PBS EONS Dimetrodon and the Permian Period

What era is Dimetrodon most associated with?

• Proterozoic Era

• Palaeozoic Era

• Cenozoic Era

• Mesozoic Era

What does the name 'Dimetrodon' mean?

• Sail-backed predator

• Ancient reptile

• Two-measure tooth

• Lizard-like mammal

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What type of teeth did Dimetrodon have for killing prey?

• Incisors

• Serrated teeth

• Molars

• Canine-like teeth

What posture did Dimetrodon likely use to move more efficiently?

• Sprawling posture

• Bipedal stance

• High walk

• Quadrupedal stance

What was one proposed function of Dimetrodon's sail?

• Camouflage

• Swimming

• Flight

• Temperature regulation

What recent theory suggests the sail of Dimetrodon was used for?

• Solar panel

• Communication

• Defense

• Hunting

What modern mammal feature is similar to Dimetrodon's sail in terms of communication?

• Dog's tail

• Elephant's trunk

• Lion's mane

• Cat's whiskers

In which environments did Dimetrodon thrive?

• Oceans and rivers

• Mountains and forests

• Swamps and deserts

• Plains and valleys

What event marked the end of Dimetrodon's reign?

• The Cambrian Explosion

• The Meteor Impact

• The Ice Age

• The Great Dying

What is the significance of Dimetrodon in the mammalian lineage?

• Direct ancestor of modern mammals

• Example of early mammalian adaptations

• First mammal to fly

• First mammal to live in water