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Umayodus
''Umayodus'' is an extinct genus of "condylarth" mammal from the late Paleocene or the earliest Eocene.''Umayodus'' at .org It is a didolodontid which lived in what is now . It is known from the LU3-801, an isolated right , w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Didolodus
''Didolodus'' is an extinct genus of mammals from Middle Eocene Argentina. It is an ungulate mammal of uncertain affinities, possibly related to Litopterna, though this is uncertain due to the lack of reliable post-cranial remains, and for now remains Meridiungulata ''incertae sedis''.Javier Nicolás, The alleged astragalar remains of Didolodus Ameghino, 1897 (Mammalia, Panameriungulata) and a critic of isolated bone association models, 2012 Its remains were found in the Sarmiento Formation of Patagonia.''Didolodus'' at .org ''Didolodus'' probably was a quick-footed creature which probably lived like early |
Itaboraian
The Itaboraian ( pt, Itaboraiense) age is a period within the Early Eocene geologic time (53.0–50.0 Ma) epoch of the Paleogene, used more specifically with South American land mammal ages (SALMA). It follows the Riochican and precedes the Casamayoran age. Etymology This age is named after the Itaboraí Formation in the Itaboraí Basin in Itaboraí Itaboraí (, ) is a city in the state of Rio de Janeiro in Brazil, that belongs to the Rio de Janeiro metropolitan area. It was founded in 1672. In 2020, it had a population of 242,543. Location Culturally, its closest municipalities are São ..., a Greater Rio municipality in the state of Rio de Janeiro in Brazil not very far away from Niterói. Formations Fossils Correlations References Bibliography ;Itaboraí Formation * * * * * * ;Bogotá Formation * * * ;Cerrejón Formation * * * * * * * * * * * * * ;Chota Formation * * ;Las Flores Formation * * * ;Koluel Kaike ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phenacodus
''Phenacodus'' (Greek: "deception" (phenax), "tooth' (odus)) is an extinct genus of mammals from the late Paleocene through middle Eocene, about 55 million years ago. It is one of the earliest and most primitive of the ungulates, typifying the family Phenacodontidae and the order Perissodactyla. Description The typical ''Phenacodus primaevus'' was a relatively small ungulate about long and weighed up to , of slight build, with straight limbs each terminating in five complete toes, and walking in the digitigrade fashion of the modern horse. The middle toe was the largest, and the weight of the body was mainly supported on this and the two adjoining digits, which appear to have been encased in hooves, foreshadowing the tridactyl type common in perissodactyls and certain extinct groups of ungulates. The skull was small, with proportionately minute brain; and the arched back, strong lumbar vertebrae, long and powerful tail, and comparatively feeble fore-quarters all proclaim kinsh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Didolodontidae
Didolodontidae is a possibly paraphyletic family of "condylarth" mammals known from the Paleocene to the late Eocene of South America.J. N. Gelfo. 2010. The "condylarth" Didolodontidae from Gran Barranca: history of the bunodont South American mammals until the Eocene-Oligocene transition. In R. H. Madden, A. A. Carlini, M. G. Vucetich, R. F. Kay (eds.), The Paleontology of Gran Barranca: Evolution and Environmental Change through the Middle Cenozoic of Patagonia 130-14 References Paleocene first appearances Eocene extinctions Prehistoric mammal families Condylarths Meridiungulata {{Paleo-mammal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paleocene
The Paleocene, ( ) or Palaeocene, is a geological epoch that lasted from about 66 to 56 million years ago (mya). It is the first epoch of the Paleogene Period in the modern Cenozoic Era. The name is a combination of the Ancient Greek ''palaiós'' meaning "old" and the Eocene Epoch (which succeeds the Paleocene), translating to "the old part of the Eocene". The epoch is bracketed by two major events in Earth's history. The K–Pg extinction event, brought on by an asteroid impact and possibly volcanism, marked the beginning of the Paleocene and killed off 75% of living species, most famously the non-avian dinosaurs. The end of the epoch was marked by the Paleocene–Eocene Thermal Maximum (PETM), which was a major climatic event wherein about 2,500–4,500 gigatons of carbon were released into the atmosphere and ocean systems, causing a spike in global temperatures and ocean acidification. In the Paleocene, the continents of the Northern Hemisphere were still connected v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protungulatum
