Gryposuchus existed as a genus in the ancient Amazonian and Caribbean regions for millions of years. Numerous species have been found, and they vary quite remarkably in size. They are known from snouts and skull remains, with one species, the massive Gryposuchus croizati stretching 10 meters (33 ft) in length. While some were among the true giants of the crocodilian world, others were quite ordinary in size.
For all their superficial differences though, these ancient and modern gharials all have very long snouts and “telescoped” eye openings for their river-dwelling lifestyle. This helped them to see and catch fish in their habitat, and these eye openings crop up time and again in these gharials.
Yet for a long time, we didn’t know if it was an example of convergent evolution or whether it was a common evolutionary feature. A new species of Gryposuchus, Gryposuchus pachakumae has been found in Peru and it is the oldest known gavialoid crocodylian from the Amazon.