Amniotes Flashcards by Mariana Cerca

Q

What is the anamniote egg?

A

It’s the amphibian egg

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Q

Which egg is vulnerable to dehydration?

A

The anamniote egg

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Q

What is the amnion?

A

A sac that encloses the embryo in liquid

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Q

What parts of the egg help with gas exchange?

A

The chorion and the allantois

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Q

Anapsid condition - number of fenestrae

A

No fenestrae

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Q

Synapsid condition - number of fenestrae

A

1 lower fenestrae

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Q

Diapsid condition - number of fenestrae

A

2 fenestrae - 1 lower and 1 upper

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Q

Euryapsid condition - no of fenestrae

A

1 upper fenestrae

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Q

What condition is extinct?

A

Euryapsid

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Q

Anapsid example

A

Turtles

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Q

Synapsid example

A

Mammals

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Q

Diapsid example

A

Birds, Reptiles, etc

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Q

Sauropsida includes…

A

Reptiles and birds

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Q

Lepidosauria includes…

A

Tuatara, lizards, snakes

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Q

Archosauria includes…

A

Crocodilians and Birds

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Q

3 groups of dinaussaurs

A

Ornithischia, Sauropodomorpha, Theropoda

Q

What are the 3 theories for the evolution of flight in birds?

A

Ground up, Trees down, WAIR

Q

What group do turtles seem to belong to?

A

Archosauria

Q

Were Euryapsids marine or land animals?

A

Marine