and these are T. rex footprints.
Paleontologists have discovered thousands of dinosaur footprint fossils.
They've been found on every continent.
- Dinosaur footprints.
- Sometimes we just find one footprint, and sometimes we find a long series of footprints called "track ways."
Fossil track ways tell us how dinosaurs moved.
Tracks tell us that disaurs stood upright.
with their feet close together, and since we don't find many signs of dragging tails, we know that dinosaurs held their tails in the air.
- That's cool.
- Paleontologists have also found track ways of sprawling crocodiles... [crocodile snarling] and slithering snakes... [snake hissing] and hopping frogs.
[frog croaking] Of course, animals living today make tracks too.
You're probably seen some right around your own home.
Hey, I've got an idea.
Get outside, get into nature, and make your own footprint discoveries.
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