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Xenosmilus
''Xenosmilus hodsonae'' (from Greek, , ''xenos'', "strange" + , ''smilē'', " chisel" ) is an extinct species of the Machairodontinae, or saber-toothed cats. Description The species name ''hodsonae'' originates from Debra Hodson, the wife of a researcher. Two fairly intact specimens were found by amateur fossil hunters in 1983 (1981 by some sources) in the Haile limestone mines in Alachua County, Florida. In 1994, the fossils were examined, and it was decided that the cats were of an entirely new genus. The fossils were of Irvingtonian age (1.8 to 0.3 Ma). Because the skeletons were found beside each other, some suspect ''Xenosmilus'' was a social mammal. Found alongside the two skeletons were dozens of peccary bones. It seems likely, with their muscular builds, that ''X. hodsonae'' preyed upon peccaries. Physically, the cat reached around long with a highly muscular body and weighed around , making it similar in size to the fellow machairodonts '' Machairodus horribili ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xenosmilus With Concealed Canine
''Xenosmilus hodsonae'' (from Greek, , ''xenos'', "strange" + , ''smilē'', " chisel" ) is an extinct species of the Machairodontinae, or saber-toothed cats. Description The species name ''hodsonae'' originates from Debra Hodson, the wife of a researcher. Two fairly intact specimens were found by amateur fossil hunters in 1983 (1981 by some sources) in the Haile limestone mines in Alachua County, Florida. In 1994, the fossils were examined, and it was decided that the cats were of an entirely new genus. The fossils were of Irvingtonian age (1.8 to 0.3 Ma). Because the skeletons were found beside each other, some suspect ''Xenosmilus'' was a social mammal. Found alongside the two skeletons were dozens of peccary bones. It seems likely, with their muscular builds, that ''X. hodsonae'' preyed upon peccaries. Physically, the cat reached around long with a highly muscular body and weighed around , making it similar in size to the fellow machairodonts '' Machairodus horribili ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Machairodontinae
Machairodontinae is an extinct subfamily of carnivoran mammals of the family Felidae (true cats). They were found in Asia, Africa, North America, South America, and Europe from the Miocene to the Pleistocene, living from about 16 million until about 11,000 years ago. The Machairodontinae contain many of the extinct predators commonly known as "saber-toothed cats", including the famed genus '' Smilodon'', as well as other cats with only minor increases in the size and length of their maxillary canines. The name means "dagger-tooth", from Greek μάχαιρα (''machaira''), sword. Sometimes, other carnivorous mammals with elongated teeth are also called saber-toothed cats, although they do not belong to the felids. Besides the machairodonts, other saber-toothed predators also arose in the nimravids, barbourofelids, machaeroidines, hyaenodonts and even in two groups of metatherians (the thylacosmilid sparassodonts and the deltatheroideans). Evolution Family Felidae The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saber-toothed Cat
Machairodontinae is an extinct subfamily of carnivoran mammals of the family Felidae (true cats). They were found in Asia, Africa, North America, South America, and Europe from the Miocene to the Pleistocene, living from about 16 million until about 11,000 years ago. The Machairodontinae contain many of the extinct predators commonly known as "saber-toothed cats", including the famed genus ''Smilodon'', as well as other cats with only minor increases in the size and length of their maxillary canines. The name means "dagger-tooth", from Greek μάχαιρα (''machaira''), sword. Sometimes, other carnivorous mammals with elongated teeth are also called saber-toothed cats, although they do not belong to the felids. Besides the machairodonts, other saber-toothed predators also arose in the nimravids, barbourofelids, machaeroidines, hyaenodonts and even in two groups of metatherians (the thylacosmilid sparassodonts and the deltatheroideans). Evolution Family Felidae ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Homotherini
Homotherini is an extinct tribe (or subtribe) of carnivoran mammals of the family Felidae (true cats). The tribe is commonly known as scimitar-toothed cats. These saber-toothed cats were distributed en North America, Europe, Asia, Africa, and South America from the Miocene to Pleistocene living from c. 23 Ma until c. 12,000 years ago. Description Compared to the usually massively built dirk-toothed phenotype, apparent in ''Smilodon'', '' Megantereon'' and the feliform ''Barbourofelis'' (just to list a few), their upper canines were smaller than those of equally sized cats of that phenotype, but they had serrated edges. The scimitar-toothed phenotype has also evolved independently in other mammal families. Evolution Based on mitochondrial DNA sequences extracted from fossils, the lineage of ''Homotherium ''Homotherium'', also known as the scimitar-toothed cat or scimitar cat, is an extinct genus of machairodontine saber-toothed predator, often termed scimitar-toothed cat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Smilodon Populator
''Smilodon'' is a genus of the extinct machairodont subfamily of the felids. It is one of the most famous prehistoric mammals and the best known saber-toothed cat. Although commonly known as the saber-toothed tiger, it was not closely related to the tiger or other modern cats. ''Smilodon'' lived in the Americas during the Pleistocene epoch (2.5 mya – 10,000 years ago). The genus was named in 1842 based on fossils from Brazil; the generic name means "scalpel" or "two-edged knife" combined with "tooth". Three species are recognized today: ''S. gracilis'', ''S. fatalis'', and ''S. populator''. The two latter species were probably descended from ''S. gracilis'', which itself probably evolved from ''Megantereon''. The hundreds of individuals obtained from the La Brea Tar Pits in Los Angeles constitute the largest collection of ''Smilodon'' fossils. Overall, ''Smilodon'' was more robustly built than any extant cat, with particularly well-developed forelimbs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taowu Liui
