Phalangeriformes is a paraphyletic suborder of about 70 species of small to medium-sized arboreal marsupials native to Australia, New Guinea, and Sulawesi. The species are commonly known as possums, gliders, and cuscus. The common name "possum" for various Phalangeriformes species derives from the creatures' resemblance to the opossums of the Americas. However, although opossums are also marsupials, Australasian possums are more closely related to other Australasian marsupials such as kangaroos.
The Muroidea are a large superfamily of rodents, including mice, rats, voles, hamsters, lemmings, gerbils, and many other relatives. Although the Muroidea originated in Eurasia, they occupy a vast variety of habitats on every continent except Antarctica. Some authorities have placed all members of this group into a single family, Muridae, due to difficulties in determining how the subfamilies are related to one another. Many of the families within the Muroidea superfamily have more variations between the families than between the different clades. A possible explanation for the variations in rodents is because of the location of these rodents; these changes could have been due to radiation or the overall environment they migrated to or originated in. The following taxonomy is based on recent well-supported molecular phylogenies.
The rodent family Platacanthomyidae, or Oriental dormice, includes the spiny dormice and the Chinese pygmy dormice. In spite of their appearance, these animals are not true dormice, but are part of the large and complex superfamily Muroidea. The platacanthomyids can be distinguished from the true dormice, because they have no premolars, giving them three cheek teeth, like their relatives, the Muroidea.
The pygmy mouse lemur, also known as Peters' mouse lemur or dormouse lemur, is a primate weighing only 43–55 g (1.5–1.9 oz); it is the second smallest of the mouse lemurs. Its dorsal side is a rufous-brown colour, and creamy-white ventrally. It lives in dry deciduous forests of western Madagascar. It has been captured in the Tsingy de Bemaraha Nature Reserve, the Andramasy forests north of Belo sur Tsiribihina, and the border of heavily degraded deciduous forest and savanna at Aboalimena. It has also been found in other habitats, in mangroves in two localities.
The hazel dormouse or common dormouse is a small dormouse species native to Europe and the only living species in the genus Muscardinus.
The Chinese dormouse or Sichuan dormouse is a species of dormouse found in subalpine mixed forests in northern Sichuan, China, where it is known from Jiuzhaigou and Wanglang Nature Reserves. It is known only from two captured female specimens taken in the Wanglang Natural Reserve, and was first described by Wang Youzhi in 1985 and relisted by Corbet and Hill under a new genus as Chaetocauda sichuanensis. It is currently the only member of the genus Chaetocauda. The two specimens had head and body lengths of 90mm and 91mm and tail lengths of 92mm and 102mm, respectively. They weighed 24.5 and 36.0 g. It is nocturnal and arboreal, nesting in trees around 3 metres above the ground, and was found above an altitude of 2500m above sea level. It is classified as endangered by the IUCN as of the 2004 Red List due to its small, isolated habitat.
The pygmy hog is the rarest species of pig in the world today, and is the only species in the genus Porcula. It is also the smallest species of pig in the world. Endemic to India, the pygmy hog is a suid native of the alluvial grasslands in the foothills of the Himalayas, at elevations of up to 300 m (980 ft). Populations of pygmy hogs were once widespread in the tall, dense, wet grasslands in a narrow belt of the southern Himalayan foothills from north-western Uttar Pradesh to Assam, through southern Nepal and North Bengal, and possibly extending into contiguous habitats in southern Bhutan. Due to human encroachment and destruction of the pygmy hogs’ natural habitat, the species was thought to have gone extinct in the early 1960s. However, in 1971, a small pygmy hog population was rediscovered as they were fleeing a fire near the Barnadi Wildlife Sanctuary in Assam. Today, the only known population of pygmy hogs resides in Manas National Park in Assam, India. The population is threatened by livestock grazing, fires and poaching. With an estimated population of less than 250 mature individuals, the pygmy hog is listed as an Endangered species on the IUCN Red List, and conservation efforts such as captive breeding and re-release programs are currently being employed.
Pseudocheiridae is a family of arboreal marsupials containing 17 extant species of ringtailed possums and close relatives. They are found in forested areas and shrublands throughout Australia and New Guinea.
The Malabar spiny dormouse is a species of muroid rodent endemic to the Western Ghats of India. It is the only extant species in the genus Platacanthomys and although resembling a dormouse, it is not closely related. About the size of a brown rat, this arboreal species lives in tree holes in dense forest habitats in a small family group. They are distinguishable from other species in the area by their bushy tuft tip to the tail and the spiny fur on the back.
The eastern pygmy possum is a diprotodont marsupial of south-eastern Australia. Occurring from southern Queensland to eastern South Australia and also Tasmania, it is found in a range of habitats, including rainforest, sclerophyll forest, woodland and heath.
The pygmy three-toed sloth, also known as the monk sloth or dwarf sloth, is a species of sloth in the family Bradypodidae. The species is endemic to Isla Escudo de Veraguas, a small island off the Caribbean coast of Panama. The species was first described by Robert P. Anderson of the University of Kansas and Charles O. Handley Jr., of the Smithsonian Institution in 2001. The pygmy three-toed sloth is significantly smaller than the other three members of its genus, but otherwise resembles the brown-throated three-toed sloth. According to Anderson and Handley Jr., the head-and-body length is between 48 and 53 centimetres, and the body mass ranges from 2.5 to 3.5 kg.
The pygmy blue whale is a subspecies of the blue whale found in the Indian Ocean and the Southern Pacific Ocean.
The Chinese pygmy dormouse, is a species of rodent of the family Platacanthomyidae found in China and Vietnam.
Slender ringtail possum or Small ringtail possum (Pseudochirulus), also known as the ringtail possum, is a genus of marsupial in the family Pseudocheiridae native to Indonesia, Papua New Guinea and Queensland, Australia. Pseudochirulus live on trees and their diet mainly consists of leaves. The ringtail possums are related to five other genera Hemibelideus, Petauroides, Petropseudes, Pseudocheirus and Pseudochirops.
The pygmy shrew tenrec is a species of placental mammal in the family Tenrecidae. It is endemic to Madagascar. Its natural habitat is subtropical or tropical moist forests. While it is not endangered, its population is slowly declining as it is threatened by habitat loss. This is of concern, though does not yet merit a higher protection level.
The woodland dormouse is a species of rodent in the family Gliridae. It is native to southern and eastern Africa and is also known as the African dormouse, African dwarf dormouse, African pygmy dormouse, or colloquially as micro squirrel. Found in limited numbers in the pet trade, it has complicated care requirements compared to other pet rodents. Its natural habitats are subtropical or tropical, moist montane forests and rivers.
The Pernambuco pygmy owl is a species of owl in the family Strigidae. This species, first described in 2002, is endemic to Pernambuco state in Brazil.
