Habitat: Extremely adapted species found in virtually all lowland and riverine habitat types throughout its range- particularly as a result of the now-diminished ranges of sympatric competitors--although it generally prefers areas of still water. Can tolerate a reasonable degree of salinity. Distribution: Rio San San and Canales de las Bananeras, Changuinola. Characteristics: A relatively small to medium sized crocodilian.(males generally reach 2.0m to 2.5m). Famales are smaller, reaching a mean maximum size of 1.4m. Its common name derives from a bony ridge which is present between the front of the eyes (infra-orbital bridge), appearing to join the eyes like a pair of spectacles. A triangular ridge is present on the heavily-ossified upper eyelids, vaguely reminiscent of those on the dinosaur Allosaurus. Juveniles are yellow in colour with black spots and bands on the body and tail. Adults are dull olive-green.