Ice Age Fossils Found in Underwater Cave in Texas Shed New Light on Prehistoric Life

Fossils of Megalonyx jeffersonii and Holmesina septentrionalis. Credit: John A. Moretti et al. / CC BY 4.0

Two researchers from the University of Texas astatine Austin person uncovered fossil remains of Ice Age animals wrong a submerged cave successful Central Texas. The find is offering uncommon penetration into the region’s prehistoric life.

John Moretti and John Young discovered portion snorkeling done an underwater transition successful Comal County. The site, known arsenic Bender’s Cave, had not been mapped earlier and lies connected backstage land.

Inside the cave, the researchers recovered a ample fig of fossilized bones dispersed crossed the floor. The remains had stayed undisturbed for thousands of years, creating a well-preserved grounds of past carnal life.

Fossils uncover Ice Age species

The fossils see remains of saber-tooth cats, elephantine sloths, and ample armadillo ancestors. Some of these armored mammals were arsenic ample arsenic modern lions. Researchers accidental these animals lived successful Central Texas during the past interglacial period, a warmer signifier of the Ice Age astir 100,000 years ago.

Scientists judge the bones entered the cave done earthy openings specified arsenic sinkholes. Over time, erosion and flooding apt carried the remains underground. Once inside, the cave’s unchangeable conditions helped sphere them.

Moretti said the fig of fossils recovered successful the cave was unusual. He described the tract arsenic covered with bones, dissimilar thing helium had seen successful akin environments.

A caller presumption of Central Texas’ past

Researchers accidental the find is important due to the fact that fossils from this clip play person not been identified successful Central Texas before. The tract could supply caller grounds astir the region’s past landscape, climate, and carnal communities.

Ice Age #fossils discovered successful an underwater cave successful #Texas are giving scientists a uncommon look astatine prehistoric life. Researchers recovered remains of saber-tooth cats, elephantine sloths, and more, which person been preserved for thousands of years. pic.twitter.com/afzS4k8YrQ

— Tom Marvolo Riddle (@tom_riddle2025) April 6, 2026

The findings suggest that Central Texas whitethorn person supported a wider scope of ample animals than antecedently understood. This points to biology conditions that were antithetic from those seen today.

Wider implications crossed Texas

The discovery is besides drafting attraction to Texas’ ample fig of caves. Many of these sites stay unexplored and could incorporate akin fossil deposits. Scientists accidental these caves whitethorn clasp invaluable clues astir the state’s geological and clime history.

David Ledesma, who was not progressive successful the study, said the findings see taxon not expected successful this portion of Texas. He noted that discoveries proceed to alteration technological knowing of the region.

Additional fossils recovered successful the Dallas country and on the Gulf Coast enactment this idea. These see remains of elephantine tortoises, crushed sloths, and pampatheres, an extinct comparative of modern armadillos.

Researchers accidental the findings rise caller questions astir what Central Texas looked similar thousands of years ago. They besides suggest that much discoveries whitethorn inactive prevarication hidden underground.