Unraveling the Origins of Synapsids and Therapsids

Which group of organisms had multiple bones in the lower jaw and a hinge between the articular and quadrate bones?

Early cynodonts

Synapsids (correct)

Therapsids

Later cynodonts

Which group of organisms had large dentary bones, long faces, and specialized teeth including large canines?

Synapsids

Therapsids (correct)

Early cynodonts

Later cynodonts

Which group of organisms had large temporal fenestra in front of the jaw hinge and teeth with several cusps?

Synapsids

Early cynodonts (correct)

Later cynodonts

Therapsids

Which group of organisms had teeth with complex cusp patterns and jaws hinged in two locations?

Later cynodonts Signup and view all the answers

Which group of organisms lost the original articular-quadrate jaw hinge?

Later cynodonts Signup and view all the answers

Which group of organisms had a single-pointed teeth and temporal fenestra?

Synapsids Signup and view all the answers

Which group of organisms had teeth with several cusps?

Early cynodonts Signup and view all the answers

Which group of organisms had jaws hinged in two locations?

Later cynodonts Signup and view all the answers

Which group of organisms had large dentary bones?

Therapsids Signup and view all the answers

Which group of organisms had long faces and specialized teeth, including large canines?

Therapsids Signup and view all the answers

Which theory explains that the continents are part of plates of Earth's crust that float on the underlying mantle?

Theory of Plate Tectonics Signup and view all the answers

What can interactions between plates cause?

Formation of mountains and islands Signup and view all the answers

What is the name of the supercontinent that formed about 250 million years ago?

Pangaea Signup and view all the answers

When did the formation of the Himalayan Mountains begin?

About 45 million years ago Signup and view all the answers

What are the two landmasses that separated from Pangaea during the Mesozoic Era?

Laurasia and Gondwana Signup and view all the answers

What can the separation, sliding past, or collision of oceanic and continental plates cause?

Earthquakes Signup and view all the answers

What are the two major types of plates on Earth's surface?

Oceanic plates and continental plates Signup and view all the answers

What do the rise and fall of a particular group depend on?

Speciation and extinction rates Signup and view all the answers

What can the rise and fall of groups of organisms reflect?

Differences in speciation and extinction rates Signup and view all the answers

What does the theory of plate tectonics explain?

The movement and interaction of Earth's lithospheric plates Signup and view all the answers

Unraveling the Origins of Synapsids and Therapsids

Questions and Answers

Which group of organisms had multiple bones in the lower jaw and a hinge between the articular and quadrate bones?

Which group of organisms had large dentary bones, long faces, and specialized teeth including large canines?

Which group of organisms had large temporal fenestra in front of the jaw hinge and teeth with several cusps?

Which group of organisms had teeth with complex cusp patterns and jaws hinged in two locations?

Which group of organisms lost the original articular-quadrate jaw hinge?

Which group of organisms had a single-pointed teeth and temporal fenestra?

Which group of organisms had teeth with several cusps?

Which group of organisms had jaws hinged in two locations?

Which group of organisms had large dentary bones?

Which group of organisms had long faces and specialized teeth, including large canines?

Which theory explains that the continents are part of plates of Earth's crust that float on the underlying mantle?

What can interactions between plates cause?

What is the name of the supercontinent that formed about 250 million years ago?

When did the formation of the Himalayan Mountains begin?

What are the two landmasses that separated from Pangaea during the Mesozoic Era?

What can the separation, sliding past, or collision of oceanic and continental plates cause?

What are the two major types of plates on Earth's surface?

What do the rise and fall of a particular group depend on?

What can the rise and fall of groups of organisms reflect?

What does the theory of plate tectonics explain?

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