Dichotomous Key/Sirenia
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< Dichotomous Key(Redirected from Dichotomous Key:Sirenia)
| Dichotomous Key: Sirenia | ||||||
|---|---|---|---|---|---|---|
|
| Parent key: Mammalia |
| Subclasses |
| Marsupialia - Monotremata - Placentalia |
| Key: Mammalia |
| Orders |
| Afrosoricida - Artiodactyla - Carnivora - Cetacea - Chiroptera - Dermoptera - Insectivora - Lagomorpha - Macroselidae - Marsupialia - Monotremata - Perissodactyla - Pholidota - Primates - Proboscidea - Rodentia - Scandentia - Sirenia - Xenarthra |
[edit] 1: Shape of tail
- Tail shape
- Forked - Dugong dugon
- Paddle-shaped - #2: Trichechidae
[edit] 2: Trichechidae
- Fingernails
- No nails on forelimbs - Amazonian Manatee, Trichechus inunguis
- Nails on forelimbs - #3: Geographic Location
[edit] 3: Geographic Location
- Rivers, estuaries, or coastal waters in the
- Western Atlantic - Trichechus manatus
- Eastern Atlantic - Trichechus senegalensis