''Taowu'' is an extinct genus of machairodonts, a type of saber-toothed cat. It lived during the Early Pleistocene about 2.5 million years ago in East Asia. So far, only one skull is known, found in northern China. Based on this, a relatively small representative of the saber-toothed cats can be reconstructed, which only reached the size of a present-day leopard. In its dentition characteristics, it mediates between phylogenetic older forms such as ''Amphimachairodus'' and younger members such as ''Homotherium''. The genus was scientifically described in 2022, but the find material was recovered as early as the 1930s. Description ''Taowu'' was a rather small representative of the saber-toothed cats. It reached about the size of a present-day leopards. Found so far is a nearly complete skull of 23.5 cm length and 13.4 cm width, measured across the zygomatic arches. Only the articular surface on the occipital bone is missing from this one. In top view, the skull w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adeilosmilus
''Amphimachairodus'' is an extinct genus of large machairodonts. It is also a member of the tribe Homotherini within Machairodontinae and is most closely related to such species as ''Xenosmilus'', ''Homotherium'' itself, and ''Nimravides''. It inhabited Eurasia, Northern Africa and North America during the late Miocene epoch. Description There was marked sexual dimorphism in ''A. giganteus'', with males being much larger than females. The species ''Amphimachairodus coloradensis'', from the United States (formerly ''Machairodus coloradensis'') was a significantly large animal, about at the shoulder, according to skeletal and life reconstructions, potentially making it one of the largest known felids. All ''Amphimachairodus'' species have a developed mandibular flange, however, ''A. colaradensis'' is distinguishable from ''A. giganteus'' and ''A. kurteni'' by subtle differences in the shape of the mandible and placement of lower carnassials. In size and proportions, the Euras ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Machairodontini
Machairodontini is an extinct tribe of large saber-toothed cats of the subfamily Machairodontinae, that lived in Europe, Asia, Africa, and North America, during the Middle and Late Miocene. Description Machairodont means "knife-tooth" which perfectly describes the species that make up Machairodontini. These predators are related to extant cats, the Felinae, and share a common ancestor within the Felidae clade. Machairodontines were medium to large sized saber-toothed cats that would have reached a size rivaling today's lions, which can reach weights of over . This clade is also occasionally classified as being part of the Homotherini, and includes genera such as ''Machairodus'', Hemimachairodus and '' Miomachairodus''. They were first characterized by their scimitar canines in the upper jaw. This means that the canines are shorter and coarsely serrated, with vertical flattening.Antón, Mauricio. 2013. Machairodont adaptations and affinities of the Holarctic late Miocene homother ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Felidae
Felidae () is the family of mammals in the order Carnivora colloquially referred to as cats, and constitutes a clade. A member of this family is also called a felid (). The term "cat" refers both to felids in general and specifically to the domestic cat ('' Felis catus''). Felidae species exhibit the most diverse fur pattern of all terrestrial carnivores. Cats have retractile claws, slender muscular bodies and strong flexible forelimbs. Their teeth and facial muscles allow for a powerful bite. They are all obligate carnivores, and most are solitary predators ambushing or stalking their prey. Wild cats occur in Africa, Europe, Asia and the Americas. Some wild cat species are adapted to forest habitats, some to arid environments, and a few also to wetlands and mountainous terrain. Their activity patterns range from nocturnal and crepuscular to diurnal, depending on their preferred prey species. Reginald Innes Pocock divided the extant Felidae into three subfamilies: the Pant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pleistocene
The Pleistocene ( , often referred to as the ''Ice age'') is the geological epoch that lasted from about 2,580,000 to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was finally confirmed in 2009 by the International Union of Geological Sciences, the cutoff of the Pleistocene and the preceding Pliocene was regarded as being 1.806 million years Before Present (BP). Publications from earlier years may use either definition of the period. The end of the Pleistocene corresponds with the end of the last glacial period and also with the end of the Paleolithic age used in archaeology. The name is a combination of Ancient Greek grc, label=none, πλεῖστος, pleīstos, most and grc, label=none, καινός, kainós (latinized as ), 'new'. At the end of the preceding Pliocene, the previously isolated North and South American continents were joined by the Isthmus of Panama, causing a faunal interchange between the two reg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Smilodontini
Smilodontini is an extinct tribe within the Machairodontinae or "saber-toothed cat" subfamily of the Felidae. The tribe is also known as the "dirk-toothed cats". They were endemic to South America, North America, Europe, Asia, and Africa during the Miocene to Pleistocene, from 10.3 mya—11,000 years ago, existing for approximately . As the name suggests, the famous genus of ''Smilodon'' is part of this group, but there are also three other distinct genera in Smilodontini. The earliest known genus of the tribe is '' Promegantereon'', once thought to be a species of '' Paramachairodus''. The tribe only became extinct 10,000 years ago, with the demise of ''Smilodon''. All of these are saber-toothed cats, meaning that they have long, narrow upper canines and stocky, well muscled proportions. Description The various members of Smilodontini are generally distinguished by their long, narrow upper canines. However, the stockiness often seen as one of the tribe's signature features var ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canine Tooth
In mammalian oral anatomy, the canine teeth, also called cuspids, dog teeth, or (in the context of the upper jaw) fangs, eye teeth, vampire teeth, or vampire fangs, are the relatively long, pointed teeth. They can appear more flattened however, causing them to resemble incisors and leading them to be called ''incisiform''. They developed and are used primarily for firmly holding food in order to tear it apart, and occasionally as weapons. They are often the largest teeth in a mammal's mouth. Individuals of most species that develop them normally have four, two in the upper jaw and two in the lower, separated within each jaw by incisors; humans and dogs are examples. In most species, canines are the anterior-most teeth in the maxillary bone. The four canines in humans are the two maxillary canines and the two mandibular canines. Details There are generally four canine teeth: two in the upper (maxillary) and two in the lower (mandibular) arch. A canine is placed laterall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
