Spinosaurus: The First Aquatic Dinosaur

What was the common misconception about plesiosaurs and ichthyosaurs?

• They were thought to be dinosaurs.

• They were considered to be birds.

• They were considered to be mammals.

• They were believed to be amphibians.

Where was the Spinosaurus skeleton discovered?

• In the Australian Outback

• In the Moroccan Sahara

• In the Amazon rainforest

• In the Siberian tundra

What was the most striking feature of the Spinosaurus that suggested it could swim?

• Its long neck

• Its paddle-like tail

• Its sharp claws

• Its large eyes

How did the Spinosaurus' tail compare to other predatory dinosaurs?

• It was weaker than most.

• It was similar to a bird's tail.

• It was almost three times better at pushing through water.

• It was less effective in water.

What adaptation did the Spinosaurus' jaw have for catching fish?

• It could widen to catch large fish.

• It had a beak-like structure.

• It had serrated edges.

• It was flat and broad.

What type of teeth did the Spinosaurus have?

• Flat and serrated

• Sharp and curved

• Flat and broad

• Conical and suited for spearing

What does the abundance of Spinosaurus teeth in riverbeds suggest?

• They spent most of their time in water.

• They were scavengers.

• They were nocturnal.

• They lived in forests.

What does the brain case of Spinosaurus reveal about its lifestyle?

• It had a small brain.

• It was adapted for flying.

• It had a large olfactory bulb.

• It was adapted for life in water.

What sensory adaptation did Spinosaurus have for detecting prey underwater?

• Electroreceptors in its fins

• Pressure receptors in its snout

• Heat sensors in its tail

• Vibration sensors in its feet

What is the significance of the Spinosaurus' sensory adaptations?

• They allowed it to fly.

• They helped it detect land prey.

• They made it a better climber.

• They enabled it to hunt in murky waters.