< Dichotomous Key
| Monotremata | |
|---|---|
| Kingdom | Animalia |
| Phylum | Chordata |
| Subphylum | Vertebrata |
| Class | Mammalia |
| Subclass | Monotremata |
| Order | Monotremata |
Information related to Monotremata Wikipedia • Wikispecies • Wikicommons | |
| 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 |
1: Teeth
- Presence of teeth
- Present - Ornithorhynchus anatinus, Platypus
- Not present - #2: Tachyglossidae
2: Tachyglossidae
- Length of snout
- Long - Zaglossus
- Short - Tachyglossus
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