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Neolicaphrium
''Neolicaphrium'' is an extinct genus of ungulate mammal belonging to the extinct order Litopterna. This animal lived from the Late Pliocene (Chapadmalalan) to the Late Pleistocene (Lujanian) in southern South America, being the last survivor of the family Proterotheriidae. Species The genus includes two species, the type species ''N. recens'' and ''N. major''. The fossil found of ''N. major'', one jaw, come from the Miramar Formation in Chapadmalal, Argentina and correspond to the Chapadmalalan mammal age of South America (4.0 to 3.0 million years ago, in the Pliocene). ''N. recens'' appeared in the Ensenadan age (1.2-0.8 million years ago) and the species survived until the Lujanian age (800,000 to 11,000 years ago). Fossils of this species have been found in the Argentine provinces of the northeast, in Córdoba Province, Argentina, Córdoba, Corrientes Province, Corrientes, Tezzanos Pinto Formation, Santa Fe Province, Santa Fe and Santiago del Estero Province, Santiago del E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Proterotheriidae
Proterotheriidae is an extinction, extinct family of Litopterna, litoptern ungulates known from the Eocene-Late Pleistocene of South America. Members of the group were small-medium sized cursorial Herbivore, herbivores with brachydont Tooth, teeth, with their Toe, toes showing progressive reduction, with later members of the group bearing weight on a single large toe similar to living Horse, horses. Description Two subfamilies and 18 genera of Proterotheriidae are known. All forms were small or medium-sized. Typical is a reduction of the number of toes and brachydont or mesodont teeth. The family is recorded since the late Palaeocene. Various fossils are known from many parts of the South American continent. The diversity decreased in the Miocene to Pliocene and it has been assumed for a long time that they entirely disappeared in the late Pliocene. However, fossils found in Argentina, Brazil and Uruguay show that one member of the group, ''Neolicaphrium recens'' survived into ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Litopterna
Litopterna (from "smooth heel") is an extinction, extinct order of South American native ungulates that lived from the Paleocene to the Pleistocene-Holocene around 62.5 million to 12,000 years ago (or possibly as late as 3,500 years ago), and were also present in Antarctica during the Eocene. They represent the second most diverse group of South American ungulates after Notoungulata. It is divided into nine families, with Proterotheriidae and Macraucheniidae being the most diverse and last surviving families. Diversity The body forms of many litopterns, notably in the limb and skull structure, are broadly similar to those of living ungulates, unlike other South American native ungulate groups, which are often strongly divergent from living ungulates. Paleocene and Eocene litopterns generally had small body masses, with ''Protolipterna'' (Protolipternidae) estimated to have had a body mass of , though the Eocene Sparnotheriodontidae, sparnotheriodontids were considerably large ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sopas Formation
The Sopas Formation is a Lujanian geologic formation in Uruguay. Fossil content The following fossils have been reported from the formation: * '' Antifer''''Antifer'' at .org * '''' * '' Glossotherium robustum'' * Gomphotheridae indet. * '' |
Salto Department
Salto Department () is a Departments of Uruguay, department of the northwestern region of Uruguay. It has an area of about and a population of about 136,197. Its capital is the city of Salto, Uruguay, Salto. It borders Artigas Department to its north, Paysandú Department to its south, the departments of Rivera Department, Rivera and Tacuarembó Department, Tacuarembó to its east and has the Río Uruguay flowing at its west, separating it from Argentina. History The first division of the Republic in six departments happened on 27 January 1816. Two more departments were formed later in that year. At the time, Paysandú Department included all the territory north of the Río Negro (Uruguay), Río Negro, which included the actual departments of Artigas, Rivera, Tacuarembó, Salto, Paysandú and Río Negro. On 17 June 1837 a new division of Uruguay was made and the department of Salto was created including the actual Artigas Department. Its final borders were defined on 1 October 18 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thoatherium
''Thoatherium'' (meaning "active swift-beast") is an extinct genus of litoptern mammals from the Early Miocene of Argentina. Fossils of the genus have been found in the Santa Cruz Formation in Argentina.''Thoatherium'' at .org Description With a length of , the -like ''Thoatherium'' was a small representative of the order . Judging from its long legs, it was a fast runner. ''Thoatherium'' had remarkably reduced toes; ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Miocene
