icthyosaurus

Definition

Ichthyosaurs were marine reptiles that lived during the Mesozoic era, which is also known as the Age of Dinosaurs. They were very similar to dolphins and whales, and they were the dominant marine predators of their time.

Ichthyosaurs had streamlined bodies with flippers instead of legs. They also had large eyes that helped them to see in the dark. Their nostrils were located on top of their heads, which allowed them to breathe while swimming upside down.

Ichthyosaurs were very successful animals. They lived all over the world, and they thrived for millions of years. However, they went extinct along with the dinosaurs at the end of the Cretaceous period.

How can the word be used?

Ichthyosaurians were marine reptiles that were well-adapted to swimming.

Different forms of the word

Noun: Ichthyosaurus is a type of extinct marine reptile that lived during the Mesozoic era. It is characterised by its long, streamlined body, flippers, and dorsal fin.

Adjective: Ichthyosaurian means "relating to or resembling an ichthyosaurus". For example, an ichthyosaurian skeleton is one that belonged to an ichthyosaurus.

Etymology

The word "ichthyosaurus" comes from the Greek words "ichthys" (fish) and "sauros" (lizard). It was first used in English in the early 19th century to refer to a type of extinct marine reptile that had a fish-like body.

Question

Describe an icthyosaurus.