Chordata

Chordata
Pseudorasbora parva
Klassans bewoniethek
Gwlaskor:	Animalia
Ughfylum:	Deuterostomia
Fylum:	Chordata Haeckel, 1874
Klassys
Tunicata Ascidiacea (skitviles) Thaliacea Appendicularia Sorberacea Cephalochordata Leptocardii Vertebrata (mellkeynogyon) Myxini Petromyzontida (mornadres) Chondrichthyes (puskes migornek) Actinopterygii Sarcopterygii Amphibia (diwelvenogyon) Reptilia (kramviles) Aves (ydhyn) Mammalia (bronnviles)

An fylum Chordata yw onan a vrassa fyla enevales, ow komprehendya a-dro dhe 65,000 eghen.^[1] An mellkeynogyon (puskes, diwelvenogyon, kramviles, ydhyn ha bronnviles) yw eseli Chordata. Yma dew vagas a enevales heb mellow keyn, Tunicata, (skitviles hag erel) ha Cephalochordata, y'n fylum ynwedh. Kynsa eseli Chordata a omdhiskwedhas nans yw 550 milyon bledhen.^[2]

1. ↑ Chapman, Arthur D. (2009) Numbers of Living Species in Australia and the World. Drehedhys 16 Ebrel 2013.
2. ↑ Hennessey, Kathryn & Victoria Wiggins (2010) The Natural History Book, Dorling Kindersley, Loundres.