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Phorusrhacos is an extinct genus of giant flightless terror birds that inhabited South America during the Miocene epoch. Phorusrhacos was one of the dominant land predators in South America at the time it existed. It is thought to have lived in woodlands and grasslands.
Hapalops is an extinct genus of ground sloth from the Early to Late Miocene of Brazil, Bolivia, Colombia, and Argentina in South America.
Palaeospheniscus bergi is a species of the extinct penguin genus Palaeospheniscus. It stood about 60 to 75 centimetres high in life, or somewhat smaller on average than the extant African penguin.
Paraptenodytes brodkorbi is a proposed, but possibly invalid, species of extinct penguin in the genus Paraptenodytes. The bird was probably about the size of a king penguin. Known material is limited to a single humerus, Early Miocene in age, found in the Monte León Formation near Puerto San Julián in Santa Cruz Province, Argentina. It exists as an unnumbered specimen in the collection of the Museo Argentino de Ciencias Naturales.
Victorlemoinea is an extinct litoptern genus of the family Sparnotheriodontidae, that lived from the Early to Middle Eocene. Fossils of Victorlemoinea have been found in the Las Flores, Sarmiento and Koluel Kaike Formations of Argentina, the Itaboraí Formation of Brazil and La Meseta Formation, Antarctica.
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Patagornis is a genus of extinct flightless predatory birds of the family Phorusrhacidae. Known as "terror birds", these lived in what is now Argentina during the Early and Middle Miocene; the Santa Cruz Formation in Patagonia contains numerous specimens. Patagornis was an agile, medium sized Patagornithine and was likely a pursuit predator.
Octodontotherium is an extinct genus of ground sloth of the family Mylodontidae, endemic to South America during the Late Oligocene (Deseadan). It lived from 29 to 23 Mya, existing for approximately 6 million years.
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Parastrapotherium is an extinct genus of South American land mammal that existed from the Late Oligocene to the Early Miocene. The genus includes some of the largest and smallest known astrapotherian, but at present no generally recognized description can adequately characterize it.
Lomaphorus is a possibly dubious extinct genus of glyptodont that lived during the Pleistocene in eastern Argentina. Although many species have been referred, the genus itself is possibly dubious or synonymous with other glyptodonts like Neoslerocalyptus from the same region.
Arthrodytes is an extinct genus of penguins which contains a single species, whose remains have been recovered from the San Julian Formation of Patagonia. Other authors report a younger age for the fossils recovered from the Early Miocene Gaiman and Monte León Formations.
Notocetus is an extinct genus of river dolphin belonging to Squalodelphinidae. Known specimens have been found in Early Miocene marine deposits from Argentina, Italy and Peru.
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References
- ↑ Ameghino, F. (1894). "Sur les oiseaux fossiles de Patagonie; et la faune mammalogique des couches à Pyrotherium". Boletin del Instituto Geográfico Argentino. 15: 501–660.
- ↑ Liptornis hesternus at Fossilworks.org
- ↑ Olson, Storrs L. (1985). "The fossil record of birds". In Donald S. Farner; James R. King; Kenneth C. Parkes (eds.). Avian Biology, vol. VIII. Academic Press. p. 201. ISBN 0-12-249408-3.
- ↑ "†Liptornis (darter)". Paleobiology Database. Fossilworks. Retrieved 17 December 2021.
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