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Quiz about Sea Monsters The swimming TRexes

Sea Monsters: The swimming T-Rexes Quiz

This quiz is about the prehistoric marine life that ruled the seas. Good luck and test your knowledge on these sea monsters!

A multiple-choice quiz by dinotrek27. Estimated time: 4 mins.

Author
dinotrek27

Time
4 mins

Type
Multiple Choice

Quiz #
353,709

Updated
Dec 03 21

# Qns
10

Difficulty
Tough

Avg Score
6 / 10

Plays
275

One at a Time - Single Page - Timed Game

Question 1 of 10

1. Which of these creatures ate only shellfish? Hint

Ceresiosaurus

Plesiosaurus

Dactylosaurus

Henodus

NEXT>

Question 2 of 10

2. Which of these sea monsters is not a reptile? Hint

Basilosaurus

Grippia

Thalassiodracon

Opthamolosaurus

NEXT>

Question 3 of 10

3. What did the name "Ambulocetus", an early whale, mean? Hint

Roofed Mammal

Emperor Whale

Walking Whale

Ambrosia Whale

NEXT>

Question 4 of 10

4. Which of these species of mosasaur have fossils that are found in New Zealand? Hint

Pluridens

Taniwhalosaurus

Clidastes

Hainosaurus

NEXT>

Question 5 of 10

5. What was Pterygotus? Hint

An early whale

A trilobite

A sea scorpion

A mosasaur

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Question 6 of 10

6. What was so special about the elasmosaur Aristonectes? Hint

It had a bigger head in proportion to other elasmosaurs

It had huge canines

It had teeth designed for filter feeding

It was the largest elasmosaur ever

NEXT>

Question 7 of 10

7. Which was the biggest ichtyosaur among these options? Hint

Ictyosaurus

Shonoisaurus

Aegirosaurus

Cymbospondylus

NEXT>

Question 8 of 10

8. Megalodon was a giant shark that lived after the dinosaurs, easily hitting 15m-20m in length. However, new finds suggest a possible competitor to Megalodon's reign. What was it? Hint

A sperm whale

A crocodile

Another giant shark

A giant squid

NEXT>

Question 9 of 10

9. What was Metriorhynchus? Hint

A mosasaur

A shark

A plesiosaur

A marine crocodile

NEXT>

Question 10 of 10

10. What did the name "Liopleurodon", a species of pliosaur, mean? Hint

lion tooth

tough snout

shark hunter

smooth-sided tooth

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Quiz Answer Key and Fun Facts

1. Which of these creatures ate only shellfish?

Answer: Henodus

Henodus was a placodont, a group of marine reptiles of the Triassic Period that specialize in eating shellfish.

The rest are nothosaurs and plesiosaurs that were mainly fish hunters.

2. Which of these sea monsters is not a reptile?

Answer: Basilosaurus

Basilosaurus was a prehistoric predatory whale that lived during the Eocene period. At 20-25m long and with a serpentine body, early paleontologists mistook it for a sea reptiles like mosasaurs, thus naming the creature wrongly.

Thalassiodracon is a plesiosaur.
Grippia is an early triassic ichtyosaur.
Opthamolosaurus is a late jurassic ichtyosaur.

3. What did the name "Ambulocetus", an early whale, mean?

Answer: Walking Whale

Ambulocetus was one of the earliest whales. It lived in freshwater and sported powerful webbed back feet for propulsion. Its behavior was like that of a crocodile, waiting in the shallows for unwary prey.

4. Which of these species of mosasaur have fossils that are found in New Zealand?

Answer: Taniwhalosaurus

Taniwhalosaurus was a 6m long mosasaur found with remains found only in New Zealand.

5. What was Pterygotus?

Answer: A sea scorpion

Pterygotus was the largest of the eurypterid family, also known as the sea scorpions. This species could reach a possible length of 3m long with huge pincers. However, these arthropods were not the ancestors of scorpions.

6. What was so special about the elasmosaur Aristonectes?

Answer: It had teeth designed for filter feeding

Aristonectes had teeth that act like sieves, similar to that of a baleen whale. Scientists believe it used its teeth to filter tiny crustaceans and plankton from the water.

7. Which was the biggest ichtyosaur among these options?

Answer: Shonoisaurus

Shonoisaurus could have reached lengths of over 21m, easily rivalling the biggest Pliosaurs and Mosasaurs.

8. Megalodon was a giant shark that lived after the dinosaurs, easily hitting 15m-20m in length. However, new finds suggest a possible competitor to Megalodon's reign. What was it?

Answer: A sperm whale

Livyatan, a recently discovered genus of sperm whale, not just shared Megalodon's range and time-span, it grew to equally terrifying proportions. At 17m long with teeth longer than a T-Rex's, it was a formidable rival. However, Livyatan seemed to be more rare than Megalodon in terms of fossils, with only a handful of bones found so far.

9. What was Metriorhynchus?

Answer: A marine crocodile

Metriorhynchus was the most successful of a specialist group of crocodiles that had given up armour for speed and agility in a water. With a fish-like tail and slender form, Metriorhynchus was perfectly adapted to a marine fish-hunting lifestyle.

10. What did the name "Liopleurodon", a species of pliosaur, mean?

Answer: smooth-sided tooth

Liopleurodon, while advertised in the "Walking With Dinosaurs" tour as a 25m long monster, only grew to a maximum size of 10m.

Source: Author dinotrek27

This quiz was reviewed by FunTrivia editor WesleyCrusher before going online.
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