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MSN Encarta - Marsupial Marsupial, common name for a group of mammals typically distinguished by a pouch in the female, called a marsupium, where offspring are carried. The kangaroo, koala, wombat, and opossum are well-known marsupials, as are other less-familiar animals, such as the numbat, bandicoot, ringtail possum, and thylacine. Most marsupial species are found in Australia and New Zealand, although many live in parts of South America, and one species—the Virginia opossum—is found in some regions of North America. encarta.msn.com /encnet/refpages/RefArticle.aspx?refid=761576076   (1161 words)

MSN Encarta - Search View - Marsupial Some marsupials that give birth to one young at a time, notably kangaroos, are able to mate again as soon as offspring emerge from the uterus. Marsupials have between 40 and 50 teeth; humans, in comparison, have only 32 teeth and elephants a mere 6, including their two tusks. Marsupials do not form male-female bonds that extend beyond the time necessary for mating, and the female cares exclusively for the young. encarta.msn.com /text_761576076__1/Marsupial.html   (1204 words)

Pouch (marsupial) - Wikipedia, the free encyclopedia The pouch is a distinguishing feature of marsupials; the name marsupial is derived from the Latin marsupium, meaning pouch. The pouch is basically a fold of skin with a single opening that covers the nipples to protect the Joey as it continues to develop. Kangaroos and wallabies allow their young to live in the pouch well after they are physically capable of leaving. en.wikipedia.org /wiki/Pouch_(marsupial)   (137 words)

Untitled Document In Australia, there are four distinctive groups: the carnivorous marsupials; the marsupial mole; the bandicoot group; and a large group known as "diprotondonts," which includes koalas, wombats, possums, and kangaroos. In most marsupials, the first toe of the hindfoot is opposable to the other four and it lacks a claw; however, many terrestrial marsupials have lost this toe. When newborn marsupials emerge from their mother's reproductive tract and crawl to the pouch, they are tiny and have just begun forming functional organs. www.colszoo.org /animalareas/austral/marsupls.html   (418 words)

Marsupial Education   (Site not responding. Last check: 2007-09-08) Marsupials are mammals in which the female typically has a pouch in which it rears its young through early infancy. The pouch opens toward the front in most marsupials, as most easily seen in the kangaroo, but toward the rear in others, such as the koala and the bandicoot. There are several cases of convergent evolution between marsupials and placental mammals, in which the two animals have evolved to fill the same ecological niche in different parts of the world. www.fortheanimals.com /menu2/marsupials/ed_marsupials.htm   (557 words)

Marsupial Evolution and Post Flood Migration The marsupial counterparts are in many cases identical to a placental twin, and distinguishing them as unrelated is not possible without a much closer inspection than necessary for the differences we typically use to distinguish the Biblical kinds. In most marsupials the broad sequence of changes in the ovary and the genital tract are similar, however the general timing of events in the reproductive cycles is different between marsupials and even between species and subspecies. The marsupial mode of reproduction is very complex, and the evolution from placental to marsupial would require the simultaneous alteration of several independent systems not to mention the development of the pouch and the physical capability necessary for the fetus to crawl to the pouch. www.nwcreation.net /marsupials.html   (2692 words)

OPOSSUM Marsupials, or pouched mammals, are fundamentally different from the placental mammals. Marsupials differ from the placental mammals by the presence of a fur-lined pouch (marsupium) on the abdomen of most of the marsupial female. Marsupials also have a skeletal system that is closer to that of the reptiles from which mammals evolved than placentals. www.bobpickett.org /order_didelphimorphia.htm   (2324 words)

......::::::::: Gaby's Page ::::::::........ Marsupials are one of the world’s most distinguished type of mammals, being any of various nonplacental mammals of the order Marsupialia, including kangaroos, opossums, bandicoots, and wombats, found principally in Australia and the Americas. Marsupials are known for having an outer abdominal pouch in which they use to bare and raise their young, until they reach an age old enough to be on their own. Marsupials have overcome the invasion of other mammals (specifically placentals during the Mesozoic period), the splitting of continents, (see plate tectonics) which led to a whole new environment and way of life for them, and as well the adoption to new physical characteristics to survive in their new environment. gabito.bol.ucla.edu /gabyspage.html   (2360 words)

PIPE-FISHES - LoveToKnow Article on PIPE-FISHES   (Site not responding. Last check: 2007-09-08) 2.Sub-caudal of the common fishes inhabiting the pouch of Syngnathus acUs,~ with the young vegetation of the Sargasso Sea. One side of the sea-weeds among which they may be the membrane of the found passing from brown to green or pouch is pushed aside to admit of a view even brick-red. This marsupial pouch is formed by a fold of the skin developed from each side of the trunk or tail, the free margins of the fold being firmly united in the median line throughout the period during which the eggs are being hatched. 100.1911encyclopedia.org /P/PI/PIPE_FISHES.htm   (537 words)

