New Fossil AP Discovered in India Fills Major Gaps in Premit Fossil Records

Gibbon Migration Map

Field site in Ramnagar, India. Credit: Christopher Gilbert

The 13 million year old Gibbon ancestor fills the huge gap in the primate fossil record.

A 13-million-year-old fossil found in northern India has come from a newly discovered organism, the oldest known ancestor of modern-day Gibbon. Christopher was. Research by Gilbert, Hunter College, adds a great deal to the AP fossil record and provides significant new evidence that today’s Gibbons’ ancestors migrated from Africa to Asia.

The findings are published in the article “Ni Ram Middle Musein Aap (Primites: Hilobatia) from Ramnagar, India, which fills a huge gap in the homomoid node biological record”. Proceedings of the Royal Society b.

Jivasim, a complete low molasses, belongs to the previously unknown genus and species (Copy Ramanagransis) and represents the first new organic species found at the famous site of Ramnagar, India, in almost a century.

Gibbon Migration Map

The map shows the position of the copy (black star) according to the approximate distribution of modern (dark green) and historical (light green) low self populations and the early fossils of East Africa (blue triangle). Green triangles mark the position of previously discovered organic gibbons. The new Javas are millions of years older than any of the older known organic gibbons and highlight their journey from Africa to Asia. Credit: Illustrated by Lucy Betty-Nash

The search for Gilbert was absurd. Gilbert and team members Chris Campisno, Biren Patel, Rajiv Patnaik and Premjit Singh were climbing a small hill in an area where a migratory jawbone was found a year ago. Pausing for a moment’s rest, Gilbert saw something shiny in a small pile of dirt on the ground, so he pulled it out and quickly realized he had found something special.

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“We found out immediately that it was a primate’s tooth, but it didn’t look like any other primate’s tooth in the area.” “From the shape and size of the molasses, our initial guess was that it may have been from a Gibbon ancestor, but this seemed to be very accurate, given that the biological record of the less intelligent does not really exist. . Other major species are known at that time, and no Gibbon organic has been found anywhere near Ramnagar. So we knew we had to do our homework to find out what that little organic thing was. ”

Following the discovery of the organism in 2015, years of study, analysis and comparison were made to confirm that the tooth belonged to a new species, as well as to determine its exact place in the family tree. Molar was photographed and CT-scanned to highlight important similarities and differences in dental physiology, and comparative samples of living and disappearing teeth were examined.

Ramnagar Research Team

Ramnagar Research Team, (from left) NP Singh, R. Patnaik, c. Gilbert, b. Patel and c. Campisno. Credit: Christopher Gilbert

Alexandre Ritz, part of the research team, said: “What we found was very compelling and undoubtedly pointed to the close relationship between Gibbs and a 13 million year old tooth. “Even though, at the moment, we only have one tooth, and so we need to be careful, this is a unique discovery. It traces Gibbon’s oldest known biological record back at least five million years, providing much-needed insights into the early stages of their evolutionary history. ”

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In addition to determining that the new AP depicts the ancient known organic gibbon, the age of the organic, about 13 million years old, coincides with the famous great self-organisms, providing evidence that the ancestors of orangutans Including, the migration of great intellectuals, and lesser attractions from Africa to Asia took place at the same time and in the same places.

“I found the biographical section very interesting,” said Chris Campisno. “Today, both Gibbon and Orangutan can be found in Sumatra and Borneo in Southeast Asia, and the oldest organisms are from Africa. Knowing that the ancestors of Gibbon and Aurangzeb lived together in the same place in northern India 1.3 million years ago, the history of migration to Asia may be similar. ”


Reference: “Ramnagar, Nio Middle Miocene Aap (Primitives: Hilobatidae) fills the huge gap in India’s hominid fossil record” September 8, 2020, Proceedings of the Royal Society b.

The research team plans to continue research at Ramnagar, which has recently received a grant from the National Science Foundation to continue their ongoing research on episodes.

Article contributors include Chris Gilbert Anthropology, Hunter College, and the Graduate Center (both New York City University); Alexandra Titi Ritz, New York University And the Institute of Human Origin, Arizona State University; Kelsey de Turban, Natural History of the American Museum; Christopher J. Capisno, Institute of Human Mind Origin and School of Human Mind Evolution and Social Change, Arizona State University; Biren A. Patel, Cake School of Medicine and Department of Biology, University of Southern California; Ningthozam Premjit Singh, Department of Geology, Panjab University; John. Flagley, Department of Anatomical Sciences, Stony Brook University; And Rajiv Patnaik, Department of Geology, Panjab University.

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The research in Ramnagar was funded by the Leakey Foundation, PSC-Kani Faculty Award Program, Hunter College, AAP Professional Development Program, University of Southern California, Institute of Human Origins (Arizona State University), and National Science Foundation. . . Further support is provided to Indian colleagues by the Earth Sciences and Science and Engineering Research Board of India.

About the author: Raven Weber

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