<div>Két cikk a bálnák méhen belüli fejlődéséről:</div><div> </div><div><a href="https://www.nature.com/news/2009/090203/full/news.2009.77.html">https://www.nature.com/news/2009/090203/full/news.2009.77.html</a></div><div> </div><div><a href="https://evolutionforskeptics.wordpress.com/2017/01/22/ontogeny-recapitulates-phylogeny-fetal-whales-have-hindlimb-buds/">https://evolutionforskeptics.wordpress.com/2017/01/22/ontogeny-recapitulates-phylogeny-fetal-whales-have-hindlimb-buds/</a></div>