This plate with the fossils of a frog and a fish is from the Shanwang Miocene layers
in China.
The frog's left arm and the left leg have been added, all the rst including the the
left foot is original. There are no manipulations at the fish.
The frog measures approximately 7.5cm, the fish measures approximately 8.5cm.
The slab was embedded with wax in a plastic container measuring approximately 21 x 15 cm.
You could get the stone out of the container easily by heating it up.