Mammal Lab Flashcards

1
Q

how are synapsids defined?

A
  • the mammals fall into this group

- have one postorbital fenestra

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2
Q

in species where the postorbital bar is not present, there is a…

A

postorbital process

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3
Q

what does the postorbital fenestra allow for?

A
  1. a strong bite bc of muscle attachment

2. fine movement of the jaw

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4
Q

Important terms for the skull and their relevance:

  • interparietal process
  • sagittal crest
  • postorbital process (know where it is)
  • postorbital bar (know where it is)
  • intraorbital foramen
  • squamosal
  • jugal
  • zygomatic arch
  • auditory bullae
A
  • the interparietal process and sagittal crest are raised areas where the skull halves meet, which allows for the attachment of muscles
  • the infraorbital foramen is a hole underneath the eye which allows nerves to run through it. It was originally important for sucking bc it allowed for fine-scale movement of facial muscles, however it inadvertantly became important for nonverbal communication and for whiskers (vivrissae) to pass through.
  • the squamosal and jugal meet up to form the zygomatic arch, aka our cheekbones!
  • the auditory bullae are associated with the inner ear and function to help us hear better
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5
Q

proper name for whiskers

A

vivrissae

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6
Q

why is teeth specialization important to mammals?

A

because we are warmblooded, we have to constantly regulate our metabolism which takes a lot of energy. therefore, we need to get the most out of the food we eat.

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7
Q

types of teeth

A
  1. Incisors: front-most teeth
  2. Canines: used to kill prey with puncture wounds
  3. Molariform teeth: flat with high surface area, whose grooves fit together to effectively mash food.
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8
Q

what is yawning behavior effective for?

A

detering competition or predators by showing off canines

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9
Q

molariform teeth are most developed in…

A

onmivores and herbivores

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10
Q

Subclass Theria

A

mammals with placentas (all the species in this lab)

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11
Q

Order Marsupial (and this labs species)

A

the marsupials: common opossum

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12
Q

Metatherians

A

marsupials

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13
Q

Eutheria

A

traditional “placentals” (all species in this lab except common opposum)

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14
Q

Order Lypothyphla (and this labs families)

A

the moles and shrews (Talpidae and Soricidae)

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15
Q

Family Talpidae (and this labs species)

A

moles: eastern mole

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16
Q

Family Soricidae

A

shrews: southern short-tailed shrew

17
Q

Order Chiroptera (and this labs’ families)

A

the bats: Vespertilionidae and Molosidae

18
Q

Family Vespertilionidae (and this labs species)

A

the evening bats: big brown bat

19
Q

Family Molosidae (and this labs species)

A

the free-tailed bats: Brazilian free-tailed bat

20
Q

Order Cingulata (and this labs’ families)

A

the armadillos: Dasypodidae

21
Q

Family Dasypodidae (and this labs species)

A

the nine-banded armadillo

22
Q

Order Lagomorpha (and this labs’ families)

A

the rabbits and hares: Leporidae

23
Q

Family Leporidae

A

the rabbits: marsh rabbit

24
Q

Order Rodentia (and this labs’ families)

A

the rodents: Scurnidae and Muridae

25
Q

Family Scurnidae (and this labs species)

A

the squirrels and relatives: eastern gray squirrel and southern flying squirrel

26
Q

Family Muridae (and this labs’ subfamilies)

A

the rats and mice: Subfamily Sigmodontidae and SF Murinae

27
Q

Subfamily Sigmadontidae (and this labs species)

A

our native rats and mice: cotton rat and cotton mouse

28
Q

Subfamily Murinae (and this labs species)

A

old world rats and mice: norway rat and house mouse

29
Q

Order Carnivora (and this labs families)

A

the carnivorans: Canidae, Procyonidae, Mustelidae, Felidae

30
Q

Family Canidae (and this labs species)

A
  • Gray Fox

- Coyote

31
Q

Family Procyonidae (and this labs species)

A

the raccoons

32
Q

Family Mustelidae (and this labs species)

A

the weasels and relatives: north american river otter

33
Q

Family Felidae (and this labs species)

A

the cats, bobcats, lions, and relatives

-bobcat

34
Q

Order Artiodactyla (and this labs families)

A

the even toed ungulates

Family Cervidae: deer and allies

Family Bovidae: cattle, antelope and allies

35
Q

Family Cervidae (and this labs species)

A

deer and allies:

-white tailed deer

36
Q

Family Bovidae (and this labs species)

A

cattle, antelope, and allies

-American bison

37
Q

Order Cetacea (and this labs suborders)

A

whales and dolphins

Suborder Odontoceti

Suborder Mysticeti

38
Q

Suborder Odontoceti

A

the toothed whales

-bottlenose dolphin

39
Q

Suborder Mysticeti

A

the baleen whales

-humpback whale