Tag Archive for 'Oligocene'

Artistic reconstruction of a pod of Arktocara yakataga, swimming offshore of Alaska during the Oligocene, about 25 million years ago, with early mountains of Southeast Alaska in the background. Image credit: Alexandra Boersma.

Arktocara yakataga: Forgotten Fossil Found to be New Species of Ancient Dolphin

Aug 16, 2016 by News Staff

A fossil stored in the Smithsonian Institution’s National Museum of Natural History for several decades has been identified as a new species of ancient...

Echovenator sandersi: Oligocene Whale Had Ultrasonic Hearing

Aug 8, 2016 by Enrico de Lazaro

27-million-year-old fossil of newly-discovered toothed whale species provides clues about evolution of high-frequency hearing. Echovenator sandersi produces...

A 25 million-year-old fossilized termite nest with the remains of a ‘fungus garden’ preserved inside. Image credit: H. Hilbert-Worf / James Cook University.

Paleontologists Discover Earliest Evidence of Insect Agriculture

Jun 24, 2016 by Natali Anderson

An international team of paleontologists has discovered the oldest known examples of ‘fungus gardens’ within 25 million-year-old fossilized termite...

The EOT transition functioned as a critical filtering episode during the evolutionary history of primates. Image credit: Xijun Ni

Ten Fossil Species from China Reveal Divergence between Afro-Arabian and Asian Primate Evolution

May 6, 2016 by News Staff

In a study published online in the journal Science, paleontologists from China and the United States report the discovery of a diverse primate fauna from...

Retrovirus particles budding from rhesus macaque placenta cells. Image credit: Dorothy Feldman, via aacrjournals.org.

Biologists Uncover History of Ancient Retroviruses as Far Back as 33 Million Years Ago

Mar 9, 2016 by News Staff

A group of scientists at Boston College, Chestnut Hill, has reconstructed the natural history of a specific retrovirus lineage — ERV-Fc — that...

The beaver Microtheriomys brevirhinus lived in what is now John Day Basin, Oregon, about 29 million years ago. The image is an artist’s rendering of the extinct giant beaver Castoroides sp., by Charles R. Knight, 1904.

Paleontologists Discover 10 New Fossil Species of Rodents in Oregon

May 29, 2015 by News Staff

Paleontologists Dr William Korth of Rochester Institute of Vertebrate Paleontology and Dr Joshua Samuels of John Day Fossil Beds National Monument have...

Pelagornis sandersi: Paleontologist Discovers Largest-Ever Flying Bird

Jul 8, 2014 by Enrico de Lazaro

Pelagornis sandersi – a newly discovered extinct species of bird that lived in what is now North America about 28 million years ago – is the largest...

Nimbacinus dicksoni. Image credit: Anne Musser. Background: Hopetoun Falls in Victoria, Australia. Image credit: David Iliff / CC-BY-SA 3.0.

Nimbacinus dicksoni: Australia’s Extinct Marsupial Hunted Large Prey

Apr 10, 2014 by News Staff

Nimbacinus dicksoni, an ancient meat-eating marsupial that lived in Australia during Oligocene and Miocene between 24 and 5.3 million years ago, had the...

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