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Panthera Tigris Acutidens
''Panthera tigris acutidens'' or Wanhsien tiger is an extinct tiger subspecies, which was scientifically described in 1928 based on fossils excavated near Wanhsien in southern China's Sichuan Province. Otto Zdansky named it ''Felis acutidens''. After the fossils were re-examined in 1947, they were attributed to ''Panthera tigris acutidens'' by Dirk Albert Hooijer and Walter W. Granger. Description The ''P. t. acutidens'' fossils from Wanhsien in the collection of the American Museum of Natural History consist of two skulls, a humerus, two metacarpals, a tibia, an astragalus, two calcanea, and five metatarsals, and several parts of jaws. The tibia is long and in diameter. The humerus is long and slightly smaller in width, length and diameter than humeri of Siberian tiger. It would have weighed in body mass. See also * Bornean tiger * ''Panthera tigris soloensis'' * ''Panthera tigris trinilensis'' * ''Panthera zdanskyi ''Panthera zdanskyi'', also known as the Longdan tig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pliocene
The Pliocene ( ; also Pleiocene) is the epoch in the geologic time scale that extends from 5.333 million to 2.58See the 2014 version of the ICS geologic time scale million years ago. It is the second and most recent epoch of the Neogene Period in the . The Pliocene follows the Epoch and is followed by the Epoch. Prior to the 2009 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Humerus
The humerus (; ) is a long bone in the arm that runs from the shoulder to the elbow. It connects the scapula and the two bones of the lower arm, the radius and ulna, and consists of three sections. The humeral upper extremity consists of a rounded head, a narrow neck, and two short processes (tubercles, sometimes called tuberosities). The body is cylindrical in its upper portion, and more prismatic below. The lower extremity consists of 2 epicondyles, 2 processes (trochlea & capitulum), and 3 fossae (radial fossa, coronoid fossa, and olecranon fossa). As well as its true anatomical neck, the constriction below the greater and lesser tubercles of the humerus is referred to as its surgical neck due to its tendency to fracture, thus often becoming the focus of surgeons. Etymology The word "humerus" is derived from la, humerus, umerus meaning upper arm, shoulder, and is linguistically related to Gothic ''ams'' shoulder and Greek ''ōmos''. Structure Upper extremity The upper or pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prehistoric Pantherines
Prehistory, also known as pre-literary history, is the period of human history between the use of the first stone tools by hominins 3.3 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 5000 years ago. It took thousands of years for writing systems to be widely adopted, with writing spreading to almost all cultures by the 19th century. The end of prehistory therefore came at very different times in different places, and the term is less often used in discussing societies where prehistory ended relatively recently. In the early Bronze Age, Sumer in Mesopotamia, the Indus Valley Civilisation, and ancient Egypt were the first civilizations to develop their own scripts and to keep historical records, with their neighbors following. Most other civilizations reached the end of prehistory during the following Iron Age. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tigers
The tiger (''Panthera tigris'') is the largest living cat species and a member of the genus ''Panthera''. It is most recognisable for its dark vertical stripes on orange fur with a white underside. An apex predator, it primarily preys on ungulates, such as deer and wild boar. It is territorial and generally a solitary but social predator, requiring large contiguous areas of habitat to support its requirements for prey and rearing of its offspring. Tiger cubs stay with their mother for about two years and then become independent, leaving their mother's home range to establish their own. The tiger was first scientifically described in 1758. It once ranged widely from the Eastern Anatolia Region in the west to the Amur River basin in the east, and in the south from the foothills of the Himalayas to Bali in the Sunda Islands. Since the early 20th century, tiger populations have lost at least 93% of their historic range and have been extirpated from Western and Central Asia, th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Panthera Zdanskyi
''Panthera zdanskyi'', also known as the Longdan tiger, is an extinct pantherine species that is seen as a close relative of the modern tiger. Fossils were excavated in northwestern China's Gansu province. Etymology ''Panthera zdanskyi'' was first named by Ji H. Mazák, Per Christiansen and Andrew C. Kitchener in 2011. The specific name honors the Austrian paleontologist Otto A. Zdansky for his contributions to the understanding of Neogene Chinese fossil carnivorans. Description The holotype of ''Panthera zdanskyi'' consists of a nearly complete skull and mandible stored at the Babiarz Institute of Paleontological Studies. It is the oldest known complete pantherine skull ever found, and indicates that the animal was about the size of a jaguar. The paratype comprises a rostrum, premaxilla and maxilla and much of the dentition, originally referred to ''Panthera palaeosinensis''. It was collected in 2004 in the east slope of Longdan, south of Dongxiang Autonomous County in the L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Panthera Tigris Trinilensis
''Panthera tigris trinilensis'', known as the Trinil tiger, is an extinct tiger subspecies dating from about 1.2 million years ago that was found at the locality of Trinil, Java, Indonesia. The fossil remains are now stored in the Dubois Collection of the National Museum of Natural History in Leiden, the Netherlands. Although these fossils have been found on Java, the Trinil tiger is probably not a direct ancestor of the Javan tiger. The Trinil tiger probably became extinct 50,000 years ago. The Bali tiger was also not closely related to the Trinil because of their time differences. It lived in Indonesia, particularly in Java and Trinil, and according to some zoologists, it could be the ancestor of all known Indonesian subspecies. Perhaps, East Asia was a center of the origin of Pantherinae. The oldest tiger fossils found in Early Pleistocene Java show that about two million years ago, tigers were already quite common in East Asia. However, the glacial and interglacial climatic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Panthera Tigris Soloensis
