Vieraella is an extinct genus of frogs from the Lower Jurassic (Early Pliensbachian to Toarcian) Roca Blanca Formation of Argentina, and one of the oldest...

and was well adapted for jumping. Another Early Jurassic frog is Vieraella herbsti, which is known only from dorsal and ventral impressions of a single...

impact of landing after a jump. Dating back to a similar date is Vieraella herbsti, a single specimen of which has been found in Santa Cruz Province...

approximately 180 million years ago. The earliest true frog fossil, Vieraella herbsti, is dated between 188 and 213 million years old. This predates the...