Search results
Results from the WOW.Com Content Network
The Oligocene saw the emergence of parrotfishes, as the centre of marine biodiversity shifted from the Central Tethys eastward into the Indo-Pacific. [100] The fossil record of marine mammals is a little spotty during this time, and not as well known as the Eocene or Miocene, but some fossils have been found.
The first known indricothere fossils were collected from Balochistan (in modern-day Pakistan) in 1846 by a soldier named Vickary, but these fragments were unidentifiable at the time. [5] The first fossils now recognised as Paraceratherium were discovered by the British geologist Guy Ellcock Pilgrim in Balochistan in 1907–1908. His material ...
A second partial fossil bird specimen from the same deposits was previously thought to be a second Protornis specimen, but later analyses found it to be too large and to have significant morphological differences from Protornis. This bird is now considered an indeterminate trogon. [3]
Oligopithecus is a fossil primate that lived in Africa during the Early Oligocene. It is represented by one species, Oligopithecus savagei , known from one jaw bone found in Egypt . [ 3 ] [ 4 ] [ 5 ]
They existed for approximately 120 million years—the longest fossil history of any mammal lineage—but were eventually outcompeted by rodents, becoming extinct during the early Oligocene. Some authors have challenged the phylogeny represented by the cladogram above.
The Hsanda Gol Formation is a geological formation located in the Tsagan Nor Basin of central Mongolia that dates to the Rupelian age of the Oligocene epoch.It formed in continental desert-like conditions and is notable for its fossil mammals, first excavated by Roy Chapman Andrews and the American Museum of Natural History in the 1920s.
The Eocene–Oligocene extinction event, also called the Eocene-Oligocene transition (EOT) or Grande Coupure (French for "great cut"), is the transition between the end of the Eocene and the beginning of the Oligocene, an extinction event and faunal turnover occurring between 33.9 and 33.4 million years ago. [1]
[1]: 189 The Oligocene wildlife of Scotts Bluff National Monument left behind footprints that would later fossilize in the sediments of the Arikaree beds. This is one of only seven known Oligocene fossil tracksites in the western United States. [10] About 25 million years ago a stream ran roughly parallel to the modern course of the Niobrara River.