Nielsen C. Trochophora larvae: cell-lineages, ciliary bands and body regions. 2. Other groups and general discussion. J Exp Zool B Mol Dev Evol. 2005 Sep 15;304(5):401-47. doi:10.1002/jez.b.21050. PMID 15915468.
nih.gov
ncbi.nlm.nih.gov
Nielsen C. Trochophora larvae: cell-lineages, ciliary bands and body regions. 2. Other groups and general discussion. J Exp Zool B Mol Dev Evol. 2005 Sep 15;304(5):401-47. doi:10.1002/jez.b.21050. PMID 15915468.
zobodat.at
El. Metschnikoff: Über die systematische Stellung von Balanoglossus. In: Zoologischer Anzeiger, Vol. 4, S. 153–157, 1881. (Digitalisat)
