A huge mouth and no anus – this could be our earliest known ancestor
Here's the related research, "Meiofaunal deuterostomes from the basal Cambrian of Shaanxi (China)":
http://www.nature.com/nature/journal/vaop/ncurrent/full/natu...
Here's the related research, "Meiofaunal deuterostomes from the basal Cambrian of Shaanxi (China)":
http://www.nature.com/nature/journal/vaop/ncurrent/full/natu...