Fjouwerpoatigen: ferskil tusken ferzjes
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L →Tuskenstamme-opbou: red |
L →Tuskenstamme-opbou: red |
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Rigel 48:
* boppeklasse [[fjouwerpoatigen]] (''Tetrapoda'')
** klasse [[amfibyen]] (''Amphibia'')
**
*** klasse [[fûgels]] (''Aves'')
*** klasse [[reptilen]] (''Reptilia'')
**
*** klasse [[sûchdieren]] (''Mammalia'')
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