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Ancient Crocodile Species Discovered in Patagonia's Fossil Record

8/28/2025

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Summary

Story summary

A new species of ancient crocodile, Kostensuchus atrox, has been discovered in Patagonia, Argentina, dating back 70 million years.
This hypercarnivore measured about 11.5 feet and weighed approximately 550 pounds, preying on medium-sized dinosaurs.
The well-preserved fossil shows robust jaws and serrated teeth, confirming its status as a top predator.
Findings were published in PLOS One on August 27, 2025.

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Story summary

A new species of ancient crocodile, Kostensuchus atrox, has been discovered in Patagonia, Argentina, dating back 70 million years.
This hypercarnivore measured about 11.5 feet and weighed approximately 550 pounds, preying on medium-sized dinosaurs.
The well-preserved fossil shows robust jaws and serrated teeth, confirming its status as a top predator.
Findings were published in PLOS One on August 27, 2025.