Hejnol A, Martindale MQ (2008). “Acoel development indicates the independent evolution of the bilaterian mouth and anus”. 《Nature》 456 (7220): 382. doi:10.1038/nature07309. PMID18806777.
Hejnol A, Martindale MQ (2008). “Acoel development indicates the independent evolution of the bilaterian mouth and anus”. 《Nature》 456 (7220): 382. doi:10.1038/nature07309. PMID18806777.