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41 Cards in this Set
- Front
- Back
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Name and characterize the living orders of metatherians
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1. Paucituberculata
2. Didelphimorphia 3. Microbiotheria 4. Dasyuromorphia (primitive Australian marsups) 5. Notoryctemorphia 6. Peramelemorphia 7. Diprotodontia |
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Characterize Dasyuromorphia and Microbiotheria
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Dasyuromorphia : Dasyuroid marsups and marsup carnivores
Microbiotheria: Monito del Monte |
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Characterize Paucituberculata and Didelphimorphia
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Paucituberculata: Shrew opossum
Didelphimorphia: American marsup |
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Characterize Notoryctemorphia, Peramelemorphia, and Diprotodontia
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Notoryctemorphia: marsupial moles
Peramelemorphia: Bandicoots and bilbies Diprotodontia: Kangaroos, possums, wallabies, and relatives |
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How was New Guinea formed and what affect did it's formation have on the environment of Australia?
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New Guinea rose up when Australia crashed into SE Asia ~15 my ago. It's rise created a rain shadow affecting northern and central Australia. The climate changed and created arid regions in these areas of Australia
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Of the families of mammals we have discussed in class, which occur in New Guinea?
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Tasmanian Wolf, some Australian Bandicoots (ex Spiny bandicoot),
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Identify Myrmecobidae
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Numbat or banded anteater
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Identify Dasyuridae
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Marupsial; mice, cats and the Tasmanian devil
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What families of Monotremata and Marsupials contain taxa that are adapted to feed on ants and termites?
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Monotremata:
Family Family Tachyglossidae Metatheria: 1. Family Dasyuridae 2. Family Myrmecobius 3. Pygmy-possums 4. Family Talpidae 5. Family Soricidae |
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Identify a marsupial tt's an arboreal folivore and identify its adaptations and behaviors associated w/this mode of feeding
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Koala:
-Sedentary -Feeds only on eucalyptus and box tree leaves (and mistletoe) -spends all its times feeding and sleeping -digestion occurs during times of inactivity -Hallux |
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Diagram the upper and molar tribosphenic molars
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..
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Name, characterize, and identify the zoogeographic region of each of the living ordrs of metatherians and monotremata
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..
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When did the opossum first come to VT?
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1921
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Name and characterize the families of the order Insectivora tt occur in the US
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1. Family Talpidae:
-Desmans, moles, and relatives -long narrow rostrum 2. Family Soricidae (shrews) -No zygomatic arch -No auditory bullae -No postorbital process |
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List the families and genera in each family of Insectivora that occur in VT
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1. Family Soricidae (shrews)
a. Masked shrew b. water " c. Smoky " d. Long-tailed shrew e. Pygmy shrew f. Northern short-tailed shrew 2. Family Talpidae a. Hairy-tailed mole 2. Star-nosed mole |
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Identify Dryolestoides
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First to have Tribosphenic molar and angular process of dentary
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Identify Triconodont
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-has a heterodont dentition
-cheek teeth have 3 cups, molars are triconodont |
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Identify Symmetrodonta
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Molars not yet Tribosphenic: 3 cups but no talonid basin (shaped like an isoceles triangle)
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Identify Thecodont
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Teeth set in a socket
ex: humans |
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Identify Acrodont
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Teeth sit on top of gums
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Identify Alveolus
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Socket tooth sits in
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Identify Prototheria
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Contains the monotremate but no the metatherians or eutherians
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Identify Docodonts
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Mesozoic mammals w/unclear phylogenetic placement
-heterodont dentition w/quadrate molars w/6 cusps |
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Identify Tarsipedidae
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Honey possum or noolbender
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Identify Acrobatidae
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Feather-tailed gliders
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Identify Thylacomyidae
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Bilbies or rabbit-eared bandicoots
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Identify Burramyidae
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Pygmy possums
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Identify Phascolarctidae
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Koala
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Identify Macropodidae
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Kangaroos, wallaroos, wallabies, and pademelons
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Identify Thylacinidae
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Tasmanian wolf
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Identify Cynocephalidae
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Culugos and flying lemurs
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Identify Dasypodidae
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armadillos
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Identify Chorio-allantonic placenta
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the placenta the embeds deeply into uterin wall and is found in eutherians
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Identify Chorio-vitelline placenta
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Primitive placenta; found in metatherians
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Identify Caenolestidae
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shrew opossum?
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Identify hypsodont
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High crowned teeth
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Identify brachyodont
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Low crowned teeth
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During wt geological time period and where did each have its origin; Metatherians, Multituberculata, Monotremata, Eutherians, Dasyuromorphia
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1. Metatherians= N.Am Cretaceous
2. Multituberc=widespread, Cret. 3. Monotremata=Australia, Cret 4. Eutheria=Asia, Cretac 5. Dasyuromorph=Australia, Eocene?? |
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What is a precocial young? An altricial?
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precocial= well developed at birth
a. Eyes open b. Able to move about within a short period of time after birth altricial:Young helpless and poorly developed at birth a. Eyes closed b. Naked, hairless to fully but lightly furred c. Ears folded closed |
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What's reaxin
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cause reabsorption of ligaments of pubic symphysis in preparation forbirth
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What's oxytocin?
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Causes contractions of the uterus during birth
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