Fossil of ancient shark discovered in Peru

Peruvian paleontologists have unveiled a remarkable 9-million-year-old fossil of Cosmopolitodus Hastalis, an ancient relative of the great white shark, discovered in the Pisco basin region, located 235 kilometers south of Lima. This nearly complete specimen represents a significant find in shark paleontology, as complete shark fossils are exceptionally rare worldwide.
The prehistoric predator, believed to be an ancestor of today's great white shark, was a formidable creature measuring up to seven meters in length—comparable to a small boat. Its impressive dentition featured teeth reaching up to 8.9 centimeters in length. The fossil exhibits "exceptional fossilization," according to Cesar Augusto Chacaltana, an engineer from the Peruvian geological and mining institute (INGEMMET).
During the presentation, researchers displayed the ancient shark's remains in several glass urns, with one containing its massive, sharp-toothed jaw. Particularly noteworthy was the discovery of numerous sardine remains preserved within the specimen's stomach contents. Paleontologist Mario Urbina explained that sardines were a crucial food source for marine predators during this period, as anchovies had not yet evolved.
This discovery adds to Peru's rich paleontological heritage, following other significant finds in the same region. The Pisco basin, a hot desert area, has proven to be a treasure trove of ancient marine species. Recent discoveries in the area include a young crocodile fossil from over 10 million years ago and the skull of the largest known river dolphin, dated to approximately 16 million years ago, unveiled in April of the previous year.
The exceptional preservation and completeness of this Cosmopolitodus Hastalis specimen provide valuable insights into the marine ecosystems of the southern Pacific Ocean during the late Miocene period.