Ancient Croc Found

Researchers discover a new fossil of an ancient 20-foot-long crocodile in the same coal mine where the world’s largest snake was found.

Written byJef Akst
| 1 min read

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This illustration shows how Acherontisuchus guajiraensis, a 60-million-year-old ancestor of crocodiles, would have looked in its natural setting. Titanoboa, the world's largest snake, is pictured in the background.FLORIDA MUSEUM OF NATURAL HISTORY, ILLUSTRATION BY DANIELLE BYERLEY

A coal mine in Colombia is turning out to be a home for ancient giants. In addition to the 40-foot-long snake known as the Titanoboa, the once rivers of South America were also roamed by a 20-foot crocodile species, researchers reported in Palaeontology yesterday (September 15).

The newly discovered crocodile fossil (Acherontisuchus guajiraensis) holds many similarities to its modern relatives—a long, narrow jaw with loads of sharp teeth, leading the researchers to suggest it was a great hunter—primarily devouring lungfish and bonefish relatives, they suspect. If true, that would make the croc the first tropical New World land animal specialized to eat fish, Wired reported.

The crocodiles, especially juveniles, were also likely the prey of the giant boa. “The younger individuals were definitely not safe ...

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  • Jef (an unusual nickname for Jennifer) got her master’s degree from Indiana University in April 2009 studying the mating behavior of seahorses. After four years of diving off the Gulf Coast of Tampa and performing behavioral experiments at the Tennessee Aquarium in Chattanooga, she left research to pursue a career in science writing. As The Scientist's managing editor, Jef edited features and oversaw the production of the TS Digest and quarterly print magazine. In 2022, her feature on uterus transplantation earned first place in the trade category of the Awards for Excellence in Health Care Journalism. She is a member of the National Association of Science Writers.

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