Thunder beast or swamp rhino? Fossils found at SoCal construction site
- Posted on September 24, 2026
- By Los Angeles Times
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- 1 min read
In brief
Paleontologists have uncovered remarkable fossilized remains of a large ungulate during construction work in Southern California. Dating back over 40 million years to the Eocene epoch, these ancient bones provide crucial insights into prehistoric megafauna that once roamed North American ecosystems. The discovery, which may represent either a proto-rhinoceros or similar large hoofed mammal, offers researchers valuable evidence about evolutionary adaptations and environmental conditions during that distant geological period.
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Thunder beast or swamp rhino? Fossils found at SoCal construction site
The fossilized remains, which belonged to a large, hoofed animal are believed to be more than 40 million years old.
