Lab 1 Flashcards
ungulates
hoofed mammals that walk on the tips of their toes
artiodactyls
a hoofed even toed mammal
perissodactyls
a hoofed odd toed mammal
phylogeny
the evolutionary history of a group of organisms
cetartiodactyla
supraorder formed by artiodactyls and whales
unguligrade locomotion
when mammals walk on the tips of their toes
paraxonic
when the weight bearing axis is between the walking toes
artyodactyls
mesaxonic
main weight bearing axis passes through a third enlarged digit
perissodactyls
astragulus
special angle joint that artiodactyles have
one of the tarsal bones
connects artyodactlys to whales
herbivorous perissodactlys and artiodactyls teeth
selenodont cusps
cheek teeth with crescent shaped cusps meant for grinding fibrous plants
hypsodont (high + tooth) crowns
ruminants lack
incisors and upper canines
omnivorous artiodactyls teeth
bunodont cusps
brachydont (low + tooth) crowns
3 types of cusps
lophodont
bunodont
selenodont
hindgut fermentation
perissodactyls
foregut fermentation
ruminants