Weird tracks in Texas indicate giant Sauropods walking on their front feet only

They were the largest animals to ever walk the Earth: sauropods, a dinosaur clade of such immense size and stature, they're sometimes dubbed "thunder lizards."

These towering hulks—including Brontosaurus, Brachiosaurus, and Diplodocus among others—needed four thick, powerful legs to support and transport their massive bodies. At least, most of the time. Perhaps.

Some mysterious, ancient tracks described in a 2019 study could offer fresh support for a disputed view in paleontology: that these lumbering giants sometimes got around on two legs, not four, belying what their quadruped status (and simple physics) would seem to demand

Three different trails of parallel, manus-only sauropod trackways were investigated in the county of Bandera, Texas, by teams from Purdue University Fort Wayne and the Houston Museum of Natural Sciences. Several dozen individual footprints were preserved for study before the surface layers were removed for commercial purposes.

While we don't know for sure what kind of sauropods left these manus-only marks, the researchers highlighted the possibility that it could be a different kind of dinosaur to those responsible for other manus-only footprints previously seen in the Glen Rose Formation. Read more at sciencealert.com