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Questions and Answers
What does the term DINOSAURA refer to?
fearfully great reptiles like Megalosaurus, Iguanodon, and Hylaeosaurus
During which era did dinosaurs live?
Mesozoic era
Dinosaurs are completely extinct.
False
What percentage of species were extinguished during the K-T extinction?
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Which extinction event wiped out 90% of all species?
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The ______ extinction event is known as the Great dying.
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Study Notes
Avian Dinosaurs
- Avian dinosaurs are a highly successful and diverse group that evolved into various sizes and shapes with different lifestyles.
- The term DINOSAURA was coined by Sir Richard Owen in 1842, originally referring to three species: Megalosaurus, Iguanodon, and Hylaeosaurus.
- Dinosaurs thrived during the Mesozoic era, from the late Triassic period around 225 million years ago until the end of the Cretaceous period approximately 65 million years ago.
- Modern birds are classified as avian dinosaurs and are considered a lineage of reptiles, demonstrating that not all dinosaurs are extinct.
- Important considerations regarding dinosaurs:
- Size alone does not determine whether a creature is a dinosaur.
- Dinosaurs did not coexist at the same time; there were different periods of existence.
- Technically, dinosaurs exist today through their descendants—birds.
Extinction Events
- Evidence of dinosaur extinction was explored at UC-Berkeley in 1980.
- The K-T extinction event led to the extinction of 60% of species, marking a significant transition in biodiversity.
- The Permo-Triassic extinction, known as the Great Dying, resulted in the loss of 90% of all species due to severe global environmental changes.
- An earlier extinction event designated the Great Dying accounted for the extinction of 50% of all species.
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Description
Explore the fascinating world of avian dinosaurs, a remarkable group of reptiles that thrived for millions of years during the Mesozoic era. This quiz delves into their evolution, diversity, and the introduction of the term 'DINOSAURA' by Sir Richard Owen in 1842. Test your knowledge on these incredible creatures and their historical significance.
