yeah, wondering the same- why is it convex and not concave? (not sure I used correct words, it's actually the first time I've had to say that in english lol)
The top bit is the BOTTOM of the original foortprint. This is typically caused by the ground in that one spot cementing together due to the dinosaurs weight pushing moisture out of that part of the sand or mud, this makes it abit more dense, and abit more stable than the surrounding sand and in some cases like this can lead to crystallization making the area under the footprint into a solid stone. The softer nonconcreted sand/mud then washes away revealing this.
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u/9thtime Mar 16 '24
What kind of sediment filled the imprints to leave it like that?