All about Paleontology The Hindu Science Quiz
Unusual size: Life restoration of Kongonaphon kely shown to scale with human hands.
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According to current estimates, we believe that the dinosaurs first appeared on the earth some 243-233 million years ago. What was the name of this period?
- Jurassic
- Triassic
- Permian
- Devonian
Triassic – the period between 250 million years ago and 201.6 million years ago – was when the dinosaurs first appeared.
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What are ammonites?
- Compound of nitrogen and hydrogen
- A type of explosive
- Fossils of soft bodied animals
- A salt
Fossils of molluscs which first appeared in the Devonian period (419.2--358.9 mya). They are used as index fossils, that is, to estimate the age of a particular rock based on the genus or species of ammonite present in them
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What is biostratigraphy used for?
- Estimating relative ages of layers of rock
- Studying relative fitness of related species
- A test to study blood profiles
- Layering technique to prepare fossils
It is a way to estimate the relative ages of rocks by studying the fossil assemblages contained in them.
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What is the Devonian period named after?
- An animal that lived only in this period
- A place in England
- Because it was devoid of fossils
- None of the above
Devon in England was the place where the first fossil rocks from this period were identified.
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What is referred to as the Cambrian explosion which took place nearly 541 million years ago?
- A large meteorite crashed on the earth, destroying 99% of organisms
- The emergence of almost all major animal types on the fossil record
- An enormous volcanic eruption that destroyed emerging life
- A volcanic eruption that preserved 90% of the fossils we have today
It was an event that marked the emergence of almost all animal phyla on the fossil record. It lasted for a period of 13-25 million years.
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