1. (Science: zoology) a shark of the genus Sphyrna or Zygaena, having the eyes set on projections from the sides of the head, which gives it a hammer shape. The Sphyrna zygaena is found in the North atlantic. Called also hammer fish, and balance fish.
2. (Science: zoology) a fresh water fish; the stone-roller.
Results from our forum
The Diplocaulus was an amphibian whose head was in the shape of a boomerang some what like a hammerhead shark.Does this mean it was an ancestor of the hammerhead shark no [Appearences are often deceptive].The diplocaulus probably became extinct.The reason why diplocaulus ...
See entire post