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Prototheria

Prototheria
Behe Kretazeo-gaur egun
Sailkapen zientifikoa
ErreinuaAnimalia
AzpierreinuaBilateria
FilumaChordata
SubfilumVertebrata
SuperklaseaTetrapoda
Subklasea Prototheria
Gill, 1872

Prototheria (grezieraz prōtos, lehena, + thēr, animalia basatia) talde taxonomiko edo taxoi bat da. Bere barruan gaur egun Monotremata baino ez dago, baina hainbat talde fosil ere sartzen dira. Arrautzak jartzen dituzten (eta zituzten) ugaztunak dira eta normalki honen barruko azpiklase gisa sailkatzen da.

Talde honetako animalia gehienak desagerturik daude jada. Kretazeo eta Zenozoikoan ugariak dira, nahiz eta gaur egun ekidna eta ornitorrinkoa baino ez diren geratzen.

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