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Kala Chitta Range
Kala Chitta Range (in Punjabi and ''Kālā Chiṭṭā'') is a mountain range in the Attock District of Punjab, Pakistan. "Kala" and "Chitta" are Punjabi words, meaning "black" and "white", respectively. The range thrusts eastward across the Potohar plateau towards Rawalpindi. Pakistan's Kuldana Formation is best known for its fossil Eocene mammals, including primitive cetaceans such as '' Pakicetus'', '' Ambulocetus'' and '' Attockicetus''. Kuldana mammals have been considered in different studies as coming from the early Lutetian (early Middle Eocene), late Ypresian (late early Eocene) or, more recently, encompassing much of Ypresian up to early Lutetian time (early part of the early Eocene to early Eocene medium). Kuldana Formation The Kuldana Formation is located in the Kala Chita hills and is a thin, 20-120 m thick tongue of low-lying continental red beds that lie within a much thicker sequence of foraminifera-rich marine formations. Shallow planktonic and benthic foram ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Punjab, Pakistan
Punjab (, ) is a Administrative units of Pakistan, province of Pakistan. With a population of over 127 million, it is the Demographics of Pakistan, most populous province in Pakistan and the List of first-level administrative divisions by population, second most populous subnational polity in the world. Located in the Geography of Pakistan, central-eastern region of the country, it has the #Economy, largest economy, contributing the most to Economy of Pakistan, national GDP in Pakistan. Lahore is the capital and largest city of the province. Other major cities include Faisalabad, Rawalpindi, Gujranwala and Multan. It is bordered by the Pakistani provinces of Khyber Pakhtunkhwa to the north-west, Balochistan, Pakistan, Balochistan to the south-west and Sindh to the south, as well as Islamabad Capital Territory to the north-west and Azad Kashmir to the north. It shares an India-Pakistan border, international border with the Indian states of Rajasthan and Punjab, India, Punjab to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Khyber Pakhtunkhwa
Khyber Pakhtunkhwa (; ; , ; abbr. KP or KPK), formerly known as the North West Frontier Province (NWFP), is a Administrative units of Pakistan, province of Pakistan. Located in the Northern Pakistan, northwestern region of the country, Khyber Pakhtunkhwa is the fourth largest province of Pakistan by land area and the third-largest province by population. It is bordered by Balochistan, Pakistan, Balochistan to the south; Punjab, Pakistan, Punjab, Islamabad Capital Territory, and Azad Kashmir to the east; and Gilgit-Baltistan to the north and northeast. It shares an Durand Line, international border with Afghanistan to the west. Khyber Pakhtunkhwa has a varied geography of rugged mountain ranges, valleys, rolling foothills, and dense agricultural farms. While it is the third-largest Pakistani province in terms of both its population and Economy of Khyber Pakhtunkhwa, its economy, it is geographically the smallest. Khyber Pakhtunkhwa's share of Pakistan's GDP has historically com ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Attock District
Attock District ( Punjabi/Urdu), known as Campbellpur District during British Raj, is a district, located on the Pothohar Plateau, in north western Punjab, Pakistan; created in April 1904. According to 2023 Pakistani census population of Attock District is 2,133,005 (2.1 million), making it the 23rd most populous district of the province behind Rajanpur district and overall the 37th most populous district in Pakistan. Etymology The district was formed as ''Campbellpur District'' after Commander-in-Chief of British forces Sir Colin Campbell . Later, in 1978, district name was changed to Attock after the major and historical city of Attock to reflect the older, historical name of the region. The word "Attock" in itself is derived from the word "Atak" in local languages which means blockade, barrier or obstruction. One interpretation of the name attributes it to Mughal Emperor Akbar who encountered difficulties crossing the river therefore the city was named Attock by hi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Potohar Plateau
