The La Plata skate (Atlantoraja platana) is a species of fish in the family Arhynchobatidae.

It lives off the coast of Brazil, Uruguay and Argentina in depths ranging from 19 to 181 meters.

Males reach maturity when 86% of total length which means about 47 to 53 centimeters.

It is oviparous, lays oblong egg capsules with horned corners.

It is relative rare with population trend decreasing, major threat being fishing, although it is mainly a bycatch.