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Bilateria

Arbol filogenético:


 ,_______________________________________________________ Protostomia
 | 
 | ,____________________________________ Pterobranquios
__| | 
 | |____________________________________ Equinodermos
 |_ Deuterostomia __|
 | ,___________________ Enteropneustos
 | | 
 |_ Circotretes __| ,______ Urocordados
 | | 
 |_ Cordados _| ,__ Cefalocordados
 |___| 
 |__ Vertebrados




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