Sturgeon

* The common North American species are Acipenser sturio of the Atlantic coast region, A. transmontanus of the Pacific coast, and A. rubicundus of the Mississippi River and its tributaries. In Europe, the common species is Acipenser sturio, and other well-known species are the sterlet and the huso. The sturgeons are included in the order Chondrostei. Their body is partially covered by five rows of large, carinated, bony plates, of which one row runs along the back. The tail is heterocercal. The toothless and protrusile mouth is beneath the head, and has four barbels in front.

Shovel-nosed sturgeon. (Zoöl.) See Shovelnose (d).