Lab quiz 4/1

Question 1

Platyrrhine characteristics

Answer 1

-no bony ear tube
-zygomatic-Parietal: zygomatic bone of the cheek touches the parietal bone that makes up the walls of the braincase
-2.1.3.3 Dental Formula

Question 2

Catarrhine characteristics

Answer 2

-Bony Ear Tube
-Frontal-Sphenoid: frontal bone of brow swings downward to touch the sphenoid (butterfly-shaped) that makes up the forward portion at the base of the brain case
-2.1.2.3 Dental Formula

Question 3

Primate characteristics

Answer 3

-Divergent Hallux present: big toe can abduct (moved away) from other toes to grasp objects; humans are the exception but descend from ancestors with this primate trait.

-Forward-facing Eyes
-Nails present
-Nose Beneath Eyes
-Post-orbital Bar is present

Question 4

Non primate characteristics

Answer 4

-Divergent Hallux is absent: big toe is not divergent and cannot grasp.
-lateral facing eyes
-digits end in claws that project upward (or hooves).
-nose in front of eyes
-Post orbital bar is absent

Question 5

Strepsirhini characteristics

Answer 5

-Open Eye Orbit
-External Lacrimal Duct
-Wet (Moist) Rhinarium
-Toothcomb

Question 6

Haplorrhine characteristics

Answer 6

-Closed Eye Orbit
-Internal Lacrimal Duct:
-Dry Rhinarium
-NO Toothcomb

Question 7

Cercopithecoidea characteristics

Answer 7

-Bilophodont Molar
-Narrow Base: narrow opening at the base of the nose
-Quadrupedal Skeleton: limbs are roughly even in length; tail is present
-Face > brain in skull proportions

Question 8

Hominoidea characteristics

Answer 8

-Wide Base: wide opening at the base of the nose
-Suspensory Skeleton: arms are longer than torso,
tail is absent
-Brain > face in skull proportions

Question 9

Insectivory (same as Faunivory)

Answer 9

mostly animal proteins + fruit + other; third-most common primate diet

Question 10

Folivory

Answer 10

mostly plant proteins + fruit + other; second-most common primate diet

Question 11

Frugivory

Answer 11

mostly fruit + protein + other; most common primate diet

Question 12

Omnivory

Answer 12

broad, eclectic diet of fruit + protein + many other foods; least common primate diet

Question 13

Suspensory

Answer 13

this category is restricted to hominoids (ape and human superfamily); all share suspensory upper body adaptations but fall into specialized subcategories; this is the least-common locomotor category