What are the idioms that describe "dinosaurs"?

Monster, dominating the earth, ancient times, extinction, disappearance

A monster? [páng rán dà wù]: Something that looks big.

Tang Zongyuan's Chu Chu: Qian Donkey: "When a tiger sees it, it is strange, thinking it is a god, hiding in the forest."

Synonym: huge, inappropriately big.

Antonym: tiny, trivial, small and exquisite, insignificant and petite.

Extinction? 【mièjué】: 1。 It means to destroy completely, usually by killing. 2. destruction; Destruction 3. Destroy; eliminate

Synonyms: withering, extinction, extinction, stunt, extinction

Disappear? [Xiāo shι]: [Things] gradually decrease so that they do not exist or [people or things] gradually disappear from near to far; no longer exist

Synonyms: extinction, dissipation, decline, extinction, extinction

Make sentences:

1. Dinosaurs were animals that lived in the Mesozoic era.

2. Mesozoic dinosaur is a mysterious animal.

2 million years ago, dinosaurs died out on the earth.

Experts have different views on the extinction of dinosaurs.

Many ancient creatures, such as dinosaurs and mammoths, have disappeared from the earth.

6. The secret of dinosaur fossils can only be understood, but not expressed.

7. Dinosaurs were animals in ancient times.

8. Dinosaurs are giants to ants.

9. Dinosaurs died out in the Quaternary.