4 ms·
A huge mouth and no anus – this could be our earliest known ancestor
- saycheese 10y agoHere's the related research, "Meiofaunal deuterostomes from the basal Cambrian of Shaanxi (China)": http://www.nature.com/nature/journal/vaop/ncurrent/full/nature21072.html http://www.nature.com/nature/journal/vaop/ncurrent/full/natu...