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BIO321 Mammalogy > Rodentia > Flashcards

Rodentia Flashcards

1
Q

Rodent skull characteristics

A

single pair of upper and lower incisors, diastema, bank of cheekteeth, mandibular fossa is trough or channel, lack sagittal crest, small coronoid process, large masseter

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2
Q

rodents and lagomorphs grouped in a clade called

A

glires

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3
Q

Jaw type where lower incisor runs directly underneath all the cheekteeth and incisor root is in line with incisor tip and length of dentary

A

sciurognathous

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4
Q

Jaw where lower incisor bows away from row of cheek teeth, so incisor root is outside of tooth row. Incisor root is not in line with angular process

A

hystricognathous

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5
Q

IOF is small and located on rostrum at base of zygomatic plate. Have a tubercule below IOF

A

sciuromorphous

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6
Q

IOF is large, slit-shaped hole in the zygomatic plate itself (v or y shape)

A

myomorphous

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7
Q

Extremely large IOF that is bigger than foramen magnum and composes entirety of zygomatic plate

A

hystricomorphous

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8
Q

Which family belongs to squirrels, chipmunks and prairie dogs?

A

Sciuridae

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9
Q

Which family do jumping mice, birch mice and jerboas belong to?

A

Dipodidae

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10
Q

Which suborder do beavers, gophers, kangaroo rats and pocket mice belong to?

A

Castorimorpha

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11
Q

Features of Castorimorpha skull

A

Small IOF on side of rostrum, IOF may go all the way through

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12
Q

Family of sewells/mountain beavers

A

Aplodontiidae

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13
Q

Aplodontia rufa skull features

A

low, wide skull with flaring zygomatic arches, long bony canal leading to AB, vase-shaped AB, unique crown pattern on cheekteeth

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14
Q

Aplodontia rufa body features

A

fusiform body, small eyes, ears and tail, large claws on forefeet, small white patch under ear, large vibrissae, herbivorous

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15
Q

Sciuridae skull features

A

round, egg-shape skull, large orbits, prominent post-orbital process, bump on rostrum near IOF, 4-5 cheekteeth, palate ends at same level as toothrow, jugal contacts frontal

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16
Q

Sciuridae body features

A

small, long furry tail, large eyes, small yet prominent ears, forefeet have 4 digits and hindfeet have 5, sharp claws

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17
Q

3 families in Castorimorpha

A

Geomyidae, Heteromyidae, Castoridae

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18
Q

3 families in Myomorpha

A

Zapodidae, Cricetidae, Muridae

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19
Q

2 families in Sciuromorpha

A

Aplodontiidae, Sciuridae

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20
Q

2 families in Hystricomorpha

A

Erithizontidae, Myocastoridae

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21
Q

Scientific name of flying squirrel

A

Glaucomys sabrinus

22
Q

Tree squirrels have ___ constriction between orbits and orbits point _____

A

wide, outward

23
Q

Ground squirrels have ___ constriction between orbits and orbits point _____

A

narrow, upward

24
Q

A ground squirrel with stripes on face and body

A

Tamias

25
Q

A ground squirrel with no stripes on face but a pair of dark and light stripes on body

A

callospermophilus

26
Q

A dappled brown and white ground squirrel

A

otospermophilus beecheyi

27
Q

A sand-colored ground squirrel with white lateral stripes on body

A

Ammospermophilus nelsoni

28
Q

A sand-colored ground squirrel with no stripes

A

Xerospermophilus mohavensis

29
Q

Family that includes New World rats
& mice; voles, lemmings, hamsters

A

cricetidae

30
Q

Family that includes Old World rats
and mice, gerbils

A

muridae

31
Q

features of subfamily arvicolinae

A

small ears relatively hidden by fur, short legs, tail shorter than body, uniform coloration, fusiform body, large and stout skull, broad incisors, prismatic cheek teeth, prominent occipital crest

32
Q

Scientific name of California vole

A

microtus californicus

33
Q

Scientific name of muskrat

A

ondatra zibethicus

34
Q

Subfamily of woodrats, deer mice and harvest mice

A

neotominae

35
Q

Woodrat with light feet, bicolored tail, large ears

A

neotoma lepida

36
Q

Woodrat with dusky feet, large ears

A

N. fuscipes/N. macrotis

37
Q

A tiny mouse with grooved incisors

A

Reithrodontymys megalotis

38
Q

Neotoma skull characteristics

A

high crowned lophodont cheek teeth, no temporal ridge

39
Q

name for jumping mouse

A

zapus

40
Q

zapodidae skull characteristics

A

enlarged IOF, sciuromorphic lower jaw, separate accessory foramen, thin and perforated angular process, 18 teeth, grooved upper incisors

41
Q

Scientific name of North American porcupine

A

Erethizon dorsatum

42
Q

Scientific name for nutria

A

Myocastor coypus

43
Q

Nutria and porcupines are in which suborder?

A

hystricomorpha

44
Q

Scientific name of American beaver

A

castor canadensis

45
Q

scientific name for pocket gopher

A

thomomys bottae

46
Q

features of thomomys bottae

A

massive procumbent incisors, small IOF on side of rostrum, simple columnar molars, palatine pits between teeth rows, sharp angle from base of teeth to incisors, large front claws, fusiform body

47
Q

Spiny pocket mice with rectangular parietal bone

A

Chaetodipus

48
Q

Silky pocket mice

A

Perognathus

49
Q

Kangaroo rats

A

dipodomys

50
Q

kangaroo mice

A

microdipodops

BIO321 Mammalogy (11 decks)

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