Dichotomous Key/Chordata

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Dichotomous Key: Chordata

Kingdom: Animalia

Phylum: Chordata

Information related to Chordata

Phyla
Parent key: Animalia
Acanthocephala - Acoelomorpha - Annelida - Arthropoda - Brachiopoda - Chaetognatha - Chordata - Cnidaria - Ctenophora - Cycliophora - Echinodermata - Ectoprocta - Entoprocta - Gastrotricha - Gnathostomulida - Hemichordata - Kinorhyncha - Lophotrochozoa - Loricifera - Micrognathozoa - Mollusca - Myxozoa - Nematoda - Nematomorpha - Nemertea - Onychophora - Orthonectida - Phoronida - Placozoa - Platyhelminthes - Porifera - Priapulida - Rhombozoa - Rotifera - Sipuncula - Tardigrada
Key: Chordata
Subphyla
Cephalochordata - Myxini - Urochordata - Vertebrata

1

Vertebrae
- Present - #4
- Not present - #2

2

Feeding method
- Filter - Urochordata
- Jawless, sucking mouth - Myxini

3

No options yet

4

Jaw
- Present - #5
- Not present - Petromyzontidae

5

Skeletal material
- Cartilage - Chondrichthyes
- Bone - #6

6

Primary habitat (does not include secondary aquatic animals such as newts, aquatic snakes, whales, dolphins, ....)
- Aquatic - #10
- Terrestrial or amphibious - #7

7

Metamorphosis (not within egg or womb)
- Present - Amphibia
- Not present - #8

8

Scales
- Present - Reptilia
- Not present - #9

9

Feathered wings
- Present - Aves
- Not present - Mammalia

10

Fins
- Lobed - #11: Sarcopterygii
- Rayed - Actinopterygii

11: Sarcopterygii

Ability to breathe air
- Present - Dipnoi
- Not present - Actinistia

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