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Mekosuchus
''Mekosuchus'' is a genus of extinct Australasian mekosuchine crocodilian. Species of ''Mekosuchus'' were generally small-sized (less than long), terrestrial animals with short, blunt-snouted heads and strong limbs. Four species are currently recognized, ''M. inexpectatus'', ''M. whitehunterensis'', ''M. sanderi'' and ''M. kalpokasi'', all known primarily from fragmentary remains. ''Mekosuchus'' was a successful and widespread genus, with its earliest members being found during the Oligocene and Miocene in mainland Australia. These species coexisted with a wide variety of other mekosuchines, forming a highly diverse crocodilian fauna including terrestrial hunters, semi-aquatic ambush predators and long-snouted fish eaters. The anatomy of the neck vertebrae of ''M. whitehunterensis'' might indicate that it was quite well adapted to stripping flesh from carcasses, using blade-like teeth and violent side-to-side thrashing. The younger two species were found on the Pacific islands ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mekosuchus Australia
''Mekosuchus'' is a genus of extinct Australasian mekosuchine crocodilian. Species of ''Mekosuchus'' were generally small-sized (less than long), terrestrial animals with short, blunt-snouted heads and strong limbs. Four species are currently recognized, ''M. inexpectatus'', ''M. whitehunterensis'', ''M. sanderi'' and ''M. kalpokasi'', all known primarily from fragmentary remains. ''Mekosuchus'' was a successful and widespread genus, with its earliest members being found during the Oligocene and Miocene in mainland Australia. These species coexisted with a wide variety of other mekosuchines, forming a highly diverse crocodilian fauna including terrestrial hunters, semi-aquatic ambush predators and long-snouted fish eaters. The anatomy of the neck vertebrae of ''M. whitehunterensis'' might indicate that it was quite well adapted to stripping flesh from carcasses, using blade-like teeth and violent side-to-side thrashing. The younger two species were found on the Pacific islands ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mekosuchinae
Mekosuchinae is an extinct clade of crocodilians from the Cenozoic of Australasia. They represented the dominant group of crocodilians in the region during most of the Cenozoic, first appearing in the fossil record in the Eocene of Australia, and surviving until the arrival of humans: the Late Pleistocene on the Australian continent and during the Holocene in the Pacific islands of Fiji, New Caledonia and Vanuatu. Mekosuchine crocodiles are a diverse group displaying a great variety of shapes and sizes. Some taxa, like ''Baru'' and ''Paludirex'', were large semi-aquatic ambush hunters, though the two genera likely differed significantly in their hunting methods. The medium-sized ''Australosuchus'' may have been relatively cold-resistant and taxa like ''Trilophosuchus'' and ''Mekosuchus'' are renowned for their small size. One of the most distinct mekosuchines was ''Quinkana'', with its altirostral (deep) skull and blade-like serrated teeth. There is some question around the lifest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vanuatu
Vanuatu ( or ; ), officially the Republic of Vanuatu (; ), is an island country in Melanesia located in the South Pacific Ocean. The archipelago, which is of volcanic origin, is east of northern Australia, northeast of New Caledonia, east of New Guinea, southeast of Solomon Islands, and west of Fiji. Vanuatu was first inhabited by Melanesians, Melanesian people. The first Europeans to visit the islands were a Spanish expedition led by Portuguese navigator Pedro Fernandes de Queirós, Fernandes de Queirós, who arrived on the largest island, EspÃritu Santo, in 1606. Queirós claimed the archipelago for Spain, as part of the colonial Spanish East Indies and named it . In the 1880s, France and the United Kingdom of Great Britain and Ireland, United Kingdom claimed parts of the archipelago, and in 1906, they agreed on a framework for jointly managing the archipelago as the New Hebrides through an Anglo-French condominium (international law), condominium. An independence movem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pindai Caves
The Pindai Caves of New Caledonia are an archaeological and palaeontological site important for the study of prehistoric human settlement as well as of the Holocene fauna of the island. The Pindai area has been occupied by humans for varying periods over the last 2,800 years. Description The site comprises six caves, in coral limestone upraised about , at the seaward tip of the Népoui Peninsula on the north-west coast of Grande Terre, about north-west of Noumea. Two of the caves have easy walk-in access; they contain the richest cultural material and the fewest fossils. The other four caves are sinkholes capable of trapping animals, especially ground-dwelling and flightless birds, and contain the most fossils. All the caves broaden from their entrances into large underground chambers. Numerous subfossils of extinct fauna have been found in the caves, including the endemic terrestrial crocodile ''Mekosuchus'', the giant horned turtle ''Meiolania'', and numerous bird taxa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oligocene
The Oligocene ( ) is a geologic epoch (geology), epoch of the Paleogene Geologic time scale, Period that 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 Ancient Greek (''olÃgos'') 'few' and (''kainós'') 'new', and refers to the sparsity of Neontology, extant forms of Mollusca, 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 chang ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Éfaté
Efate (), also known as ÃŽle Vate (), is an island in the Pacific Ocean which is part of the Shefa Province in Vanuatu. Geography It is the most populous (approx. 66,000) island in Vanuatu. Efate's land area of makes it Vanuatu's third largest island. Its geological past was heavily volcanic, meaning that a lava shelf surrounds much of the island. Most inhabitants of Efate live in Port Vila, the national capital. Its highest mountain is Mount McDonald with a height of . History Captain James Cook named it Sandwich Island "in honour of my noble patron, the Earl of Sandwich" on his 1774 voyage on . Coconut trees were planted on Efate in the mid-1800s. During World War II, Efate served an important role as a United States military base. On March 13, 2015, Port Vila, the island's largest human settlement and the capital of Vanuatu, bore extensive damage from Cyclone Pam. In December 2024, a magnitude 7.3 earthquake reportedly damaged almost every single house on Efate, r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Before Present
