coelacanth /sēˈlə-kanth/

Any of a group of primitive crossopterygian fishes all of which were thought to be extinct until 1938, when a living specimen of the genus Latimeria was discovered off the coast of E Africa

coelacanˈthic adjective (facetious)

Ancient but worth preserving

• on strike
• on sufferance
• on suspicion
• on suspicion of
• on tap
• on target
• on tenterhooks
• on terms
• on that score
• on the agenda
• on the air
• on the alert
• on the anvil
• on the back burner
• on the back foot
• on the back of
• on the back of an envelope
• on the ball
• on the barrelhead
• on the bash
• on the batter
• on the beam
• on the bench
• on the bias
• on the bit