T. atrox T. lentis The Miocene epoch is a period of time that extends from about 23 to 5. ... The Pleistocene epoch (IPA: ) is part of the geologic timescale. ... Image File history File linksMetadata Download high-resolution version (602x797, 777 KB) My reconstruction of the carnivorous South American marsupial, Thylacosmilus atrox, shown here attacking an unidentified liptotern. ... The conservation status of a species is an indicator of the likelihood of that species continuing to survive either in the present day or the future. ... An ammonite fossil Eocene fossil fish of the genus Knightia Petrified wood fossil formed through permineralization. ... Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms. ... Phyla Subregnum Parazoa Porifera Subregnum Eumetazoa Placozoa Orthonectida Rhombozoa Radiata (unranked) Ctenophora Cnidaria Bilateria (unranked) Acoelomorpha Myxozoa Superphylum Deuterostomia Chordata Hemichordata Echinodermata Chaetognatha Xenoturbellida Superphylum Ecdysozoa Kinorhyncha Loricifera Priapulida Nematoda Nematomorpha Onychophora Tardigrada Arthropoda Superphylum Platyzoa Platyhelminthes Gastrotricha Rotifera Acanthocephala Gnathostomulida Micrognathozoa Cycliophora Superphylum Lophotrochozoa Sipuncula Nemertea Phoronida Ectoprocta Bryozoa... {{{subdivision_ranks}}} See below Chordates (phylum Chordata) are a group of animals that includes the vertebrates, together with several closely related invertebrates. ... Orders Multituberculata (extinct) Volaticotheria (extinct) Palaeoryctoides (extinct) Triconodonta (extinct) Subclass Australosphenida Ausktribosphenida Monotremata Subclass Eutheria (excludes extinct ancestors) Afrosoricida Anagaloidea (extinct) Arctostylopida (extinct) Artiodactyla Carnivora Cetacea Chiroptera Cimolesta (extinct) Cingulata Creodonta (extinct) Condylarthra (extinct) Dermoptera Desmostylia (extinct) Dinocerata (extinct) Embrithopoda (extinct) Hyracoidea Insectivora Lagomorpha Leptictida (extinct) Litopterna (extinct) Macroscelidea Mesonychia... Orders Didelphimorphia Paucituberculata Microbiotheria Dasyuromorphia Peramelemorphia Notoryctemorphia Diprotodontia Marsupials are mammals in which the female typically has a pouch (called the marsupium, from which the name Marsupial derives) in which it rears its young through early infancy. ... Sparassodonta, a zoological name applied to a group of primitive carnivorous mammals from the Santa Crux beds of Patagonia, represented by the genera Borhyaena, Prothylacinus, Amphiproviverra, etc. ... 1933 (MCMXXXIII) was a common year starting on Sunday (link will take you to calendar). ...
Thylacosmilus was a saber-toothed marsupial predator that first appeared during the Miocene. It was not a relative of the true saber-tooth cat, but rather a prime example of convergent evolution. It was equipped with large teeth and powerful shoulders, both of which allowed it to dismantle its prey. Remains of the animal have been found in parts of South America. Thylacosmilus' sabre-teeth kept growing throughout its life, unlike the sabres of true saber-tooths. It also had a pair of scabbard-like structures that developed from flanges growing from the lower jaw, designed to protect the sabre-teeth when it closed its mouth. Orders Didelphimorphia Paucituberculata Microbiotheria Dasyuromorphia Peramelemorphia Notoryctemorphia Diprotodontia Marsupials are mammals in which the female typically has a pouch (called the marsupium, from which the name Marsupial derives) in which it rears its young through early infancy. ... The Miocene epoch is a period of time that extends from about 23 to 5. ... The term saber-toothed cat describes numerous cat-like species that lived during various parts of the Cenozoic and evolved their saber-toothed characteristics entirely independently. ... It has been suggested that Morphological convergence be merged into this article or section. ... South America South America is a continent crossed by the equator, with most of its area in the Southern Hemisphere. ... A scabbard is a sheath for holding a sword. ...
It became extinct during the early Pleistocene as a result of the Great American Interchange, being outcompeted by true saber-tooth cats such as Smilodon. The Pleistocene epoch (IPA: ) is part of the geologic timescale. ... The Great American Interchange was a very important paleozoogeographic event in which land and freshwater animal faunas migrated from Central America to South America and vice versa, as the volcanic Isthmus of Panama rose up from the sea floor and bridged the continents. ... Species Smilodon californicus Smilodon fatalis Smilodon gracilis Smilodon populator Smilodon floridus Smilodon neogaeus Smilodon SMILE-o-don (a bahuvrihi from Greek: σμιλη knife and (Ionic) οδων tooth) is an extinct genus of large machairodontine saber-toothed cats that are understood to have lived between approximately 3 million to 10,000 years ago...
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Thylacosmilus (marsupial sabre-tooth)
Art by Maximo Salas
Skull of Thylacosmilus
Comparison of Thylacosmilus (upper) and Smilodon (below)
The Thylacosmilus ('pouch-knife') and its prey lived and thrived during the late Miocene and early Pliocene and are believed to have succumbed to extinction around 2 million years ago.
Thylacosmilus and related species are believed to have evolved into hunters from primitive marsupial insectivores that became isolated when South America drifted away from the rest of the continents.
Thylacosmilus and their type are collectively known as borhyaenids ['meat/food-hyaenids']: the lions, tigers, and bears of their time.
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