The Sacaco dentition refers to a roughly 5 million year old articulated shark dentition identified as C. carcharias from the upper Pisco Formation of Sacaco, Peru, on February of 1988 by fossil enthusiast Gordon Hubbell. Hubbell purchased the fossil from a farmer during his first trip to Peru, which coincidentally occurred only a few days after the discovery. The Pisco Formation, famous for its rich fossil beds dating from the Late Miocene to Pleistocene, is about 1 million to 9 million years ago. The region was once a sheltered, shallow marine environment ideal for preserving skeletons. The formation has produced articulated broad-toothed mako shark skeletons as well as fossils of whales, aquatic sloths and sea turtles. The total length of the specimen is estimated at 6 meters long. It is