Before Present (BP) or "years before present (YBP)" is a time scale used mainly in archaeology, geology, and other scientific disciplines to specify when events occurred relative to the origin of practical radiocarbon dating in the 1950s. Because the "present" time changes, standard practice is to use 1January 1950 as the commencement date (epoch) of the age scale, with 1950 being labelled as the "standard year". The abbreviation "BP" has been interpreted retrospectively as "Before Physics", which refers to the time before nuclear weapons testing artificially altered the proportion of the carbon isotopes in the atmosphere, which scientists must account for when using radiocarbon dating for dates of origin that may fall after this year. In a convention that is not always observed, many sources restrict the use of BP dates to those produced with radiocarbon dating; the alternative notation "RCYBP" stands for the explicit "radio carbon years before present". Usage The BP scale is s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radiocarbon Dating
Radiocarbon dating (also referred to as carbon dating or carbon-14 dating) is a method for Chronological dating, determining the age of an object containing organic material by using the properties of carbon-14, radiocarbon, a radioactive Isotopes of carbon, isotope of carbon. The method was developed in the late 1940s at the University of Chicago by Willard Libby. It is based on the fact that radiocarbon () is constantly being created in the Atmosphere of Earth, Earth's atmosphere by the interaction of cosmic rays with atmospheric nitrogen. The resulting combines with atmospheric oxygen to form radioactive carbon dioxide, which is incorporated into plants by photosynthesis; animals then acquire by eating the plants. When the animal or plant dies, it stops exchanging carbon with its environment, and thereafter the amount of it contains begins to decrease as the undergoes radioactive decay. Measuring the amount of in a sample from a dead plant or animal, such as a piece of w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drehu Language
Drehu (; also known as Dehu, Lifou, Lifu, qene drehu) is an Austronesian language mostly spoken on Lifou Island, Loyalty Islands, New Caledonia. It has about 12,000 fluent speakers and the status of a French regional language. This status means that pupils can take it as an optional topic for the baccalauréat in New Caledonia itself or on the French mainland. It has been also taught at the Institut national des langues et civilisations orientales (INALCO) in Paris since 1973 and at the University of New Caledonia since 2000. Like other Kanak languages, Drehu is regulated by the Académie des langues kanak, founded in 2007. A separate register of Drehu, known as ''qene miny'', was once used to speak to chiefs (joxu). Very few Drehu speakers know ''qene miny'' today. Phonology Vowels is heard as before nasals. can sometimes be before nasals. Consonants Writing system Drehu was first written in the Latin script by the Polynesian and English missionaries o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Queensland
Queensland ( , commonly abbreviated as Qld) is a States and territories of Australia, state in northeastern Australia, and is the second-largest and third-most populous state in Australia. It is bordered by the Northern Territory, South Australia and New South Wales to the west, south-west and south, respectively. To the east, Queensland is bordered by the Coral Sea and the Pacific Ocean; to the state's north is the Torres Strait, separating the Australian mainland from Papua New Guinea, and the Gulf of Carpentaria to the north-west. With an area of , Queensland is the world's List of country subdivisions by area, sixth-largest subnational entity; it List of countries and dependencies by area, is larger than all but 16 countries. Due to its size, Queensland's geographical features and climates are diverse, and include tropical rainforests, rivers, coral reefs, mountain ranges and white sandy beaches in its Tropical climate, tropical and Humid subtropical climate, sub-tropical c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Riversleigh World Heritage Area
Riversleigh World Heritage Area is Australia's most famous fossil location, recognised for the series of well preserved fossils deposited from the Late Oligocene to more recent geological periods. The fossiliferous limestone system is located near the Gregory River in the north-west of Queensland, an environment that was once a very wet rainforest that became more arid as the Gondwanan land masses separated and the Australian continent moved north. The approximately area has fossil remains of ancient mammals, birds, and reptiles of the Oligocene and Miocene ages, many of which were discovered and are only known from the Riversleigh area; the species that have occurred there are known as the Riversleigh fauna. The fossils at Riversleigh are unusual because they are found in soft freshwater limestone which has not been compacted. This means the animal remains retain their three-dimensional structure, rather than being partially crushed like in most fossil sites. The area is loc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eusuchian
Eusuchia is a clade of neosuchian crocodylomorphs that first appeared in the Early Cretaceous, which includes modern crocodilians. Along with Dyrosauridae and Sebecosuchia, they were the only crocodyliformes who survived the K-Pg extinction. Definition Eusuchia was originally defined by Thomas Henry Huxley in 1875 as an apomorphy-based group, meaning that it was defined by shared characteristics rather than relations. These characteristics include pterygoid-bounded choanae and vertebrae which are procoelous (concave from the front and convex from the back). The possibility that these traits may have been convergently evolved in different groups of neosuchians rather than one lineage spurred some modern paleontologists to revise the group's definition to make it defined solely by relations. In 1999, Christopher Brochu redefined Eusuchia as "the last common ancestor of ''Hylaeochampsa'' and Crocodylia and all of its descendants". In this definition, "Crocodylia" specifically ref ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