The Pothohar Plateau (, : ''Pо̄ṭhoā̀r Paṭhār''; , ''Satāh Murtafā Pо̄ṭhohār''), also spelled Pothwar, is a plateau in the Sind Sagar Doab of northern Punjab, Pakistan, located between the Indus and Jhelum rivers. Etymology A late medieval Persian manuscript, ''Kaigoharnameh'', written by ''Raezadeh Diwan Duni Chand'' in A.D. 1725 to the order of Gakhar chiefs presents a detailed history of Gakhars in northern Punjab. The term in the manuscript has been written variously as ''Pathwar'', ''Pot har'' and ''Pothohar''. According to Ahmad Hasan Dani, the term is derived from ''Prshtawar'' in Sanskrit, ''Prshta'' meaning "back" of the Indus River and ''War'' meaning "area". Geography Pothohar Plateau is bounded on the east by the Jhelum River, on the west by the Indus River, on the north by the Kala Chitta Range and the Margalla Hills, and on the south by the Salt Range. The southern end of the plateau is bounded by the Thal desert. The 5000 square miles of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rawalpindi
Rawalpindi is the List of cities in Punjab, Pakistan by population, third-largest city in the Administrative units of Pakistan, Pakistani province of Punjab, Pakistan, Punjab. It is a commercial and industrial hub, being the list of cities in Pakistan by population, fourth-most populous city in Pakistan. Located near the Soan River in north-western Punjab, it is the world's third largest Punjabi language, Punjabi-speaking city (after Lahore and Faisalabad). Rawalpindi is situated adjacent to Pakistan's capital Islamabad; and the two are jointly known as "twin cities", constituting a single Islamabad–Rawalpindi metropolitan area, contiguous metropolitan area. Prior to Islamabad's establishment, Rawalpindi served as the country's federal capital from 1959 to 1967. Located on the Pothohar Plateau of northern Punjab, Rawalpindi remained a small town of little importance up until the 18th century. The region is known for its ancient heritage, for instance the neighbouring city of T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eocene
The Eocene ( ) is a geological epoch (geology), epoch that lasted from about 56 to 33.9 million years ago (Ma). It is the second epoch of the Paleogene Period (geology), Period in the modern Cenozoic Era (geology), Era. The name ''Eocene'' comes from the Ancient Greek (''Ēṓs'', 'Eos, Dawn') and (''kainós'', "new") and refers to the "dawn" of modern ('new') fauna that appeared during the epoch.See: *Letter from William Whewell to Charles Lyell dated 31 January 1831 in: * From p. 55: "The period next antecedent we shall call Eocene, from ήως, aurora, and χαινος, recens, because the extremely small proportion of living species contained in these strata, indicates what may be considered the first commencement, or ''dawn'', of the existing state of the animate creation." The Eocene spans the time from the end of the Paleocene Epoch to the beginning of the Oligocene Epoch. The start of the Eocene is marked by a brief period in which the concentration of the carbon isoto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pakicetus
''Pakicetus'' (meaning 'whale from Pakistan') is an extinct genus of amphibious cetacean of the family Pakicetidae, which was endemic to the Indian Subcontinent during the Ypresian (early Eocene) period, about 50 million years ago. It was a wolf-like mammal, about long, and lived in and around water where it ate fish and other animals. The name Pakicetus comes from the fact that the first fossils of this extinct amphibious whale were discovered in Pakistan. The vast majority of paleontologists regard it as the most basal whale, representing a transitional stage between land mammals and whales. It belongs to the even-toed ungulates with the closest living non-cetacean relative being the hippopotamus. Description Based on the sizes of specimens, and to a lesser extent on composite skeletons, species of ''Pakicetus'' are thought to have been to in length. ''Pakicetus'' looked very different from modern cetaceans, and its body shape more resembled those of land-dwelling h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ambulocetus
''Ambulocetus'' (Latin ''ambulare'' "to walk" + ''cetus'' "whale") is a genus of early Semiaquatic, amphibious cetacean from the Kuldana Formation in Pakistan, roughly 48 or 47 million years ago during the Early Eocene (Lutetian). It contains one species, ''Ambulocetus natans'' (Latin ''natans'' "swimming"), known solely from a near-complete skeleton. ''Ambulocetus'' is among the best-studied of Eocene cetaceans, and serves as an instrumental find in the study of evolution of cetaceans, cetacean evolution and their transition from land to sea, as it was the first cetacean discovered to preserve a suite of adaptations consistent with an amphibious lifestyle. ''Ambulocetus'' is classified in the group Archaeoceti—the ancient forerunners of modern cetaceans whose members span the transition from land to sea—and in the family (biology), family Ambulocetidae, which includes ''Himalayacetus'' and ''Gandakasia'' (also from the Eocene of the Indian subcontinent). ''Ambulocetus'' ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Attockicetus
