Week 2 mammals Flashcards
Order of rabbits, hares, and pikas
Lagomorpha
Family: pikas
Ochotonidae
American pika
SN: Ochotona princeps
no visible tail
short rounded ears
very soft fur
Skull: 2 pairs incisors
no boney latticework
fenestrated maxillary
Family: rabbits and hares
Leporidae
eastern cottontail
SN: Sylvilagus floridanus
hind foot <100 mm
Skull: boney latticework
2 pair upper incisors
postorbital process not fused to skull
swamp rabbit
SN: Sylvilagus aquaticus
hind foot > 100 mm
post orbital process fused to skull
Order: Rodent
beavers, gopher, mouse, rats, chipmunk, squirrel
Family: pocket Gophers
Family: Geomyidae
plains pocket gopher
SN: Geomys bursarius
check pouches
curved claws
sparsely haired tail
skull: 2 grooves each
broad flat skull
Family for beavers
Castoridae
American beaver
SN: Castor canadensis
big with a flat tail
skull: huge teeth, no grooves
massive zygomatic arch
Family of jumping mice
Dipodidae
meadow jumping mouse
SN: Zapis hudsonius
large hind feet, long sparsely furred tail
sides orange, dark on dorsum
Skull: extremely tiny
small premolar Infront of 3 molars
1 groove on incisors
Family: pocket mice, kangaroo mice/rats
Heteromyidae
Ord’s kangaroo rat
SN: Dipodomys ordii
long and powerful hind limbs
white stripe across thighs
very long tail with fur tuft
skull: enlarged auditory bullae
grooved incisors
