These eggs were left high and dry when the lake level changed so I moved them back into the water. The lake is full of rough skinned newts and the eggs look a bit like them. The limbs have not started to differentiate from the bodies on the embryos.
In spite of being out of water the eggs looked healthy. I did not see the embryos moving at all.
If you think this observation is inaccurate, please add an ID, participate in the quality assessment above, or describe the inaccuracy in a comment.