''Panthera tigris soloensis'', known as the Ngandong tiger, is an extinct subspecies of the modern tiger species. It inhabited the Sundaland region of Indonesia during the Pleistocene epoch. Discoveries Fossils of the Ngandong tiger were excavated primarily near the village of Ngandong, hence the common name. Only seven fossils are known, making study of the animal difficult. Description The few remains of the Ngandong tiger suggest that it would have been about the size of a modern Bengal tiger. However, given the size of other remains, it may have been larger than a modern tiger. A large male could have weighed up to , in which case, it would have been heavier than the largest extant tiger subspecies, and similar in size to ''Panthera atrox'' (which could have weighed up to 420 kg), rendering it among the largest felids known to have ever lived. Paleoecology In addition to the remains of the Ngandong tiger, many other fossils from the same era have been discovered in N ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bornean Tiger
The Bornean tiger or Borneo tiger is possibly an extinct tiger population that lived on the island of Borneo in prehistoric times. A live Bornean tiger has not been conclusively recorded, but the indigenous Dayak people believe in its existence, and occasionally report sightings. Characteristics It has been assumed that the Bornean tiger might have been rather small in size, similar to the Sumatran tiger. According to the native people, it is bigger than a Bornean clouded leopard, and largely brown in colour with faint stripes. In Malaysia's Sarawak, about 750,000 animal bone fragments were excavated in Niah National Park between 1954 and 1966. A metacarpal bone fragment measuring more than was identified as being of a young tiger. Two fossil bone fragments excavated at the Ille Cave on the island of Palawan in the Philippines were identified as being of a tiger. One fragment is a full basal phalanx bone of the second digit of the left manus measuring ; the other is the di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siberian Tiger
The Siberian tiger or Amur tiger is a population of the tiger subspecies ''Panthera tigris tigris'' native to the Russian Far East, Northeast China and possibly North Korea. It once ranged throughout the Korean Peninsula, but currently inhabits mainly the Sikhote-Alin mountain region in southwest Primorye Province in the Russian Far East. In 2005, there were 331–393 adult and subadult Siberian tigers in this region, with a breeding adult population of about 250 individuals. The population had been stable for more than a decade because of intensive conservation efforts, but partial surveys conducted after 2005 indicate that the Russian tiger population was declining. An initial census held in 2015 indicated that the Siberian tiger population had increased to 480–540 individuals in the Russian Far East, including 100 cubs. This was followed up by a more detailed census which revealed there was a total population of 562 wild Siberian tigers in Russia. As of 2014, about 35 in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metatarsal
The metatarsal bones, or metatarsus, are a group of five long bones in the foot, located between the tarsal bones of the hind- and mid-foot and the phalanges of the toes. Lacking individual names, the metatarsal bones are numbered from the medial side (the side of the great toe): the first, second, third, fourth, and fifth metatarsal (often depicted with Roman numerals). The metatarsals are analogous to the metacarpal bones of the hand. The lengths of the metatarsal bones in humans are, in descending order, second, third, fourth, fifth, and first. Structure The five metatarsals are dorsal convex long bones consisting of a shaft or body, a base (proximally), and a head (distally).Platzer 2004, p. 220 The body is prismoid in form, tapers gradually from the tarsal to the phalangeal extremity, and is curved longitudinally, so as to be concave below, slightly convex above. The base or posterior extremity is wedge-shaped, articulating proximally with the tarsal bones, and by it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calcaneus
In humans and many other primates, the calcaneus (; from the Latin ''calcaneus'' or ''calcaneum'', meaning heel) or heel bone is a bone of the tarsus of the foot which constitutes the heel. In some other animals, it is the point of the hock. Structure In humans, the calcaneus is the largest of the tarsal bones and the largest bone of the foot. Its long axis is pointed forwards and laterally. The talus bone, calcaneus, and navicular bone are considered the proximal row of tarsal bones. In the calcaneus, several important structures can be distinguished:Platzer (2004), p 216 There is a large calcaneal tuberosity located posteriorly on plantar surface with medial and lateral tubercles on its surface. Besides, there is another peroneal tubecle on its lateral surface. On its lower edge on either side are its lateral and medial processes (serving as the origins of the abductor hallucis and abductor digiti minimi). The Achilles tendon is inserted into a roughened area on its superio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Os Trigonum
An accessory bone or supernumerary bone is a bone that is not normally present in the body, but can be found as a variant in a significant number of people. It poses a risk of being misdiagnosed as bone fractures on radiography. Wrist and hand Os ulnostyloideum The ''os ulnostyloideum'' is an ulnar styloid process that is not fused to the rest of the ulna bone.R. O'Rahilly. ''A survey of carpal and tarsal anomalies.'' J Bone Joint Surg Am. 1953; 35: 626–642 On X-rays, an ''os ulnostyloideum'' is sometimes mistaken for an avulsion fracture of the styloid process. However, the distinction between these is extremely difficult.T.E. Keats, M.W. Anderson. ''Atlas of normal roentgen variants that may simulate disease''. 7th edition, Mosby Inc. 2001 It is alleged that the os ulnostyloideum has a close relationship with or is synonymous with the os triquetrum secundarium. Os centrale The ''os carpi centrale'' (also briefly ''os centrale'') is, where present, located on the dor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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