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Kibish Formation
The Omo Kibish Formation or simply Kibish Formation is a geological formation in the Lower Omo Valley of southwestern Ethiopia. It is named after the nearby Omo River and is subdivided into four members known as Members I-IV. The members are numbered in the order in which they were deposited and date between 196 ka ~ 13-4 ka. Omo Kibish and the neighboring formations ( Shungura and Usno) have produced a rich paleoanthropological record with many hominin (e.g. ''Paranthropus boisei'') and stone tool (e.g. Oldowan tools) finds. The Kibish formation, in particular, is most notable for Richard Leakey's work there in 1967 during which he and his team found one of the oldest remains of anatomically modern ''Homo sapiens''. Known as Omo Kibish 1 (Omo I), the fossil was dated to 196 ± 5 ka old and is among two other Omo remains (Omo II and Omo III) that were found in Member I. The Omo fossils were more recently (in 2022) re-dated to approximately 233 ka old. In the early 2000s a resea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Retouch (lithics)
Retouch is the act of producing scars on a stone flake after the ventral surface has been created. It can be done to the edge of an implement in order to make it into a functional tool, or to reshape a used tool. Retouch can be a strategy to reuse an existing lithic artifact and enable people to transform one tool into another tool. Depending on the form of classification that one uses, it may be argued that retouch can also be conducted on a core-tool, if such a category exists, such as a hand-axe. Retouch may simply consist of roughly trimming an edge by striking with a hammerstone, or on smaller, finer flake or blade tools it is sometimes carried out by pressure flaking. Other forms of retouch may include burination, which is retouch that is conducted in a parallel orientation to the flake margin. Retouch is often taken as one of the most obvious features distinguishing a tool from a waste by-product of lithic manufacture (debitage In archaeology, debitage is all the material ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nile Perch
The Nile perch (''Lates niloticus''), also known as the African snook, Goliath perch, African barramundi , Goliath barramundi, Giant lates or the Victoria perch, is a species of freshwater fish in family Latidae of order Perciformes. It is widespread throughout much of the Afrotropical realm, being native to the Congo, Nile, Senegal, Niger and Lake Chad, Volta, Lake Turkana, and other river basins. It also occurs in the brackish waters of Lake Maryut in Egypt. The Nile perch is a fish of substantial economic and food-security importance in East Africa. Originally described as ''Labrus niloticus,'' among the marine wrasses, the species has also been referred to as ''Centropomus niloticus''. Common names include African snook, Victoria perch (a misleading trade name, as the species is not native to Lake Victoria, though they have been introduced there), and many local names in various African languages, such as the Luo name ''mbuta'' or ''mputa''. In Tanzania, it is called '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catfish
Catfish (or catfishes; order Siluriformes or Nematognathi) are a diverse group of ray-finned fish. Named for their prominent barbels, which resemble a cat's whiskers, catfish range in size and behavior from the three largest species alive, the Mekong giant catfish from Southeast Asia, the wels catfish of Eurasia, and the piraíba of South America, to detritivores (species that eat dead material on the bottom), and even to a tiny parasitic species commonly called the candiru, ''Vandellia cirrhosa''. Neither the armour-plated types nor the naked types have scales. Despite their name, not all catfish have prominent barbels or "whiskers". Members of the Siluriformes order are defined by features of the skull and swimbladder. Catfish are of considerable commercial importance; many of the larger species are farmed or fished for food. Many of the smaller species, particularly the genus ''Corydoras'', are important in the aquarium hobby. Many catfish are nocturnal, [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perciformes
Perciformes (), also called the Percomorpha or Acanthopteri, is an order or superorder of ray-finned fish. If considered a single order, they are the most numerous order of vertebrates, containing about 41% of all bony fish. Perciformes means "perch-like". Perciformes is an Order within the Clade Percomorpha consisting of "perch-like" Percomorphans. This group comprises over 10,000 species found in almost all aquatic ecosystems. The order contains about 160 families, which is the most of any order within the vertebrates. It is also the most variably sized order of vertebrates, ranging from the ''Schindleria brevipinguis'' to the marlin in the genus ''Makaira''. They first appeared and diversified in the Late Cretaceous. Among the well-known members of this group are perch and darters (Percidae), sea bass and groupers (Serranidae). Characteristics The dorsal and anal fins are divided into anterior spiny and posterior soft-rayed portions, which may be partially or compl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Equus Burchellii
Burchell's zebra (''Equus quagga burchellii'') is a southern subspecies of the plains zebra. It is named after the British explorer and naturalist William John Burchell. Common names include bontequagga, Damaraland zebra, and Zululand zebra (Gray, 1824). Burchell's zebra is the only subspecies of zebra which may be legally farmed for human consumption. Physical characteristics Like most plains zebras, females and males are about the same size, standing at the shoulder. They weigh between . Year-round reproduction observed in this subspecies in Etosha National Park, Namibia, concludes synchronization of a time budget between males and females, possibly explaining the lack of sexual dimorphism. Burchell's zebras are described as being striped on the head, the neck, and the flanks, and sparsely down the upper segments of the limbs then fading to white. One or two shadow stripes rest between the bold, broad stripes on the haunch. This main distinguishing characteristic sets the Bu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Matupi Cave
