Ch. 12 - Elephants and Manatees Flashcards
These two orders are considered subungulates
Proboscidae and Sirenia
Proboscidae and Sirenia are what kind of fermenters?
Hindgut fermenters
Do proboscids or sirenians rumenate?
No
Proboscids and sirenians have this type of molars
Dyphyodont
In what direction are proboscid and sirenian molars replaced?
Horizontally
Proboscids and sirenians lack these bones
Clavicles
Do proboscids and sirenians have abdominal testes or a distended scrotum?
Abdominal testes
How many digits do proboscids/sirenians have?
4
How many extant families of proboscids/sirenians are there?
3
What is the only family in the Order Proboscidae?
Elephantidae
How many species are in Family Elephantidae?
2
What is the difference between African and Asian elephants’ trunks?
African elephant has two lips; Asian elephant has a single lip
Which elephant species has 1 less toenail on the hind feet?
African elephant
What is the sex ratio of elephants?
90+% female
What is the lifespan for elephants?
70 years