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Taxidermy.Net Forum  |  Taxidermy Discussion Categories  |  Skulls and Skeletons  |  Topic: Dental formula for mammals « previous next »
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Muskrat24
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Location: North Central Ohio
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« on: April 05, 2010, 07:37:06 PM »

Dental formula: A dental formula is a standard number of teeth that a certain mammal has. This formula can be very helpfull when it comes to identifiying a skull or if you have a bottom jaw of an animal and have no clue what it is. All this information comes from The Wild Mammals of Missouri. First of all reading a dental formula.
I 0/0 C 0/0 P 0/0 M 0/0 =
I: incisors
C: canines
P: pre molars
M: molars
The top number represents one top half of the skull and the bottom number represents one bottom half of the jaw.
Pouched Mammals:

Virginia Oposum (didelphis virginiana)
I 5/4 C 1/1 P 3/3 M 4/4=50

INSECT EATING MAMMALS

Masked shrew (Sorex cinereus))
I 3/1 C 1/1 P 3/1 M 3/3= 32

South Easern Shrew (Sorex longirostris)
I 3/1 C 1/1 P 3/1 M 3/3= 32

Short-tailed Shrew (Blarina brevicauda)
I 3/1 C 1/1 P 3/1 M 3/3=32  or  I 4/1 C 1/0 P 2/1 M 3/3=32

Least Shrew (Cryptotis parva)
I 3/1 C 1/1 P 2/1 M 3/3=30  or  I 3/2 C 1/0 P 2/1 M 3/3=30

Eastern Mole (Scalopus aquaticus)
I 3/2 C 1/0 P 3/3 M 3/3=36
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Muskrat24
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« Reply #1 on: April 05, 2010, 07:38:09 PM »

HARE SHAPED MAMMALS

Eastern Cottontail Rabbit (Sylviagus floridanus)
I 2/1 C 0/0 P 3/2 M 3/3=28

Swamp Rabbit (Sylvilagus aquaticus)
I 2/1 C 0/0 P 3/2 M 3/3= 28

White-tailed Jack Rabbit (Lepus townsendii) and Black-tailed Jack Rabbit (Lepus californicus)
I 2/1 C 0/0 P 3/2 M 3/3= 28

GNAWING MAMMALS

Eastern Chipmunk (Tamias striatus)
I 1/1 C 0/0 P 1/1 M 3/3=20

Woodchuck (Marmota monax)
I 1/1 C 0/0 P 2/1 M 3/3=22

Thirteen-lined Ground Squirrel (Spermophilus tridecemlineatus)
I 1/1 C 0/0 P 2/1 M 3/3=22

Franklin's Ground Squirrel (Spermophilus franklinii)
I 1/1 C 0/0 P 2/1 M 3/3=22

Eastern Gray Squirrel (Sciurus carolinensis)
I 1/1 C 0/0 P 2/1 M 3/3=22

Fox Squirrel (Sciurus niger)
I 1/1 C 0/0 P 1/1 M 3/3=20

Red Squirrel (Tamiasciurus hudsonicus)
I 1/1 C 0/0 P 1/1 M 3/3=20

Southern Flying Squirrel (Glaucomys volans)
I 1/1 C 0/0 P 2/1 M 3/3=22

Plains Pocket Gopher (Geomys bursarius)
I 1/1 C 0/0 P 1/1 M 3/3=20

Plains Pocket Mouse (Perognathus flavescens)
I 1/1 C 0/0 P 1/1 M 3/3=20

Beaver (Castor canadensis)
I 1/1 C 0/0 P 1/1 M 3/3=20

Marsh Rice Rat (Oryzomys palustris)
I 1/1 C 0/0 P 0/0 M 3/3=16

Western Harvest Mouse (Reithrodontomys megalotis)
I 1/1 C 0/0 P 0/0 M 3/3=16

Fulvous Harvest Mouse (Reithrodontomys fulvescens)[/b
I 1/1  C 0/0 P 0/0 M 3/3=16

Deer Mouse (Peromyscus maniculatus)
I 1/1 C 0/0 P 0/0 M 3/3=16

White-footed Mouse (Peromyscus leucopus)
I 1/1 C 0/0 P 0/0 M 3/3=16

Golden Mouse (Ochrotomys nutalli)
I 1/1 C 0/0 P 0/0 M 3/3=16

Eastern Wood Rat (Neotoma floridana)
I 1/1 C 0/0 P 0/0 M 3/3=16

Meadow Vole (Microtus pennsylvanicus)
I 1/1 C 0/0 P 0/0 M 3/3=16

Woodland Vole (Microtus pinetorum)
I 1/1 C 0/0 P 0/0 M 3/3=16

Muskrat (Ondatra zibethicus)
I 1/1 C 0/0 P 0/0 M 3/3=16

Southern Bog Lemming (Synaptomys cooperi)
I 1/1 C 0/0 P 0/0 M 3/3=16

Black Rat (Rattus rattus)
I 1/1 C 0/0 P 0/0 M 3/3=16

Norway Rat (Rattus norvegicus)
I 1/1 C 0/0 P 0/0 M 3/3=16

House Mouse (Mus musculus)
I 1/1 C 0/0 P 0/0 M 3/3=16

Meadow Jumping Mouse (Zapus hudsonius)
I 1/1 C 0/0 P 1/0 M 3/3=18

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Muskrat24
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Location: North Central Ohio
Posts: 160


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« Reply #2 on: April 05, 2010, 07:38:33 PM »

FLESH-EATING MAMMALS
Coyote (Canis latrans)
I 3/3 C 1/1 P 4/4 M 2/3=42

Red Wolf (Canis rufus)
I 3/3 C 1/1 P 4/4 M 2/3=42

Red Fox (Vulpes vulpes)
I 3/3 C 1/1 P 4/4 M 2/3=42

Gray Fox (Urocyon cinereoargenteus)
I 3/3 C 1/1 P 4/4 M 2/3=42

Black Bear (Ursus americanus)
I 3/3 C 1/1 P 4/4 M 2/3=42

Raccoon (Procyon Lotor)
I 3/3 C 1/1 P 4/4 M 2/2=40

Least Weasel (Mustela nivalis)
I 3/3 C 1/1 P 3/3 M 1/2=34

Long-tailed Weasel (Mustela frenata)
I 3/3 C 1/1 P 3/3 M 1/2=34

Mink (Mustela vison)
I 3/3 C 1/1 P 3/3 M 1/2=34

Badger (Taxidea taxus)
I 3/3 C 1/1 P 3/3 M 1/2=34

Eastern Spotted Skunk (Spilogale putorius)
I 3/3 C 1/1 P 3/3 M 1/2=34

Striped Skunk (Mephitis mephitis)
I 3/3 C 1/1 P 3/3 M 1/2=34

River Otter (Lutra canadensis)
I 3/3 C 1/1 P 4/3 M 1/2=36 OR
I 3/3 C 1/1 P 4/4 M 1/2=38

Mountain Lion (Felis concolor)
I 3/3 C 1/1 P 3/2 M 1/1=30

Bobcat (Lynx rufus)
I 3/3 C 1/1 P 2/2 M 1/1=28
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