Paleontologists have found a small frog bone that lived two million years ago and could be of undiscovered species.
Argentine researchers were alerted to the discovery after a family found it while digging in a well.
Experts believe that the prehistoric frog bone may belong to a new species.
The small bone was discovered when the Bastia family was digging a well in the Agro Taurizano area on the outskirts of the municipality of San Pedro in the northeastern Argentine province of Buenos Aires.
Federico Agnolin, a researcher at the Argentine Museum of Natural Sciences, said that father Robero Bastia and his son Guillermo were digging in the area at a depth of 44 meters (144 feet) when ‘they raised their hands to see what kind sediment arrived from the well. ‘
He added, “Guillermo saw a small bone only a few millimeters long that caught his attention and a few days later brought it to the Museum San Pedro for analysis.”
Agnolin said experts have now identified the bone as belonging to a frog that lived about two million years ago.
However, due to its age and lack of knowledge of frogs of the time, the species cannot be identified and he said it could be a newly discovered species.
He said, “We don’t know much about prehistoric frogs and toads. Frogs and toads are very sensitive to climate and environmental changes, so they are an important source of information for understanding the past climate.
“It is a very small humerus from a small amphibian, unlike the Argentine horned frog and tree frogs.”
The discovery occurred in March, but has only just been reported.
He said that experts can rest assured that frogs and toads belong to a certain structure at the end of the humerus in the articulation that forms the elbow.
With this feature they can have a lot of agility, move fast and jump.
He said of the bone that may belong to a new species: “Knowing the existence of a new amphibious species from the end of the Pliocene and the beginning of the Pleistocene is an important thing for the Argentinian paleontology. “
It is believed that the sediments where the bone was found were deposited in the Pliocene between 2 and 2.5 million years ago.