''Attockicetus'' is an extinct genus of remingtonocetid early whale known from the Middle Eocene (Lutetian) Kuldana Formation in the Kala Chitta Hills, in the Attock District of Punjab, Pakistan. ''Attockicetus'' is described based on fragmentary cranial material. The holotype specimen, H-GSP 96232, includes a fragmentary rostrum, an endocast (interior of cranium), and an ectotympanic (ear bone). The specimen also had preserved cheek teeth, P3-M3, which is rare in remingtonocetids. ''Attockicetus'' is primitive in the retention of large protocones on the upper molars and the location of the orbits anteriorly on the skull. It is probably the most plesiomorphic remingtonocetid. Additional dental material was found at the type locality and assigned to ''Attockicetus''. Compared to pakicetid teeth found at the same locality, the P3 of ''Attockicetus'' is much lower, angled anteriorly, and has a very long posterior extension. A long diastema separates P3 from P4 and P3 is longer th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lutetian
The Lutetian is, in the geologic timescale, a stage (stratigraphy), stage or age (geology), age in the Eocene. It spans the time between . The Lutetian is preceded by the Ypresian and is followed by the Bartonian. Together with the Bartonian it is sometimes referred to as the Middle Eocene Subepoch. Stratigraphic definition The Lutetian was named after Lutetia, the Latin language, Latin name for the city of Paris. The Lutetian Stage was introduced in scientific literature by French geologist Albert de Lapparent in 1883 and revised by A. Blondeau in 1981. The base of the Lutetian Stage is at the first appearance of the nanofossil ''Blackites inflatus'', according to an official reference profile (GSSP) established in 2011. Of two candidates located in Spain, the Gorrondatxe section was chosen.See thwebsite of Eustoquio Molinafor these candidates. The top of the Lutetian (the base of the Bartonian) is at the first appearance of calcareous nannofossils, calcareous nanoplankton s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ypresian
In the geologic timescale the Ypresian is the oldest age (geology), age or lowest stage (stratigraphy), stratigraphic stage of the Eocene. It spans the time between , is preceded by the Thanetian Age (part of the Paleocene) and is followed by the Eocene Lutetian Age. The Ypresian is consistent with the Lower Eocene (Early Eocene). Events The Ypresian Age begins during the throes of the Paleocene–Eocene Thermal Maximum (PETM). The Fur Formation in Denmark, the Messel shales in Germany, the Oise amber of France and Cambay amber of India are of this age. The Eocene Okanagan Highlands are an uplands subtropical to temperate series of lakes from the Ypresian. The Ypresian is additionally marked by another warming event called the Early Eocene Climatic Optimum (EECO). The EECO is the longest sustained warming event in the Cenozoic record, lasting about 2–3 million years between 53 and 50 Ma. The interval is characterized by low oxygen-18 isotopes, high levels of atmospheric pCO2 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Benthic Zone
The benthic zone is the ecological region at the lowest level of a body of water such as an ocean, lake, or stream, including the sediment surface and some sub-surface layers. The name comes from the Ancient Greek word (), meaning "the depths". Organisms living in this zone are called benthos and include microorganisms (e.g., bacteria and Fungus, fungi) as well as larger invertebrates, such as crustaceans and polychaetes. Organisms here, known as bottom dwellers, generally live in close relationship with the substrate and many are permanently attached to the bottom. The benthic boundary layer, which includes the bottom layer of water and the uppermost layer of sediment directly influenced by the overlying water, is an integral part of the benthic zone, as it greatly influences the biological activity that takes place there. Examples of contact soil layers include sand bottoms, rocky outcrops, coral, and bay mud. Description Oceans The benthic region of the ocean begins at t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