''Protungulatum'' ('first ungulate') is a extinct genus of pan-euungulate mammals within extinct family Protungulatidae, and also one of the earliest known placental mammals in the fossil record, that lived in North America from the Late Cretaceous to early Paleocene.Maeva Orliac (2016."The inner ear of ''Protungulatum'' (Pan-Euungulata, Mammalia)"Journal of Mammalian Evolution 23(4) Fossils of this genus were first found in the Bug Creek Anthills in northeastern Montana. The Bug Creek Anthills were initially believed to be Late Cretaceous (latest Maastrichtian) because of the presence of the remains of non-avian dinosaurs and common Cretaceous mammals, but these were later shown to have been reworked from Late Cretaceous strata, and consequently the Bug Creek Anthills are currently believed to be Early Paleocene (Puercan) in age. Remains from the Ravenscrag Formation of Saskatchewan, Canada have been assigned to ''Protungulatum donnae''. These remains may also be Cretace ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ernestokokenia
''Ernestokokenia'' is an extinct genus of mammal, belonging to the Didolodontidae. It lived during the Early Eocene and the Middle Eocene, and its fossils were discovered in South America. Description This genus is only known from its teeth, and it is then impossible to reconstruct its exact appearance. From comparison with similar and better known animals such as ''Didolodus'', its size is estimated between 60 centimeters and a meter long. ''Ernestokokenia'' was characterized by very simple molars and premolars, with a bunodont structure, similar to those of ''Didolodus''. The upper third and fourth molar were differently shaped and lacked a mesostyle. The labial and lingual cingulum were well developed. Classification ''Ernestokokenia'' was a member of the Didolodontidae, an enigmatic clade of south-american mammals typicals of the early Cenozoic The Cenozoic ( ; ) is Earth's current geological era, representing the last 66million years of Earth's history. It is c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paulogervaisia
''Paulogervaisia'' is an extinct genus of mammal, belonging to the family Didolodontidae. Its fossilized remains have been found in South America. Description This genus is known only from fossilized teeth, and it is therefore impossible to reconstruct exactly its appearance. Compared with the remains of better known forms, such as his relative '' Didolodus'', it can be inferred that ''Paulogervaisia'' could reach one meter in length. ''Paulogervaisia'' is characterized by a third upper molar as wide than the second, and by a metaconus in a more lingual position than the paracone. The mesostyle was smaller than in ''Didolodus''. The third lower molar had an entoconid as large than the hypoconulid. Classification ''Paulogervaisia'' is a member of the Didolodontidae, a mysterious clade of south american mammals from the early Cenozoic, whose exact relationships are not well known. The type species is ''Paulogervaisia inusta'', described by Florentino Ameghino in 1901, based on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lamegoia
''Lamegoia'' is an extinct genus of mammals, belonging to the family Didolodontidae. It contains a single species, ''Lamegoia conodonta'', which lived during the Late Paleocene in what is now South America. Description This animal is only known from a few fossil teeth, and reconstructing its appearance is therefore impossible. From comparison with some of his relatives, it is assumed it may have been 75 centimeters long. ''Lamegoia'' was characterized by bunodont teeth, quite similar to ''Didolodus'' but more archaic ; the lower molars possessed a complete trigonid. Classification ''Lamegoia'' is a member of the Didolodontidae, a badly known clade of south-american mammals from the early Cenozoic. ''Lamegoia conodonta'' was described in 1952 by Carlos de Paula Couto, over fossilized teeth found near São José de Itaborai in Brazil. Paleobiology ''Lamegoia'' possessed transversal and highly wavy Hunter-Schreger band Hunter-Schreger bands, commonly abbreviated as H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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