Tag Archive for 'Acorn worm'

An artist’s impression of Yujingia glutenotunica. Image credit: He et al., doi: 10.1016/j.cub.2026.08.053.

Early Cambrian Fossil Rewrites Starfish Family Tree

Oct 20, 2026 by Enrico de Lazaro

A 518-million-year-old ambulacrarian fossil from China suggests that the common ancestor of starfish and their relatives was not a burrowing worm; it was...

An anatomical illustration from Johannes Sobotta’s Human Anatomy, 1908.

Human Brain is Two Organs Fused Together, Study Suggests

Sep 21, 2026 by Enrico de Lazaro

Scientists have long treated the brain as a single organ that grows from one pool of early cells. Stanford University neuroscientist Kyle Loh and colleagues...

Reconstruction of the Jiangchuan Biota. Image credit: Xiaodong Wang.

Ediacaran Fossils from China Rewrite Timeline of Animal Evolution

Apr 6, 2026 by Enrico de Lazaro

An assemblage of more than 700 Ediacaran fossils from the end of the Ediacaran period indicates that key animal groups — including early relatives...