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Ice Age Megafauna Found in Texas Water Cave Point to Warmer Past

Evidence points to a last-interglacial ecosystem with dating unresolved.

Overview

  • A new peer-reviewed study in Quaternary Research details fossils recovered by snorkeling an active stream in Bender’s Cave in Comal County.
  • Finds include a giant tortoise, a pampathere (a large armadillo relative), a giant ground sloth, mastodons, camels, and saber-tooth cats not previously documented in Central Texas.
  • Researchers John Moretti and John Young made six trips between March 2023 and November 2024, surveying 21 zones and collecting polished, rust-colored bones by hand.
  • The team reports that the bones likely washed in together through sinkholes during floods, yet scarce datable material prevents precise age tests.
  • Statistical comparisons align the cave’s fauna with known last-interglacial sites near Dallas and the Gulf Coast, signaling a potential first warm-interval record for Central Texas that outside experts call surprising.