| Derived Characteristics | Prototheria | Metatherians | Eutheria | Eutherian Groups |
|---|---|---|---|---|
|
What is lactation?
females feed their young
|
What is hatching from eggs?
how their babies come into the world
|
What are the Americas?
continent(s) of opossums
|
What is "true wild animals?"
meaning of eutheria
|
What are the lagomorphs (hares and rabbits)?
this group can gnaw with their mouths closed
|
|
What are heterodontyl teeth?
teeth for different purposes
|
What is they do not have teeth?
type of teeth as adults
|
What are marsupials?
common name of this group
|
What is through a connection to placenta of the mother?
how embryos grow
|
What are the rodents?
this group's incisors continually grow and become like chisels
|
|
What is determinate growth?
epiphyses fuse with shafts of long bones
|
What is Monotremata?
the order of the living prototherians
|
What is they are doubled?
number of reproductive systems
|
What is longer than in metatherians?
length of gestation
|
What are the canids (wolves, coyotes, jackals, foxes, dogs)?
group of predators adapted for endurance
|
|
What is hair?
integument covering
|
What is inefficient because legs oriented laterally to body?
efficiency of locomotion
|
What is single pair of incisors dominates lower jaw?
diprotodont definition
|
What is 6?
number of sets of molars of elephants
|
What are the skunks and stink badgers?
group of carnivores with aposematic coloration
|
|
What is monochromatic or dichromatic vision?
type of sight
|
What are the neck and thorax?
location of ribs
|
What are the kangaroos, wallabies, and possums?
diprotodonts are these kinds of animals
|
What is excellent sense of smell, poor eyesight and hearing?
how good smell, eyesight, and hearing are in elephants
|
What are the artiodactyls (even-toed ungulates, ruminants)?
group that walks on two toes
|
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