Ancient relatives of modern frogs were the size of a fingernail and lived next to the dinosaurs 216 million years ago.
Bone-sized bone fragments embedded in rock have been found, and experts believe that they date back to the late Triassic
The iliac section of the hip bone belongs to a group of amphibians known as Chinle frogs are known – a long extinct branch of modern frogs.
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A frog related to today's amphibians was found in a rock, and paleontologists say It is said that it is 216 million years old. It is believed that they were so small that they fit the end of a human finger (the artist's impression is shown)
Viginia Tech paleontologists identified the fossil fragments and claim that they are the oldest known frogs in North America.
According to the researchers, the fragments are packed in rock and are smaller than a fingernail.
The researchers found that the fragments represent the first known and earliest equatorial remains of a Salientian – the group that contains live frogs.
It is also believed that they are the closest related animals in the fossil record of modern frogs.
The name of the fossil is derived from the site, the Chinle Formation of Arizona.
Dr. Michelle Stocke says the fossils discovered last May underscore the importance of collecting microfossils. [Stock65] Assistant Professor of Geosciences at Virginia Tech said, "This new find highlights how much more there is to learn about the Late Triassic ecosystem and how much we find if we look a little more closely.
"We know the charismatic archosaurs from the Chinle Formation, but we know that based on other ecosystems, they should make up a small percentage of the living animals.
"With this new focus, we can fill many of them, lacks smaller components in new discoveries.
It is believed that the hip bones are of several individuals and are long and hollow.
Dr. Stocker added, "The chinle frog could fit at the end of your finger."
Although the fossils belong to the Chinle frogs' family, they said that they do not yet name the specific fossils.
"We are foregoing the naming of this Chinle frog as we continue to process the microvertebrate matrix, which is likely to yield additional cranial and postcranial material that has the potential to be even more informative," Dr. Stocker added.
The research team said that the Chinle frog also bears similarities to Prosalirus and Triadobatrachus from the early Jurassic and early Triassic periods.
Stocker said, "These are the oldest frogs near the equator.
" The oldest frogs are approximately 250 million years old from Madagascar and Poland, but these specimens are from higher latitudes and not from equatorialia. "19659024" The section of the hipbone known as the ilium belongs to a group of amphibians known as Chinle frogs – a long-extinct branch of modern frogs (pictured) .The fossil belongs to a long-extinct branch of frogs ( stock ” class=”blkBorder img-share” />