The Miocene ( ) is the first epoch (geology), geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recent" because it has 18% fewer modern marine invertebrates than the Pliocene has. The Miocene followed the Oligocene and preceded the Pliocene. As Earth went from the Oligocene through the Miocene and into the Pliocene, the climate slowly cooled towards a series of ice ages. The Miocene boundaries are not marked by distinct global events but by regionally defined transitions from the warmer Oligocene to the cooler Pliocene Epoch. During the Early Miocene, Afro-Arabia collided with Eurasia, severing the connection between the Mediterranean and Indian Oceans, and allowing the interchange of fauna between Eurasia and Africa, including the dispersal of proboscideans and Ape, hominoids into Eurasia. During the late Miocene, the conn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pliocene
The Pliocene ( ; also Pleiocene) is the epoch (geology), epoch in the geologic time scale that extends from 5.33 to 2.58See the 2014 version of the ICS geologic time scale million years ago (Ma). It is the second and most recent epoch of the Neogene Period in the Cenozoic, Cenozoic Era. The Pliocene follows the Miocene Epoch and is followed by the Pleistocene Epoch. Prior to the 2009 revision of the geologic time scale, which placed the four most recent major glaciations entirely within the Pleistocene, the Pliocene also included the Gelasian Stage, which lasted from 2.59 to 1.81 Ma, and is now included in the Pleistocene. As with other older geologic periods, the Stratum, geological strata that define the start and end are well-identified but the exact dates of the start a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Santiago Del Estero Province
Santiago del Estero (), also known simply as Santiago, is a Provinces of Argentina, province in the north of Argentina. Neighboring provinces, clockwise from the north, are Salta Province, Salta, Chaco Province, Chaco, Santa Fe Province, Santa Fe, Córdoba Province, Argentina, Córdoba, Catamarca Province, Catamarca and Tucumán Province, Tucumán. History The Indigenous peoples, indigenous inhabitants of these lands were the Juríes-Tonocotés, Sanavirones and other tribes. Santiago del Estero is home to about 100,000 speakers of the Santiagueño Quechua, local variety of Quechua languages, Quechua, making this the southernmost outpost of the language of the Incas. When the language reached the area, and how, remains unclear—it may even have arrived only with the native troops that accompanied the first Spanish expeditions. Diego de Rojas first reached this land in 1542. Francisco de Aguirre (conquistador), Francisco de Aguirre founded the city of Santiago del Estero in 1553 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cursorial
A cursorial organism is one that is adapted specifically to run. An animal can be considered cursorial if it has the ability to run fast (e.g. cheetah) or if it can keep a constant speed for a long distance (high endurance). "Cursorial" is often used to categorize a certain locomotor mode, which is helpful for biologists who examine behaviors of different animals and the way they move in their environment. Cursorial adaptations can be identified by morphological characteristics (e.g. loss of lateral digits as in ungulate species), physiological characteristics, maximum speed, and how often running is used in life. Much debate exists over how to define a cursorial animal specifically. The most accepted definitions include that a cursorial organism could be considered adapted to long-distance running at high speeds or has the ability to accelerate quickly over short distances. Among vertebrates, animals under 1 kg of mass are rarely considered cursorial, and cursorial behaviors ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dactyly
In biology, dactyly is the arrangement of digits (fingers and toes) on the hands, feet, or sometimes wings of a tetrapod animal. The term is derived from the Greek word () meaning "finger." Sometimes the suffix "-dactylia" is used. The derived adjectives end with "-dactyl" or "-dactylous." As a normal feature Pentadactyly Pentadactyly (from Greek "five") is the condition of having five digits on each limb. It is traditionally believed that all living tetrapods are descended from an ancestor with a pentadactyl limb, although many species have now lost or transformed some or all of their digits by the process of evolution. However, this viewpoint was challenged by Stephen Jay Gould in his 1991 essay "Eight (or Fewer) Little Piggies," where he pointed out polydactyly in early tetrapods and described the specializations of digit reduction. Despite the individual variations listed below, the relationship is to the original five-digit model. In reptiles, the limbs are pentad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
