Hyenas Once Lived in the Frigid Arctic

The video discusses the discovery of hyena fossils in the Arctic, providing evidence of their presence during the Ice Age. It highlights the rediscovery of hyena teeth in the Yukon, identifying them as belonging to the extinct genus Hazmaporthetes. The video also explores how crocodile fossils can offer insights into past climates, emphasizing the need for careful interpretation of their fossil record.

What significant discovery about hyenas was reported in the journal Open Quaternary?

• Hyenas were found in the Arctic during the Ice Age.

• Hyenas were the only carnivores in Africa.

• Hyenas never crossed the Bering Land Bridge.

• Hyenas were domesticated by early humans.

Where were the hyena teeth fossils discovered that led to new insights?

• In the Amazon Rainforest

• In the Sahara Desert

• In the Australian Outback

• In the Yukon Territory of Canada

To which extinct genus were the rediscovered hyena teeth attributed?

• Crocodilla

• Hazmaporthetes

• Mammuthus

• Canis

What might have contributed to the extinction of hyenas in North America?

• Human hunting

• Climate warming

• Competition with the short-faced bear

• Lack of prey

What role did the short-faced bear play in the ecosystem?

• It was domesticated by early humans.

• It was a scavenger that avoided hyenas.

• It competed with hyenas for food.

• It was a primary prey for hyenas.

What do crocodile and alligator fossils help scientists understand?

• The diet of ancient humans

• The evolution of mammals

• The migration patterns of birds

• Past climate changes

How did some crocodile species survive the transition between the Eocene and Oligocene epochs?

• By evolving into mammals

• By migrating to warmer areas

• By becoming herbivores

• By developing fur