The cownose ray (Rhinoptera bonasus) is a species of Batoidea found throughout a large part of the western Atlantic and Caribbean, from New England, United States to southern Brazil (the East Atlantic populations are now generally considered a separate species, the Lusitanian cownose ray (R. marginata)). Male rays often reach about 2 and 1/2 feet in width. Females typically reach about 3 feet in width. However, there have been reports of rays up to 7 feet in width. Sizes change depending on the geographical range. Females will usually grow larger than males, allowing for larger offspring. These rays also belong to the order Myliobatiformes, a group that is shared by bat rays, manta rays, and eagle rays.