Lactation in Marsupials   (Site not responding. Last check: 2007-09-08) Marsupials evolved from ancestral therian mammals (which give birth to live young, but have no true placenta) over 80 million years ago; well before the demise of the dinosaurs. Marsupial reproductive strategies are based primarily on the lactation phase, which is in contrast with eutherian mammals where intrauterine development of the young is the primary reproductive investment. The marsupial neonate is born at an extremely early stage of development (most weigh < 0.01 % of the mother's body weight at birth) relative to the neonate of eutherian mammals, even compared with bears and insectivores whose newborn are more developmentally advanced than any marsupial neonate. classes.aces.uiuc.edu /AnSci308/marsupialslact.html   (1816 words)

biology - Marsupial 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 early birth of marsupials removes the developing young much sooner than in placental mammals, and marsupials have not needed to develop a complex placenta to protect the young from its mother's immune system. This requirement is responsible for the more limited range of locomotory adaptations in marsupials than placentals; marsupials must retain a grasping forepaw and cannot develop it into a hoof, wing, or flipper as some groups of placental mammals have done. www.biologydaily.com /biology/Marsupialia   (469 words)

Opossum Reproduction and Life Cycle Not all female marsupials possess a well-developed pouch, as found on the abdomen of the Virginia opossum. Actually, the female opossum was either cleaning the pouch prior to the birth or licking the area to soothe her swollen teats. Why this fascinating process occurs and why it occurs only in the American marsupials and not the Australian marsupials is not completely understood The pairing of spermatozoa may increase sperm motility in the female reproductive tract and/or may help protect the sperm acrosomes during passage n the female tract. www.opossumsocietyus.org /opossum_reproduction_and_life_cycle.htm   (1008 words)

Marsupial: Just the facts...   (Site not responding. Last check: 2007-09-08) Early birth places the tiny new-born marsupial at greater risk, but significantly reduces the risks associated with pregnancy, as there is no need to carry a large fetus to full-term in bad seasons. Because a newborn marsupial must climb up to its mother's nipples, the otherwise minimally developed newborn has front limbs that are much better developed than the rest of its body. There are between 260 and 280 species of marsupials, almost 200 of them native to Australia (A nation occupying the whole of the Australian continent; aboriginal tribes are thought to have migrated from southeastern Asia 20,000 years ago; first Europeans were British convicts sent there as a penal colony) and nearby islands to the north. www.absoluteastronomy.com /encyclopedia/m/ma/marsupial.htm   (748 words)

marsupial --  Encyclopædia Britannica The pouch, or marsupium, from which the group takes its name, is a flap of skin covering the nipples. Soon after the marsupial ovum, or egg, is fertilized, the young are born in a premature state and crawl into the mother's pouch. Marsupial mice live on the forest floor, and marsupial moles burrow beneath the ground. www.britannica.com /eb/article-9105974?tocId=9105974   (798 words)

Some Interesting Facts About Marsupials (and especially Kangaroos) The Virginia opossum (the only marsupial in Michigan) has a gestation period of only 13 days, and the young are only the size of a question mark when they are born. Marsupial mammals were free to evolve in isolation, and evolution produced the characteristics found in present day Australian mammals. Most marsupials have extra scent glands which tell their neighbors whether they are boys or girls, if they are a stranger to the group, or if they are frightened or angry. www.ferris.edu /card/Kids_Corner/marsupials.htm   (533 words)

marsupial. The Columbia Encyclopedia, Sixth Edition. 2001-05   (Site not responding. Last check: 2007-09-08) With the exception of the New World opossums and an obscure S American family (Caenolestidae), marsupials are now found only in Australia, Tasmania, New Guinea, and a few adjacent islands. They are generally distinguished from the higher, or placental, mammals by the absence of a placenta connecting the embryo with its mother, although in a few forms the female has a rudimentary placenta that functions for a short time. Thus, there are animals known as Tasmanian wolves (see thylacine), marsupial moles, marsupial mice, and native cats (see dasyure), which live very much like the correspondingly named placental mammals and, in many cases, are strikingly similar in appearance. www.bartleby.com /65/ma/marsupial.html   (434 words)

The Great Australian Marsupial Night Stalk   (Site not responding. Last check: 2007-09-08) The pouch or pouch area (some marsupials only have a fold of skin for a pouch) provides a protected environment where the young stays attached to the teat until it has developed into a miniature adult. Australian marsupials evolved in isolation from placental mammals and it is thought that this lack of competition allowed the extensive diversity of Australian marsupial species. Marsupials are not native to New Zealand they were introduced from Australia by European settlers to establish a fur industry. www.perthzoo.wa.gov.au /nightstalk/ns04__facts.html   (1838 words)

The Marsupial Bridge The Holton Viaduct Marsupial Bridge is a pedestrian and bicycle path crossing the Milwaukee River connecting the Brady Street neighborhood with the Beer Line B neighborhood north of downtown Milwaukee. The Marsupial Bridge will specifically help out the new condo owners on the ever growing Beerline B and be of no help to Brewers Hill residents. Regarding your contention that "The Marsupial Bridge will specifically help out the new condo owners on the ever growing Beerline B and be of no help to Brewers Hill residents," I'm afraid I disagree, particularly with the assertion that condo owners on Beerline B would be the designated beneficiaries. www.milwaukeeworld.com /marsupial/index.php   (1019 words)

