Lab #4 Quiz Flashcards
Describe order Artiodactyla
Even toe hoofed mammals
What is the first step within a skull key that differentiates an artiodactyla from previous mammals we’ve studied?
Orbit is completely enclosed by solid bony ring
Family cervidae distinguishing headpiece?
Antlers
Family bovidae distinguishing headpiece?
Horns
Family antilocapridae distinguishing head piece?
Pronghorns
What is the spot on the skull that antlers grow from?
Pedicel
In the cervidae family ONLY males grow antlers except for which species?
Caribou. The females grow small antlers as well
If the antlers are removed how can you tell a female from male caribou skull?
Male pedicel is much larger. Toonie sized.
How can you separate a moose skull from other cervidae?
Big space after nasal for bulbous nose tissue.
Elongated premaxillary
(Vomer doesn’t divide entire length, premaxillaries do not meet nasals)
How can you tell a white tailed deer from other members of the cervidae family?
Antlers come forward over rostrum
One main beam of antler and the others are smaller branches
Shallow lacrimal pit
Supraorbital crest lower than frontal bone
How can you distinguish a mule deer from other members of the cervidae family?
Dichotomous branching.
Deep lacrimal pit.
Supraorbital crest is lower than frontal
Vomer divides entire length of nasal
How can you tell a caribou from other members of the cervidae family?
Caribou tiny primitive canine
Vomer divides entire length
Supraorbital crest is higher than frontal bone
How can you tell an elk skull from other members of the cervidae family?
Primitive canine. Vomer does not divide entire length
Premaxillary meets nasal
lacrimal pit is characteristic of which family?
Cervidae
When lacrimal meets nasal it is which family?
Bovidae
When there is a space between nasal and lacrimal, and lacrimal has NO indentation it is which family?
Antilocapridae
What is unique about horns?
They do NOT branch
The do NOT shed
Is bone with tons of tiny foramena all over
Do bovidae shed their horns?
No they grow all through life
How can you tell the age of a bovidae?
Count the rings on the horns
When there is a smooth lacrimal and a space between lacrimal and nasal it is which family?
Antilocapridae
What is unique about the Pronghorn species?
It is the only member of its family in North America
Are pronghorns deciduous?
Yes
Do female Pronghorns has pronghorns?
Yes they have tiny bone cores
What are the three types of caribou?
-Woodland
-mountain
-barren ground
Think of the 3 places I’ve lived
Woodlands county
Mountain CNP
Barren ground Lethbridge