生いきている化か石せき

expression, noun

living fossil

Refers to a species that has remained unchanged for millions of years and resembles fossils of ancient organisms. Used both in biology and figuratively for something outdated.

• シーラカンスは生いきている化か石せきと呼よばれている。

  The coelacanth is called a living fossil.

• 彼かれの考かんがえ方かたは生いきている化か石せきだ。

  His way of thinking is a living fossil.