Researchers Discover The Earliest Known Relative Of Marsupial Mammals   (Site not responding. Last check: 2007-09-08) Modern marsupials and their extinct relatives make up an important mammalian lineage, known as metatherians, consisting of mammals that are more closely related to modern marsupial mammals (such as opossum, kangaroos and koala) than to placentals (such as humans, rodents and whales). Modern marsupials are a significant part of the larger metatherian mammal group, and are the descendants of the extinct metatherians that lived during the age of dinosaurs, known as the Mesozoic. In contrast, marsupials give birth the less mature fetuses, and then nurse them for longer periods of time, often in the mother's "marsupial" pouch. www.sciencedaily.com /releases/2003/12/031212080417.htm   (1105 words)

MSN Encarta - Search Results - Marsupial Kangaroos are marsupials, a type of mammal that gives birth... Koala, tree-dwelling marsupial with a specialized diet consisting almost exclusively of the leaves of eucalyptus trees. Mammal : evolution: convergent evolution of mammals and marsupials ca.encarta.msn.com /Marsupial.html   (101 words)

DoAustralia - kangaroo, wallaby, roo, skippy, hopping They are marsupial, which is an animal with a pouch. The red kangaroos are the largest marsupial in the world and are closest related to the Eastern Grey. As soon as it is born it struggles through its mother fur and into her pouch. www.doaustralia.com /Fauna/Kangaroo.html   (360 words)

marsupial They are generally distinguished from placental mammals by the absence of a placenta connecting the embryo with its mother, although in a few forms the female has a rudimentary placenta that functions for a short time. In nearly all marsupials the female's nipples are covered by a pouch, or marsupium, formed by a fold of abdominal skin. The Australian region, which has been isolated from contact with other regions since the Cretaceous period, had almost no native placental mammals, and the marsupials were able to continue their evolution there without competition. www.factmonster.com /ce6/sci/A0831980.html   (359 words)

Oldest Marsupial Fossil Found in China Most archaic marsupial and marsupial-like fossils are known from North America, commented Mike Archer, vertebrate palaeontologist and director of the Australian Museum in Sydney. Though most marsupials are restricted to Australia today, all early fossil ancestors of the mammalian group are known from Asia and North America. Marsupials on the other hand, have short gestation times, but further complete their maturation in their mother's pouch. news.nationalgeographic.com /news/2003/12/1215_031215_oldestmarsupial.html   (949 words)

Mammals, Marsupials and Monotremes marsupials give birth to live young, but they give birth to young that are still very tiny and unformed. After the young are born, they climb up their mother's belly and into a pouch, which is like a pocket in the female's body. Inside the pouch, the young attaches itself to a teat and remains there for some time, depending on which kind of animal it is. Milk is fed to the baby through the teat. www.kidcyber.com.au /topics/mammals.htm   (313 words)

The Great Australian Marsupial Night-stalk   (Site not responding. Last check: 2007-09-08) Marsupials have evolved to have either forward or rear facing pouches, according to whether they have to dig for food and shelter. Marsupials range in size from the large Red Kangaroo that can weigh up to 80 kg or more and stand higher than an adult human does, to tiny shrew-like animals like the Narrow-nosed Planigale that weigh less than 10 g. At least 16 of Australia's 204 marsupial species or subspecies are extinct, one is extinct in the wild and another 53 are critically endangered, endangered or vulnerable. www.perthzoo.wa.gov.au /nightstalk/facts.htm   (1894 words)

CSIRO PUBLISHING - Australian Journal of Zoology The ability of the newborn marsupial to move from the uterus to the pouch and locate the teat is still not fully understood. The newborn of the bandicoot do not have a definite crawl to the pouch, as is seen in macropodids – they move with a snake-like wriggle down a moist 1-cm pathway between the urogenital sinus and the pouch. It is obvious that there are several marsupial ‘birth positions’, and several methods are used by marsupial species to allow the newborn to attach to the teat. www.publish.csiro.au /nid/90/paper/ZO99024.htm   (325 words)

Marsupials at grenadines.net Marsupials are animals that give live birth to their young after a brief gestation and that young spends the next part of babyhood in the mom's pouch. The marsupials and placentals diverged from a pantotheran stem stock in the late Cretaceous. Alphadon (marsupials can be distinguished from placentals by their dentition - marsupials have 3 premolars and 4 molars whilst placentals have 3-5 premolars and 3 molars). www.grenadines.net /carriacou/marsupialhomepage.htm   (1346 words)

SNAIL'S TALES: Garbage can zoo: Virginia opossum After the baby opossums are born, they climb into their mother's pouch and spend about two months feeding on her milk. The first marsupials must have evolved on Laurasia and spread south to Gondwana as the two supercontinets were separating from each other and breaking apart into smaller continents. This theory predicts that marsupials once lived on Antarctica when that continent wasn't covered with ice as it is now and when South America, Antarctica and Australia were directly connected to each other. snailstales.blogspot.com /2005/06/garbage-can-zoo-virginia-opossum.html   (406 words)

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