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Boreostemma
''Boreostemma'' is an extinct genus of glyptodonts from northern South America. Fossils assigned to the genus were first described as belonging to '' Asterostemma'' from southern South America, but have been placed in the new genus ''Boreostemma'' by Carlini et al. in 2008. The type species is ''B. pliocena''. Fossils of ''Boreostemma'' have been found in the Honda Group of Colombia, in Peru and Venezuela. Etymology The genus name ''Boreostemma'' is a combination of ''stemma'', taken from '' Asterostemma'', and ''boreo'' is derived from borealis, meaning "northern", to distinguish the northern South American genus from the southern ''Asterostemma''. Species Four species have been described in the genus ''Boreostemma''.''Boreostemma'' at |
Laventan
The Laventan ( es, Laventense) age is a period of geologic time (13.8 to 11.8 Ma) within the Middle Miocene epoch of the Neogene, used more specifically within the SALMA classification in South America. It follows the Colloncuran and precedes the Mayoan age.Madden et al., 1997 Etymology The age is named after the Miocene Lagerstätte La Venta, where a rich biodiversity from the Middle Miocene has been recovered from the Honda Group. Formations Fossil content Correlations The Laventan (13.8 to 11.8 Ma) correlates with: * NALMA ** latest Barstovian (15.97-13.65 Ma)Barstovian at Fossilworks.org ** early |
Honda Group, Colombia
The Honda Group ( es, Grupo Honda, Tsh, Ngh) is a geological group of the Upper and Middle Magdalena Basins and the adjacent Central and Eastern Ranges of the Colombian Andes. The group, in older literature also defined as formation, is in its present-day type section in the Tatacoa Desert in the department of Huila subdivided into two main formations; La Victoria and Villavieja. The group was originally defined in and named after Honda, Tolima, but has been redefined based on the many fossil finds in the Tatacoa Desert, to the south. In the original type section of its occurrence, the thick group is subdivided into three formations, from old to young; Cambrás, San Antonio and Los Limones. The group dates to the Neogene period; in its broadest definition from the Late Oligocene to Late Miocene, and in the redefined type section restricted to the Laventan age of the South American Land Mammal Ages (SALMA), equivalent to the Middle Miocene Serravallian epoch. The Honda Gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South American Land Mammal Age
The South American land mammal ages (SALMA) establish a geologic timescale for prehistoric South American fauna beginning 64.5 Mya (unit), Ma during the Paleocene and continuing through to the Late Pleistocene (0.011 Ma). These periods are referred to as ages, stages, or intervals and were established using geographic place names where fossil materials where obtained.Flynn & Swisher, 1995 The basic unit of measure is the first/last boundary statement. This shows that the first appearance event of one taxon is known to predate the last appearance event of another. If two taxa are found in the same fossil quarry or at the same stratigraphic horizon, then their age-range zones overlap. Background South America was an island continent for much of the Cenozoic, or the "Age of Mammals". As a result, its mammals evolved in their own unique directions, as Australia and Madagascar still have today. Paleogeographic timeline A simplified paleogeography, paleogeographic timeline of South ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Santacrucian
The Santacrucian age is a period of geologic time (17.5 – 16.3 Ma) within the Early Miocene epoch of the Neogene, used more specifically with SALMA classification in South America. It follows the Colhuehuapian and precedes the Friasian age. Etymology The age is named after the Santa Cruz Formation in the Austral/Magallanes Basin of southern Patagonia Patagonia () refers to a geographical region that encompasses the southern end of South America, governed by Argentina and Chile. The region comprises the southern section of the Andes Mountains with lakes, fjords, temperate rainforests, and gl ..., Argentina and Chile. Formations Fossils References Bibliography ;Santa Cruz Formation * * * * * * * * * * * * * * * * ;Aisol Formation * * ;Cantaure Formation * ;Castillo Formation * * * * * ;Cerro Boleadores Formation * ;Chaguaramas Formation * ;Chilcatay Formation * * * * ;Cura-Mallín Group * * * ;Gran Bajo del Gualich ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glyptodont
Glyptodonts are an extinct subfamily of large, heavily armoured armadillos. They arose in South America around 48 million years ago and spread to southern North America after the continents became connected several million years ago. The best-known genus within the group is ''Glyptodon''. While they were formerly considered to constitute the distinct family Glyptodontidae, in 2016, an analysis of ''Doedicurus'' Mitochondrial DNA (also known as mtDNA / mDNA) found that it was, in fact, nested within the modern armadillos as the sister group of a clade consisting of Chlamyphorinae and Tolypeutinae. For this reason, glyptodonts and all armadillos but '' Dasypus'' were relocated to a new family, Chlamyphoridae, and glyptodonts were demoted from the former family Glyptodontidae to a subfamily. Evolution Glyptodonts first evolved during the Eocene in South America, which remained their center of species diversity. For example, an Early Miocene glyptodont with many primitive feature ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asterostemma Depressa
