoic era?
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What is the time range of the Cretaceous period?
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Cretaceous-Paleogene Extinction (K-Pg) is also known as?
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What ended the Mesozoic Era?
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How long was the Mesozoic Era?
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What extinction happened before the Mesozoic Era?
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What are the two main types of dinosaurs?
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What does 'Ornithischia' mean?
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What does 'Saurischia' mean?
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Which way does the pubic bone point in Saurischians?
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Which way does the pubic bone point in Ornithischians?
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What does 'theropod' mean?
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What are the characteristics of theropods?
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Give an example of a theropod.
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What are the characteristics of sauropods?
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Give an example of a sauropod.
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What are the characteristics of Thyreophora?
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Give an example of Thyreophora.
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Theropods are a part of which higher classification?
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Sauropods are a part of which higher classification?
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Thyreophora are a part of which higher classification?
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Cerapods are a part of which higher classification?
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What are the characteristics of cerapods?
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Give an example of a cerapod.
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Birds evolved from which classification of dinosaur?
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What is a dromeasaur?
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Give examples of dromeasaur.
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Study Notes
Dinosaur Overview
- The word "dinosaur" translates to "terrible lizard."
- Dinosaurs roamed the Earth for over 150 million years during the Mesozoic Era.
Mesozoic Era
- The Mesozoic Era is known as the "Middle Life," spanning from 251 million years ago (mya) to 65 mya.
- It consists of three periods: Triassic, Jurassic, and Cretaceous.
Triassic Period
- Lasted from 252.17 mya to 201.3 mya (approximately 51.04 million years).
- Preceded by the Permian period.
Jurassic Period
- Spanned from 201.3 mya to 145.5 mya (about 55.8 million years).
- Known as the "Age of Reptiles," following the Triassic period.
Cretaceous Period
- The longest period of the Mesozoic Era, lasting from 145.5 mya to 65.5 mya.
- Ended with the Cretaceous-Paleogene extinction (K-Pg), also known as the K-T Extinction.
Extinctions
- The KT Extinction marked the end of the Mesozoic Era.
- Prior to the Mesozoic Era, the Permian/Triassic (P/Tr) extinction occurred.
Dinosaur Classifications
- Dinosaurs are classified as reptiles and fall into two main groups: Ornithischian (bird-hipped) and Saurischian (lizard-hipped).
- In Saurischians, the pubic bone points forward; in Ornithischians, it points towards the back.
Theropods
- Theropods, meaning "beast foot," are characterized by being meat-eaters with two powerful legs and short arms.
- An example of a theropod is Tyrannosaurus Rex.
Sauropods
- Known for long necks, long tails, and four pillar-like legs with small heads comparatively.
- An example of a sauropod is Brachiosaurus.
Thyreophora
- Walk on four legs and possess bony plates or spikes; an example is Stegosaurs.
Higher Classifications
- Theropods and sauropods belong to Saurischia.
- Thyreophora and Cerapods comprise Ornithischia.
Cerapods
- Cerapods can walk and run and do not fit into the other three categories; an example is Iguanodon.
Evolution of Birds
- Birds evolved from theropods, a classification of Saurischia.
Dromeasaur
- Dromeasaurs are a family of feathered theropods, typically small to medium-sized carnivores.
- Notable examples include Velociraptor, Utahraptor, and Deinonychus.
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Description
Explore the fascinating world of dinosaurs and the Mesozoic Era in this quiz. Learn about the different periods such as the Triassic, Jurassic, and Cretaceous, as well as significant extinctions that shaped the history of life on Earth. Test your knowledge of these ancient creatures and their environment.
