Tupuxuara leonardii

Tupuxuara leonardii

The most dazzling feature on many pterosaurs was a spectacular head crest. Tupuxuara leonardii had one of the most impressive crests ever found. Its huge, fan-shaped crest swept back from its snout. Fossils of this large pterosaur formed in a lagoon in what is now Brazil. Tupuxuara lived near water and probably used its long, toothless beak to grab fish.

Stats

Stumper

Why did pterosaurs like Tupuxuara have crests? Scientists have concluded that pterosaurs used crests to:

tell each other apart

attract mates

they dont know for sure!

Correct!

Most scientists have many theories about why crests evolved. Besides identification and mating, they may have had other functions, like cooling their bodies and steering in flight.

Stumper

Tupuxuara was just one of several crested pterosaur species that lived at the same time and place in Brazil. Their crests were:

identical

similar

different

Correct!

The crests of these species were different sizes, shapes, and even colors. This may be evidence that distinctive crests helped pterosaurs tell each other apart.

Fact or Fiction

The large hole in the Tupuxuara skull was an eye socket.

Fact

Fiction

The eye sockets were very small and sat right behind the large opening in the skull. These open spaces helped keep the skull lighter for its size.

Fact or Fiction

Antibiotics are effective treatments for viruses like the flu.

Fact

Fiction

Antibiotics kill bacteria, so they don't fight infections caused by viruses like the flu and the common cold. In fact, overusing antibiotics can cause bacteria to become resistant.

Fact or Fiction

The exact same virus can infect a bird, a pig, and a human.

Fact

Fiction

People can't be infected by a bird virus. But pigs can be infected with both bird and human viruses. So if a bird flu virus spreads to pigs, it can mutate into a kind that can then spread to humans.

Quote

“

It's hard for us to know what the elaborate crest were used for. We just don't have enough fossils yet. It would take thousands of fossils of these animals in different growth stages to be able to understand that question.

„

Mark Norell, paleontologist

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Correct!

Fact

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Fiction

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