This article needs additional citations for verification . (June 2010) (Learn how and when to remove this template message)
Temporal range: Late Miocene
Tjarrpecinus rothi is an extinct thylacinid marsupial that lived during the late Miocene and has been found at the Alcoota scientific reserve in the Northern Territory. The specific name honors Karl Roth for his contributions to the natural history of central Australia.
Thylacinidae is an extinct family of carnivorous, superficially dog-like marsupials from the order Dasyuromorphia. The only species to survive into modern times was the thylacine, which became extinct in 1936.
Marsupials are any members of the mammalian infraclass Marsupialia. All extant marsupials are endemic to Australasia and the Americas. A distinctive characteristic common to these species is that most of the young are carried in a pouch. Well-known marsupials include kangaroos, wallabies, koalas, possums, opossums, wombats, and Tasmanian devils. Some lesser-known marsupials are the dunnarts, potoroos and cuscuses. Marsupials represent the clade originating from the last common ancestor of extant metatherians. Like other mammals in the Metatheria, they give birth to relatively undeveloped young that often reside in a pouch located on their mothers’ abdomen for a certain amount of time. Close to 70% of the 334 extant species occur on the Australian continent. The remaining 100 are found in the Americas — primarily in South America, but thirteen in Central America, and one in North America, north of Mexico.
The Miocene is the first geological epoch of the Neogene Period and extends from about(Ma). The Miocene was named by Charles Lyell; its name comes from the Greek words μείων and καινός and means "less recent" because it has 18% fewer modern sea invertebrates than the Pliocene. The Miocene is preceded by the Oligocene and is followed by the Pliocene.
T. rothi is known from a holotype left maxillary fragment and was reassembled from a concentration of small bone and tooth fragments. Most of the fragments exhibit chemical erosion and have a layer of calcite.
The description of a new species and genus was published in 2000, the results of examination of fossil material discovered at the "Blast Site", associated with the Bullock Creek fossil beds in the Northern Territory. The describing authors, Peter F. Murray and Dirk Megirian, assigned the name Tjarrpecinus to the new thylacinid genus, combining the Ancient Greek kynos, alluding to the canid family of dogs and wolves, and tyarrpa from the Arrente language for "cracked", alluding to the condition of the holotype.
Obdurodon insignis is an extinct species of monotreme discovered in the Tirari Desert in central Australia. The animal was an ornithorhynchid, resembling the modern platypus Ornithorhynchus but with a bill that possessed molars.
Baru is an extinct genus of Australian mekosuchine crocodilian. It was semi-aquatic, around 4 m (13 ft) in length. Being semi-aquatic its habitat was around fresh pools of water in wet forests, ambushing their prey, much like modern species. The word Baru is Aboriginal and means "crocodile's ancestor".
Nimbacinus dicksoni was an ancient thylacine a distant relative of the modern but extinct thylacinid known as the Tasmanian tiger. It lived approximately 23-16 million years ago in the Miocene period. Nimbacinus dicksoni was about 1.6 ft (50 cm) long. Being a predator, it likely ate birds, small mammals, and reptiles. Like the modern thylacine, it may have been an awkward runner and used stamina to catch prey rather than speed. Fossils have been found in Australia at Riversleigh in north-western Queensland and Bullock Creek in the Northern Territory.
Thylacinus potens was the largest species of the family Thylacinidae, originally known from a single poorly preserved fossil discovered by Michael O. Woodburne in 1967 in a Late Miocene locality near Alice Springs, Northern Territory. It preceded the most recent species of thylacine by 4–6 million years, and was 5% bigger, was more robust and had a shorter, broader skull. Its size is estimated to be similar to that of a grey wolf; the head and body together were around 5 feet long, and its teeth were less adapted for shearing compared to those of the now-extinct thylacine.
Wakaleo vanderleuri is a species of marsupial lion of the genus Wakaleo, that lived in Australia during the Miocene.
The genus Nimbacinus contains two species of carnivorous, quadrupedal marsupials in Australia both of which are extinct:
Thylacinus megiriani lived during the late Miocene, 8 million years ago; the area T. megiriani inhabited in the Northern Territory was covered in forest with a permanent supply of water.
Maximucinus muirheadae lived from the late Oligocene to middle Miocene and is the largest thylacinid species known to have lived in Australia from the late Oligocene to the middle Miocene. The species was a quadrupedal marsupial predator, that in appearance looked similar to a dog with a long snout. Its molar teeth were specialized for carnivory; the cups and crest were reduced or elongated to give the molars a cutting blade. It is estimated to have weighed about 18 kilograms.
Mutpuracinus archibaldi is an extinct carnivorous, quadrupedal marsupial that lived during the middle Miocene and is the smallest known thylacinid at approximately 1.1 kilograms, the size of a quoll, though, more closely related to the recently extinct thylacine.
Nimbacinus richi lived during the middle Miocene and has been found in deposits in Bullock Creek in the Northern Territory of Australia.
Wabulacinus ridei lived during the early Miocene in Riversleigh. It is named after David Ride, who made the first revision of thylacinid fossils. The material was found in system C of the Camel Spurtum assembledge.
Wakaleo alcootaensis was a species of marsupial lions of the genus Wakaleo, that lived during the late Miocene, about 10 million years ago.
Thylacoleo hilli lived during the Pliocene and was half the size of Thylacoleo crassidentatus.
The Macropodidae are an extant family of marsupial with the distinction of the ability to move bipedally on the two hind legs sometimes via saltation, as well as quadrupedally. They are herbivores, but some fossil species like Ekaltadeta are hypothesised to have been carnivores. This can not be proven as it can not be compared with an extant species. The taxonomic affiliations with each other and other groups of marsupials is still in flux and under debate.
Thomas Rich, generally known as Tom Rich, is an Australian palaeontologist. He is, as of 2019, Senior Curator of Vertebrate Palaeontology at Museums Victoria.
Joculusium muizoni is a fossil species discovered at the Riversleigh World Heritage Area. Little is known about the animal.
Propalorchestes is a fossil genus of Diprotodontidae, mammals that existed in Australia.
Thylacinus yorkellus is a fossil species of carnivorous marsupial, a sister species of the recently extinct Thylacinus cynocephalus, the Tasmanian tiger, both of which existed on mainland Australia.
Ian Archibald is an Australian taxidermist responsible for the preparation of animal specimens exhibited in Australian museums.
|This article about a prehistoric marsupial is a stub. You can help Wikipedia by expanding it.|