Lab Exam 1

Didelphis virginiana

Virginia Opossum

O. Didelphimorphia

F. Dedelphidae

• distinct saggital crest

Dasypus novemcinctus

9 banded armadillo

O. Cingulata

F. Dasypodidae

• homodont dentition

• long snout and small orbits

Sorex cinereus

Masked Shrew

O. Eulipotyphla

F. Soricidae (shrew)

• 4 large unicuspids (stained)

• zygomatic arch absent

Sorex hoyi

Pygmy shrew

O. Eulipotyphla

F. Soricidae (shrew)

• 3 large unicuspid teeth (stained)

• zygomatic arch absent

Sorex arcticus

Arctic shrew

O. Eulipotyphla

F. Soricidae (shrew)

• tri-colored

• stained unicuspids

• zygomatic arch absent

Sorex palustris

Water shrew

O. Eulipotyphla

F. Soricidae (shrew)

• large skull

• stained unicuspids

• zygomatic arch absent

Blarina brevicauda

Short-tailed shrew

O. Eulipotyphla

F. Soricidae (shrew)

• short tail

• zygomatic arch absent

Scalopus aquaticus

Eastern mole

O. Eulipotyphla

F. Talpidae (mole)

• short tail, normal nose

• naked tail

• dark brown root and lighter brown tips

• claws!!

• zygomatic arch present

Condylura cristata

Star-nosed mole

O. Eulipotyphla

F. Talpidae (mole)

• star nose sensory organ

• furred tail!

• claws!!

• zygomatic arch present

Myotis lucifugus

little brown bat (cave)

O. Chrioptera

F. Vespertilionidae

• small ears, small tragus

• 2 upper incisors

• 6 cheekteeth

• naked uropatagium

Myotis septentrionalis

northern long-eared bat (cave)

O. Chrioptera

F. Vespertilionidae

• large ears, large tragus

• 2 upper incisors

• 6 cheekteeth

• naked uropatagium

Permimyotis subflavus

Tricolored bat (cave)

O. Chrioptera

F. Vespertilionidae

• small

• 2 upper incisors

• 5 upper and lower cheek teeth

• naked uropatagium

Eptesicus fuscus

Big brown bat (cave)

O. Chrioptera

F. Vespertilionidae

• large ears

• naked uropatagium

• 2 upper incisors

• 4 cheekteeth

Nycticeius humeralis

Evening bat (tree)

O. Chrioptera

F. Vespertilionidae

• 1 upper incisor

• small

Lasiurus borealis

Eastern red bat (tree)

O. Chrioptera

F. Vespertilionidae

• 1 upper incisor

• 5 upper cheekteeth

• SEXUALLY DIMORPHIC—male smaller and more red than female

• light brown roots and silver/red tips

• partially furred uropatagium

Lasiurus cinereus

Hoary bat (tree)

O. Chrioptera

F. Vespertilionidae

• medium brown root and frosty tips

• partially furred uropatagium

Lasionycteris noctivagans

silver-haired bat(tree)

O. Chrioptera

F. Vespertilionidae

• partially furred uropatagium

• dark roots and silver tips

Lepus Americanus

Snowshoe hare

O. Lagomorpha

F. Leporidae

• longer legs and longer ears

• LACKS rufaus nape

• supraorbital NOT fused

• interparietal and parietal fused

Sylvilagus floridanus

Eastern cottontail

O. Lagomorpha

F. Leporidae

• most abundant

• rufaus nape

• white belly

Oryctolagus cuniculus

European rabbit

O. Lagomorpha

F. Leporidae

• fenestrated skull

• supraorbital NOT fused

• rufaus nape

• black on tail

• no white belly