Fossilized dinosaur footprints discovered in ancient streambed with bubbles.
A top-down view of a light gray streambed with two fossilized footsteps of an Acrocanthosaurus in the center. The bottom left footprint is facing the top right corner, while the top right footprint faces to the right. The surfaces of the water have white specks of bubbles. The right side of the frame has a strip of green smudges on the streambed. The lighting is making the footprint appear a darker gray.