Rare articulated fossil frog Genibatrachus from the age of dinosaurs. This fossils are positive and negative matrix. Frogs are not easy to fossilize because of their weak bones. So frog fossils are rare. Here is a top preserved fossil frog from Liaoning province. It measures 13 cm and every single bone is perfectly there, even the remains of the tiny dentition is visible. The speciment is guaranted to be original, without any restauration or manipulation. The back side of the slab has been reinforced with glue and pieces of rock, that because otherwise that thin slab would be very fragile.