These to me look more fish-like (either ribs or spikes). If ribs, they curve downwards which would mean this fish is taller than wide and was probably not a bottom feeder or dweller. Maybe @vperez or @jeanette-pirlo might know.
I agree that they are frog bones, but I’m not certain they are diagnostic to the species level. The associated bones found in the same 1ft square might be from the maxilla or premaxilla. I’ll see if someone over in herpetology can tell us more.