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10 Cards in this Set
- Front
- Back
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Metatheria
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3 Orders
–Diprotodonta [Australasia only] –Polyprotodonta [Australasia and the Americas] –Paucituberculata [South America only] NOT PRIMITIVE ANIMALS Produce very small young after a short pregnancy, less than the length of the oestrous cycle |
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Polyprotodonts
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carnivores and insectivores
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diprotodonts
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omnivores and herbivores
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Small Marsupials
Polyprotodonts |
Narrow-nosed Planigale
Stripe-faced Dunnart Kultarr Yellow-footed Antechinus |
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SMALL MARSUPIALS
Diprotodonts |
Pygmy Possum
Feather tail Glider Honey Possum |
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MEDIUM MARSUPIALS
Polyprotodonts |
Numbat
Phascogale Tiger Quoll Long-nosed Bandicoot Spiny Bandicoot Bilby |
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MEDIUM MARSUPIALS
Diprotodonts |
Squirrel Glider Greater Glider
Common Ringtail Green Ringtail Striped Possum Common Brushtail Rufous Bettong Musky Rat Kangaroo Quokka |
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LARGE MARSUPIALS
Polyprotodonts |
Tasmanian Devil
Thylacine |
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LARGE MARSUPIALS
Diprotodonts |
Cuscus
Koala Northern Hairynosed Wombat Yellow-footed Rock Wallaby Swamp Wallaby Red-necked Wallaby Lumholtz’s Tree Kangaroo Agile Wallaby Euro Red Kangaroo |
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Repro
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Birth is not an equivalent process in marsupials and eutherians. Developmental stage and maternal investment at weaning is quite comparable in these 2 groups
Marsupial pattern: • Reduces risks of pregnancy to mother • Maximises reproductive flexibility –especially in unpredictable environments • Optimises energetic investment by mother • Is an alternative rather than inferior solution to the same pressures which lead to evolution of viviparity |
