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Stegotetrabelodon
''Stegotetrabelodon'' ("four roofed tusked-tooth") is an extinct genus of primitive elephantid from the Late Miocene to Early Pliocene of Africa, the Arabian Peninsula, and Italy. It is the earliest and most primitive member of the family, notably retaining long lower tusks, which are the longest known of any proboscidean. Species and evolution ''Stegotetrabelodon'' is suggested to have probably evolved from the "tetralophodont gomphothere" '' Tetralophodon''. The earliest species ''S. emiratus'' is known from the Late Miocene Baynunah Formation of the United Arab Emirates on the Arabian Peninsula, dating to around 8-6 million years ago. ''S. orbus'' is known from the Late Miocene-Early Pliocene in East Africa (Kenya, Uganda), spanning from around 7.5 million years ago to possibly as late as 4.2 million years ago. The species ''S. syrticus'' is known from the Sahabi site in Libya, dating to around 6.8–5.3 million years ago, with remains of the species also reported from the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elephantidae
Elephantidae is a family (biology), family of large, herbivorous proboscidean mammals which includes the living Elephant, elephants (belonging to the genera ''Elephas'' and ''Loxodonta''), as well as a number of extinct genera like ''Mammuthus'' (mammoths) and ''Palaeoloxodon''. They are large terrestrial animal, terrestrial mammals with a snout modified into a Elephant#Trunk, trunk and teeth modified into tusks. Most Genus, genera and species in the family are extinction, extinct. The family was first described by John Edward Gray in 1821, and later assigned to taxonomic ranks within the order Proboscidea. Elephantidae has been revised by various authors to include or exclude other extinct proboscidean genera. Description Elephantids are distinguished from more basal proboscideans like gomphotheres by their teeth, which have parallel lophs, formed from the merger of the cusps found in the teeth of more basal proboscideans, which are bound by cementum. In later elephantids, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baynunah Formation
The Baynunah Formation is a palaeontological formation located in the western region of the Emirate of Abu Dhabi, the United Arab Emirates. It dates to the Upper Miocene epoch of the Neogene period in the Cenozoic Era. Geology Fauna Fossils of the hippopotamus genus Archaeopotamus have been found in the formation Birds Mammals Artiodactyls = Bovids = = Giraffids = = Hippotamids = = Suidae = Carnivorans Perissodactyls Primates Proboscideans Rodents Fish Stegotetrabelodon footprints Footprints attributed to ''Stegotetrabelodon'' have been found in the formation. See also * * * History of the United Arab Emirates * List of fossil sites This list of fossil sites is a worldwide list of localities known well for the presence of fossils. Some entries in this list are notable for a single, unique find, while others are notable for the large number of fossils found there. Many of ... References Further reading * (1993); ''Wildli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Al Dhafra, Abu Dhabi
Al Dhafra Region (), known until 2017 as Al Gharbia or the Western Region (), is one of three Municipal Regions in the Emirate of Abu Dhabi. Forming the western part of the United Arab Emirates, it is by far the largest region by area, occupying 71 % of the Abu Dhabi emirate's total area, yet the smallest by population and population density, and thus a rather remote region of the Emirate of Abu Dhabi, similar to the Eastern Region. The capital of Al Dhafra Region is Madinat Zayed (Bida Zayed). The new official name was already the historical name of the westernmost region of former Trucial Oman, which was ''Dhafrah''. It is significant for its natural resources, particularly gas and petroleum. Its reserves of hydrocarbons account for 90% of the Emirate's reserves, which in turn account for 90% of the country's reserves, and are important for the local economy. Demographics The Region had a population of 202,154 as of the Census of 2010 (including Islands Region with 17,64 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Late Miocene
The Late Miocene (also known as Upper Miocene) is a sub-epoch of the Miocene epoch (geology), Epoch made up of two faunal stage, stages. The Tortonian and Messinian stages comprise the Late Miocene sub-epoch, which lasted from 11.63 Ma (million years ago) to 5.333 Ma. The evolution of ''Homo'' The gibbons (family Hylobatidae) and orangutans (genus ''Pongo'') were the first groups to split from the line leading to the hominins, including humans, then gorillas (genus ''Gorilla''), and finally chimpanzees and bonobos (genus ''Pan (genus), Pan''). The splitting date between hominin and chimpanzee lineages is placed by some between 4 and 8 million years ago, that is, during the Late Miocene. References External links GeoWhen Database - Late Miocene Miocene, .03 Miocene geochronology, 03 Messinian, * Tortonian, * {{geochronology-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neogene Mammals Of Europe
