Potamotrygonidae
Potamotrygonidae (river stingray; subclass Elasmobranchii, order Rajiformes) A small family of freshwater stingrays in which the body has an almost circular profile ending in a fairly solid tail bearing a poisonous spine much feared by fishermen. These rays can be found partially buried in the mud of rivers. There are about 10 species, in S. America, W. Africa, and south-east Asia.
More From encyclopedia.com
Orange River , Orange River
Orange River, chief river of S Africa, c.1,300 mi (2,090 km) long, rising in the Maluti Mts., N Lesotho. It flows SW through Lesotho, th… River Profile , river profile The slope of the long profile of a river, expressed as a graph of distance-from-source against height. It is generally concave-up, and… Streamflow , RIVERS
RIVERS . Among the Native American Yurok people, who live along the Yurok River in northern California, orientation in the world was not provi… River , River
A river is a natural stream of freshwater that is larger than a brook or creek. Rivers are normally the main channels or largest tributaries of… Otter , Otters
Otters are small to medium-sized mammals with a long body, flattened head, broad muzzle, and long stiff whiskers. Their tail is strong, long,… Stingray ★½ 1978 (PG) , sting·ray / ˈstingˌrā/ • n. a bottom-dwelling marine ray with a flattened diamond-shaped body and a long poisonous serrated spine at the base of the…
You Might Also Like
NEARBY TERMS
Potamotrygonidae