''Asterostemma'' is an extinct genus of glyptodont. It lived during the Middle Miocene, and its fossilized remains were discovered in South America. Description Like all its close relatives, ''Asterostemma'' had a carapace made of fused osteoderms, protecting most of its body. The ornamentation of its osteoderms was similar to other basal genera of glyptodonts, such as ''Propalaehoplophorus'', with clear and shallow furrows, and the central figures were rounded. Those were surrounded by a single row of peripheral figures. The caudal cuirass of ''Asterostemma'' was formed by rings and a caudal tube, forming a long and thin structure, similar to those of modern armadillos. Classification ''Asterostemma depressa'' was first described by Florentino Ameghino in 1889, based on fossil remains found in Middle Miocene terrains of Argentina. Other species attributed to this genus, such as ''A. acostae'', ''A. gigantea'', and ''A. venezolensis'' ; subsequent revisions of the fossil re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Departments Of Peru
According to the ''Organic Law of Regional Governments'', the regions ( es, regiones) are, with the departments, the first-level administrative subdivisions of Peru. Since its Peruvian War of Independence, 1821 independence, Peru had been divided into departments of Peru, departments () but faced the problem of increasing centralization of political and economic power in its capital, Lima. After several unsuccessful regionalization attempts, the national government decided to temporarily provide the departments (including the Constitutional Province of Callao) with regional governments until the conformation of regions according to the ''Organic Law of Regional Governments'' which says that two or more departments should merge to conform a region. This situation turned the departments into ''de facto'' regional government circumscriptions. The first regional governments were elected on November 20, 2002. Under the new arrangement, the 24 Departments of Peru, departments plus the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yellow Ffff80 Pog
Yellow is the color between green and orange on the spectrum of light. It is evoked by light with a dominant wavelength of roughly 575585 nm. It is a primary color in subtractive color systems, used in painting or color printing. In the RGB color model, used to create colors on television and computer screens, yellow is a secondary color made by combining red and green at equal intensity. Carotenoids give the characteristic yellow color to autumn leaves, corn, canaries, daffodils, and lemons, as well as egg yolks, buttercups, and bananas. They absorb light energy and protect plants from photo damage in some cases. Sunlight has a slight yellowish hue when the Sun is near the horizon, due to atmospheric scattering of shorter wavelengths (green, blue, and violet). Because it was widely available, yellow ochre pigment was one of the first colors used in art; the Lascaux cave in France has a painting of a yellow horse 17,000 years old. Ochre and orpiment pigments were ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fossilworks
Fossilworks is a portal which provides query, download, and analysis tools to facilitate access to the Paleobiology Database The Paleobiology Database is an online resource for information on the distribution and classification of fossil animals, plants, and microorganisms. History The Paleobiology Database (PBDB) originated in the NCEAS-funded Phanerozoic Marine Pale ..., a large relational database assembled by hundreds of paleontologists from around the world. History Fossilworks was created in 1998 by John Alroy and is housed at Macquarie University. It includes many analysis and data visualization tools formerly included in the Paleobiology Database.{{cite web, title=Frequently asked questions, url=http://www.fossilworks.org/cgi-bin/bridge.pl?page=FAQ, publisher=Fossilworks, access-date=17 December 2021 References {{Reflist External links {{Wikidata property, P842 * [Baidu] |
Miocene
The Miocene ( ) is the first 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 is preceded by the Oligocene and is followed by 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 a single distinct global event but consist rather of regionally defined boundaries between the warmer Oligocene and the cooler Pliocene Epoch. During the Early Miocene, the Arabian Peninsula collided with Eurasia, severing the connection between the Mediterranean and Indian Ocean, and allowing a faunal interchange to occur between Eurasia and Africa, including the dispersal of proboscideans into Eurasia. During the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ucayali Department
Ucayali () is an inland department and region of Peru. Located in the Amazon rainforest, its name is derived from the Ucayali River. Its capital is the city of Pucallpa. It is the second largest department in Peru, after Loreto. Geography Boundaries The department of Ucayali is bordered by the Brazilian state of Acre on the east; the department of Madre de Dios on the southeast; Cusco on the south; Junín, Pasco and Huánuco on the west; and Loreto on the north. Demographics Population According to the 2007 Census, the Ucayali department has a population of 432,159 inhabitants, 51.4% of which (222,132) are male and 48.6% (210,027) are female. 75.3% of the population (325,347) live in urban areas while the remaining 24.7% (106,812) live in rural areas. , the Instituto Nacional de Estadística e Informática estimated the department's population to be 468,922. Languages Spanish is spoken as a first language by 87.6% of the population, while 4.1% speak Asháninka, 1. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