The Neogene ( ,) is a geologic period and system that spans 20.45 million years from the end of the Paleogene Period million years ago ( Mya) to the beginning of the present Quaternary Period million years ago. It is the second period of the Cenozoic and the eleventh period of the Phanerozoic. The Neogene is sub-divided into two epochs, the earlier Miocene and the later Pliocene. Some geologists assert that the Neogene cannot be clearly delineated from the modern geological period, the Quaternary. The term "Neogene" was coined in 1853 by the Austrian palaeontologist Moritz Hörnes (1815–1868). The earlier term Tertiary Period was used to define the span of time now covered by Paleogene and Neogene and, despite no longer being recognized as a formal stratigraphic term, "Tertiary" still sometimes remains in informal use. During this period, mammals and birds continued to evolve into modern forms, while other groups of life remained relatively unchanged. The first humans (''H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prehistoric Placental Genera
Prehistory, also called pre-literary history, is the period of human history between the first known use of stone tools by hominins million years ago and the beginning of recorded history with the invention of writing systems. The use of symbols, marks, and images appears very early among humans, but the earliest known writing systems appeared years ago. It took thousands of years for writing systems to be widely adopted, with writing having spread to almost all cultures by the 19th century. The end of prehistory therefore came at different times in different places, and the term is less often used in discussing societies where prehistory ended relatively recently. It is based on an old conception of history that without written records there could be no history. The most common conception today is that history is based on evidence, however the concept of prehistory hasn't been completely discarded. In the early Bronze Age, Sumer in Mesopotamia, the Indus Valley Civilis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gomphotheres
Gomphotheres are an extinct group of proboscideans related to modern Elephant, elephants. First appearing in Africa during the Oligocene, they dispersed into Eurasia and North America during the Miocene and arrived in South America during the Pleistocene as part of the Great American Interchange. Gomphotheres are a Paraphyly, paraphyletic group ancestral to Elephantidae, which contains modern elephants, as well as Stegodontidae. While most famous forms such as ''Gomphotherium'' had long lower jaws with tusks, the Plesiomorphy and symplesiomorphy, ancestral condition for the group, some later members developed shortened (brevirostrine) lower jaws with either vestigial or no lower tusks and outlasted the long-jawed gomphotheres. This change made them look very similar to modern elephants, an example of parallel evolution. During the Pliocene and Early Pleistocene, the diversity of gomphotheres declined, ultimately becoming extinct outside of the Americas. The last two genera, ''Cuv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pliocene Proboscideans
The Pliocene ( ; also Pleiocene) is the 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 Period in the . The Pliocene follows the Epoch and is followed by the |
Miocene Proboscideans
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 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 hominoids into Eurasia. During the late Miocene, the connections between t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prehistoric Elephants
Prehistory, also called pre-literary history, is the period of human history between the first known use of stone tools by hominins million years ago and the beginning of recorded history with the invention of writing systems. The use of symbols, marks, and images appears very early among humans, but the earliest known writing systems appeared years ago. It took thousands of years for writing systems to be widely adopted, with writing having spread to almost all cultures by the 19th century. The end of prehistory therefore came at different times in different places, and the term is less often used in discussing societies where prehistory ended relatively recently. It is based on an old conception of history that without written records there could be no history. The most common conception today is that history is based on evidence, however the concept of prehistory hasn't been completely discarded. In the early Bronze Age, Sumer in Mesopotamia, the Indus Valley Civilis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United Arab Emirates
The United Arab Emirates (UAE), or simply the Emirates, is a country in West Asia, in the Middle East, at the eastern end of the Arabian Peninsula. It is a Federal monarchy, federal elective monarchy made up of Emirates of the United Arab Emirates, seven emirates, with Abu Dhabi serving as its capital. It shares land borders with Oman to the east and northeast, and with Saudi Arabia to the southwest; as well as maritime borders in the Persian Gulf with Qatar and Iran, and with Oman in the Gulf of Oman. , the UAE has an estimated population of over 10 million, of which 11% are Emiratis; Dubai is List of cities in the United Arab Emirates, its most populous city and is an international hub. Islam is the State religion, official religion and Arabic is the official language, while English is the most spoken language and the language of business. The United Arab Emirates Oil reserves in the United Arab Emirates, oil and natural gas reserves are the world's List of countries by pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
