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Ekaltadeta
''Ekaltadeta'' is an extinct genus of marsupials related to the modern musky rat-kangaroos. ''Ekaltadelta'' was present in what is today the Riversleigh formations in Northern Queensland from the Late Oligocene to the Miocene. They are hypothesized to have been either exclusively carnivorous, or omnivorous with a fondness for meat, based on their chewing teeth. This conclusion is based mainly on the size and shape of a large buzz-saw-shaped cheek-tooth, the adult third premolar, which is common to all ''Ekaltadeta''. A few specimens actually did also have long predatory "fangs". Fossils of the animals include two near complete skulls, and numerous upper and lower jaws. Taxonomy The description of a new species and genus was published by Mike Archer and Tim Flannery in 1985. The type species is '' Ekaltadeta ima''. It was originally put within the family of Potoroidae, but like the musky rat-kangaroo, the genus was moved to the family Hypsiprymnodontidae. The name ''Ekaltadet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ekaltadeta Wellingtonensis
''Ekaltadeta'' is an extinct genus of marsupials related to the modern musky rat-kangaroos. ''Ekaltadelta'' was present in what is today the Riversleigh formations in Northern Queensland from the Late Oligocene to the Miocene. They are hypothesized to have been either exclusively carnivorous, or omnivorous with a fondness for meat, based on their chewing teeth. This conclusion is based mainly on the size and shape of a large buzz-saw-shaped cheek-tooth, the adult third premolar, which is common to all ''Ekaltadeta''. A few specimens actually did also have long predatory "fangs". Fossils of the animals include two near complete skulls, and numerous upper and lower jaws. Taxonomy The description of a new species and genus was published by Mike Archer and Tim Flannery in 1985. The type species is '' Ekaltadeta ima''. It was originally put within the family of Potoroidae, but like the musky rat-kangaroo, the genus was moved to the family Hypsiprymnodontidae. The name ''Ekaltadet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ekaltadeta Ima
''Ekaltadeta ima'' is a species of potoroid marsupial that existed in Miocene Australia. Taxonomy The description of ''Ekaltadeta ima'' was assigned to a new genus ''Ekaltadeta'' as the type species in a study of fossil specimens published by Mike Archer and Tim Flannery in 1985. The specific diagnosis of the type and genus was revised in a 1996 study by Stephen Wroe of propleonine taxa, when new fossil specimens allowed comparison with the type material and provided direct evidence of other characteristics. A largely complete skull of ''E. ima'' was described by Wroe in 1998 , prompting another reinvestigation of the propleonine clade which the author had suggested contained paraphyletic and polyphyletic species. The name ''Ekaltadeta'' is derived from two words in an indigenous language associated with the McDonnell Ranges, combining the words for powerful, ''ekalta'', and ''eta'' to describe the "powerful tooth". The specific epithet ''ima'' means "condemned to die" in the la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ekaltadeta Jamiemulvaneyi
''Ekaltadeta jamiemulvaneyi'' is a species of potoroid marsupial that existed in later periods of Miocene Australia. Taxonomy The description of ''Ekaltadeta jamiemulvaneyi'' was assigned to a new genus ''Ekaltadeta'' by Stephen Wroe in 1996, assigning it to the genus erected for another species. The author reviewed the phylogeny of ''Ekaltadeta'' and gave a revised description of the genus. The specific epithet ''jamiemulvaneyi'' refers to an honour given to J. Mulvaney as a supporter of the Riversleigh Society. The generic name means "powerful tooth". Description ''Ekaltadeta jamiemulveneyi'' describes a very large species of the propleopine group. Distribution A species of Riversleigh fauna, only known from that area in the north of Queensland. The specimens used in the first description were obtained at two sites in the Riversleigh World Heritage Area, the "Encore" and "Cleft of Ages" sites. The sites of deposition are dated to period toward the end of the Middle or th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypsiprymnodontidae
The Hypsiprymnodontidae are a family of macropods, one of two families containing animals commonly referred to as rat-kangaroos. The single known extant genus and species in this family, the musky rat-kangaroo, ''Hypsiprymnodon moschatus'', occurs in northern Australia. During the Pleistocene, this family included the megafauna genus ''Propleopus''. Classification * Family Hypsiprymnodontidae ** Subfamily Hypsiprymnodontinae *** Genus ''Hypsiprymnodon'' ****''Hypsiprymnodon moschatus'', musky rat-kangaroo ****†''Hypsiprymnodon bartholomaii'' ****†''Hypsiprymnodon philcreaseri'' ****†''Hypsiprymnodon dennisi'' ****†''Hypsiprymnodon karenblackae'' ** Subfamily † Propleopinae Archer and Flannery, 1985 *** Genus †''Ekaltadeta'' ****†'' Ekaltadeta ima'' ****†'' Ekaltadeta jamiemulveneyi'' *** Genus †''Propleopus'' ****†''Propleopus oscillans'' ****†''Propleopus chillagoensis ''Propleopus chillagoensis'' is an extinct species of marsupial, of the genus ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Riversleigh Fauna
