# Chordata

| Chordata Temporal range: Kambriyano – Kamakailan 525–0 Ma
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| Iba't-ibang mga uri ng Chordata |
| Pag-uuring siyentipiko  |
| Kaharian: | Animalia |
| Superpilo: | Deuterostomia |
| Pilo: | Chordata Bateson, 1885 |
| Klase |
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Silipin sa ibaba |

Ang *phylum* o kalapian na **Chordata** ay isang grupo ng mga hayop na binubuo ng lahat ng mga bertebrado at mga malalapit na imbertebrado. Sila ay magkakasama dahil, sa isang bahagi ng kanilang buhay nagkakaroon sila ng notokordo, isang hungkag na panlikod na kurdong nerbyos, mga *pharyngeal slit*, isang endostilo, at isang *post-anal* na buntot. Ang kalapian ng Chordata ay binubuo ng tatlong sublapi: Urochordata, Cephalochordata, at Craniata), kung saan napapabilang ang bertebrado. Ang Hemichordata ay sinasabing ang pang-apat na sublapi subalit karaniwang hinihawalay ito sa bilang isa pang kalapian.

## Klasipikasyon

### Taksonomiya

Ang sumusunod na pagsasaayos ay mula sa ika-3 edisyon ng *Vertebrate Palaeontology*.

* **Kalapian Chordata**
	+ Sublapi **Tunicata** (Urochordata)
	+ Sublapi **Cephalochordata** (Acraniata)
	+ Sublapi **Vertebrata** (Craniata)
		- Klase **Agnatha** Paraphyletic
			* Subklase Myxinoidea
			* Subklase Petromyzontida
			* Subklase Conodonta
			* Subklase **Pteraspidomorphi**
				+ Orden Anaspida
				+ Orden Thelodonti
		- Inpralapi **Gnathostomata Klase **Placodermi Klase **Chondrichthyes Klase **Acanthodii Klase **Osteichthyes**
				+ Subklase **Actinopterygii**
				+ Subklase **Sarcopterygii Superklase **Tetrapoda**
				+ Klase **Amphibia**
				+ Serye **Amniota**
					- Klase **Reptilia Subklase **Anapsida Subklase **Synapsida Subklase **Diapsida**
					- Klase **Aves**
					- Klase **Mammalia**

### Pilogena

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| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| **Chordata**  |

|  |  |  |  |  |
| --- | --- | --- | --- | --- |
|  Cephalochordata |

|  |  |
| --- | --- |
|  |  Amphioxus |
|  |

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|   |

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| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Tunicata  |

|  |  |
| --- | --- |
|  |  Appendicularia (dating Larvacea) |
|  |
|  |  Thaliacea  |
|  |
|  |  Ascidiacea  |
|  |

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|  Craniata  |

|  |  |
| --- | --- |
|  |
Myxini |
|  |
|  Vertebrata  |

|  |  |
| --- | --- |
|  |  Conodonta† |
|  |
|  |  Cephalaspidomorphi† |
|  |
|  |  Hyperoartia |
|  |
|  |  Pteraspidomorphi† |
|  |
|  Gnathostomata  |

|  |  |
| --- | --- |
|  |  Placodermi† |
|  |
|  |  Chondrichthyes |
|  |
|  Teleostomi  |

|  |  |
| --- | --- |
|  |  Acanthodii† |
|  |
|  Osteichthyes  |

|  |  |
| --- | --- |
|  |  Actinopterygii |
|  |
|  Sarcopterygii  |

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| void |

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
|  Tetrapoda  |

|  |  |
| --- | --- |
|  |  Amphibia |
|  |
|  Amniota  |

|  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- |
|  Synapsida  |

|  |  |  |  |  |
| --- | --- | --- | --- | --- |
| void |

|  |  |
| --- | --- |
|  |  Mammalia |
|  |

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|  Sauropsida  |

|  |  |  |  |  |
| --- | --- | --- | --- | --- |
| void |

|  |  |
| --- | --- |
|  |  Aves |
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**Tala: Ang mga guhit ay nagpapakita ng mga maaring pangebolusyon na mga relasyon, kasama na ang mga ekstinkt na taxa. Ang mga ekstinkt na taxa ay nilagyan ng punyal, †. May mga invertebrate dito. Ang Chordata ay isang Kalapian.
* Ang mga posisyon (relasyon) ng mga clade ng Cephalochordata, Tunicate, at Craniata clades ay ay ayon sa ulat ng pang-agham na journal na *Nature*.

## Sanggunian