Matupi Cave is a cave in the Mount Hoyo massif of the Ituri Rainforest, Democratic Republic of the Congo, where archaeologists have found evidence for Late Stone Age human occupation spanning over 40,000 years. The cave has some of the earliest evidence in the world for microlithic tool technologies. Location and significance Matupi Cave is one of some 40 caves in the Mount Hoyo limestone massif in the Ituri rainforest, Democratic Republic of the Congo. It is a large cave (c. 7 metres high, 8 metres deep and 5 metres wide), which makes it ideal for living. The Matupi Cave site was excavated in 1973-74 by a joint archaeological expedition from the Institut des Musées Nationaux du Zaïre (DRC) and the Royal Museum for Central Africa (Tervuren, Belgium). The excavation campaign was led by professor Francis Van Noten, then head of the Prehistory-Archaeology section in Tervuren. Excavations yielded Iron Age and Late Stone Age artifacts, as well as rich faunal and sporadic palynolo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cephalophus
''Cephalophus'' is a mammal genus which contains at least fifteen species of duiker, a type of small antelope. Species Following Groves (2005), the species within ''Cephalophus'' include: * Aders's duiker ''Cephalophus adersi'' * Brooke's duiker ''Cephalophus brookei'' * Peters' duiker ''Cephalophus callipygus'' * Bay duiker ''Cephalophus dorsalis'' * Jentink's duiker ''Cephalophus jentinki'' * White-bellied duiker ''Cephalophus leucogaster'' * Red duiker ''Cephalophus natalensis'' * Black duiker ''Cephalophus niger'' * Black-fronted duiker ''Cephalophus nigrifrons'' * Ogilby's duiker ''Cephalophus ogilbyi'' * Ruwenzori duiker ''Cephalophus rubidus'' * Red-flanked duiker ''Cephalophus rufilatus'' * Yellow-backed duiker ''Cephalophus silvicultor'' * Abbott's duiker The Abbott's duiker (''Cephalophus spadix''), also known as ''minde'' in Swahili, is a large, forest-dwelling duiker (small antelope) found only in a few scattered enclaves in Tanzania. It may be a subspecies of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Giant Forest Hog
The giant forest hog (''Hylochoerus meinertzhageni''), the only member of its genus (''Hylochoerus''), is native to wooded habitats in Africa and is generally considered the largest wild member of the pig family, Suidae; however, a few subspecies of the wild boar can reach an even larger size. Despite its large size and relatively wide distribution, it was first described only in 1904. The specific name honours Richard Meinertzhagen, who shot the type specimen in Kenya and had it shipped to the Natural History Museum in England. Description The giant forest hog is, on average, the largest living species of suid. Adults can measure from in head-and-body length, with an additional tail length of . Adults stand in height at the shoulder, and can weigh from .Novak, R. M. (editor) (1999). ''Walker's Mammals of the World.'' Vol. 2. 6th edition. Johns Hopkins University Press, Baltimore. pp. 1059–1060. Kingdon, J. (1997). ''The Kingdon Guide to African Mammals.'' Academic Press Li ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carnivore
A carnivore , or meat-eater (Latin, ''caro'', genitive ''carnis'', meaning meat or "flesh" and ''vorare'' meaning "to devour"), is an animal or plant whose food and energy requirements derive from animal tissues (mainly muscle, fat and other soft tissues) whether through hunting or scavenging. Nomenclature Mammal order The technical term for mammals in the order Carnivora is ''carnivoran'', and they are so-named because most member species in the group have a carnivorous diet, but the similarity of the name of the order and the name of the diet causes confusion. Many but not all carnivorans are meat eaters; a few, such as the large and small cats (felidae) are ''obligate'' carnivores (see below). Other classes of carnivore are highly variable. The Ursids, for example: While the Arctic polar bear eats meat almost exclusively (more than 90% of its diet is meat), almost all other bear species are omnivorous, and one species, the giant panda, is nearly exclusively herbivorous. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Primate
Primates are a diverse order of mammals. They are divided into the strepsirrhines, which include the lemurs, galagos, and lorisids, and the haplorhines, which include the tarsiers and the simians (monkeys and apes, the latter including humans). Primates arose 85–55 million years ago first from small terrestrial mammals, which adapted to living in the trees of tropical forests: many primate characteristics represent adaptations to life in this challenging environment, including large brains, visual acuity, color vision, a shoulder girdle allowing a large degree of movement in the shoulder joint, and dextrous hands. Primates range in size from Madame Berthe's mouse lemur, which weighs , to the eastern gorilla, weighing over . There are 376–524 species of living primates, depending on which classification is used. New primate species continue to be discovered: over 25 species were described in the 2000s, 36 in the 2010s, and three in the 2020s. Primates have large bra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Equidae
Equidae (sometimes known as the horse family) is the taxonomic family of horses and related animals, including the extant horses, asses, and zebras, and many other species known only from fossils. All extant species are in the genus '' Equus'', which originated in North America. Equidae belongs to the order Perissodactyla, which includes the extant tapirs and rhinoceros, and several extinct families. The term equid refers to any member of this family, including any equine. Evolution The oldest known fossils assigned to Equidae were found in North America, and date from the early Eocene epoch, 54 million years ago. They were once assigned to the genus ''Hyracotherium'', but the type species of that genus is now regarded as a palaeothere. The other species have been split off into different genera. These early equids were fox-sized animals with three toes on the hind feet, and four on the front feet. They were herbivorous browsers on relatively soft plants, and already adapte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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