Riversleigh fauna is the collective term for any species of animal identified in fossil sites located in the Riversleigh World Heritage Area. Faunal zones The presence of the Riversleigh in the Oligo-Miocene has been exceptionally well preserved throughout a number of time periods. These has been classified by four "faunal zones", and may be summarised as, * Faunal Zone A (FZA): late Oligocene, a period 23.03–28.4 million years before present * Faunal Zone B (FZB): early Miocene, 15.97-23.03 myr * Faunal Zone C (FZC): middle Miocene, 11.608-15.97 myr * Faunal Zone D (FZD): late Miocene, 5.332-11.608 myr More recent fossil specimens has also been coded to the period of deposition, * Pliocene (PLIO), a period 2.588-5.332 myr * Pleistocene (PLEIS), 0.0117-2.588 myr * Holocene, noted as (HOLO) to indicate the period dated as following the Pleistocene, from the present day to 11,700 years ago. Faunal lists The following are incomplete lists of mammals, birds, fish, and invertebr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Musky Rat-kangaroo
The musky rat-kangaroo (''Hypsiprymnodon moschatus'') is a small marsupial found only in the rainforests of northeastern Australia. First described in the later 19th century, the only other species are known from fossil specimens. They are similar in appearance to potoroos and bettongs, but are not as closely related. Their omnivorous diet is known to include materials such as fruit and fungi, as well as small animals such as insects and other invertebrates. The local Aboriginal name for the species is durrgim yuri''.'' Taxonomy The description of this species, assigned to a new genus ''Hypsiprymnodon'', was published in 1876 by Edward Pierson Ramsay, a curator at the Australian Museum. The syntypes are part of the museum's collection, mounted specimens of a male and female collected at Rockingham Bay, Queensland. Ramsay's specimens were obtained during European settlement of northeastern Australia on an expedition toward the Herbert River. A description of the species was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oligocene Marsupials
The Oligocene ( ) is a geologic epoch of the Paleogene Period and extends from about 33.9 million to 23 million years before the present ( to ). As with other older geologic periods, the rock beds that define the epoch are well identified but the exact dates of the start and end of the epoch are slightly uncertain. The name Oligocene was coined in 1854 by the German paleontologist Heinrich Ernst Beyrich from his studies of marine beds in Belgium and Germany. The name comes from the Ancient Greek (''olígos'', "few") and (''kainós'', "new"), and refers to the sparsity of extant forms of molluscs. The Oligocene is preceded by the Eocene Epoch and is followed by the Miocene Epoch. The Oligocene is the third and final epoch of the Paleogene Period. The Oligocene is often considered an important time of transition, a link between the archaic world of the tropical Eocene and the more modern ecosystems of the Miocene. Major changes during the Oligocene included a global expansion of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pleistocene Mammals Of Australia
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] |
Miocene Marsupials
The Miocene ( ) is the first geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recent" because it has 18% fewer modern marine invertebrates than the Pliocene has. The Miocene is preceded by the Oligocene and is followed by the Pliocene. As Earth went from the Oligocene through the Miocene and into the Pliocene, the climate slowly cooled towards a series of ice ages. The Miocene boundaries are not marked by a single distinct global event but consist rather of regionally defined boundaries between the warmer Oligocene and the cooler Pliocene Epoch. During the Early Miocene, the Arabian Peninsula collided with Eurasia, severing the connection between the Mediterranean and Indian Ocean, and allowing a faunal interchange to occur between Eurasia and Africa, including the dispersal of proboscideans into Eurasia. During the late ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Miocene Mammals Of Australia
The Miocene ( ) is the first geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recent" because it has 18% fewer modern marine invertebrates than the Pliocene has. The Miocene is preceded by the Oligocene and is followed by the Pliocene. As Earth went from the Oligocene through the Miocene and into the Pliocene, the climate slowly cooled towards a series of ice ages. The Miocene boundaries are not marked by a single distinct global event but consist rather of regionally defined boundaries between the warmer Oligocene and the cooler Pliocene Epoch. During the Early Miocene, the Arabian Peninsula collided with Eurasia, severing the connection between the Mediterranean and Indian Ocean, and allowing a faunal interchange to occur between Eurasia and Africa, including the dispersal of proboscideans into Eurasia. During the late ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oligocene Mammals Of Australia
The Oligocene ( ) is a geologic epoch of the Paleogene Period and extends from about 33.9 million to 23 million years before the present ( to ). As with other older geologic periods, the rock beds that define the epoch are well identified but the exact dates of the start and end of the epoch are slightly uncertain. The name Oligocene was coined in 1854 by the German paleontologist Heinrich Ernst Beyrich from his studies of marine beds in Belgium and Germany. The name comes from the Ancient Greek (''olígos'', "few") and (''kainós'', "new"), and refers to the sparsity of extant forms of molluscs. The Oligocene is preceded by the Eocene Epoch and is followed by the Miocene Epoch. The Oligocene is the third and final epoch of the Paleogene Period. The Oligocene is often considered an important time of transition, a link between the archaic world of the tropical Eocene and the more modern ecosystems of the Miocene. Major changes during the Oligocene included a global expansion of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prehistoric Macropods
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] |
