Dichotomous Key/Placentalia
Placentalia | |
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Kingdom | Animalia |
Phylum | Chordata |
Subphylum | Vertebrata |
Class | Mammalia |
Subclass | Placentalia |
Information related to Placentalia Wikipedia • Wikispecies • Wikicommons | |
Parent key: Mammalia |
Subclasses |
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Marsupialia - Monotremata - Placentalia |
Key: Mammalia |
Orders |
Afrosoricida - Artiodactyla - Carnivora - Cetacea - Chiroptera - Dermoptera - Insectivora - Lagomorpha - Macroselidae - Perissodactyla - Pholidota - Primates - Proboscidea - Rodentia - Scandentia - Sirenia - Xenarthra |
1
- Pulp cavity
- Not present (thin tubes of dentine instead) - Orycteropus afer
- Present - 2
Dentine: | The substance between the enamel (crown) or cementum (root) of a tooth and the pulp chamber. |
2
3
- Capability of true flight
- Yes - Chiroptera
- No - Dermoptera
4
5
6
7
8
- Trunk presence
- Yes - Proboscidea
- No - 9
9
10
- Number of toes
- Any odd number - Perissodactyla
- Any even number - Artiodactyla
11
12
- Number of incisors in upper jaw
- Four - Lagomorpha
- Two - Rodentia
13
14
Could be of the order Pholidota or an armadillo (family Dasyopodidae)
15
16
17
Could be of the orders Afrosoricida, Macroscelidea, Xenarthra, Scandentia, Insectivora, Cetacea