Deep origin of the long root tuft: the oldest stalk-bearing sponge from the Cambrian Stage 3 black shale of South China
H. Yun, D. Janussen, X. Zhang, J. Reitner
The paper describes a new Cambrian sponge fossil with a long stalk, indicating an early adaptation to low-oxygen environments and a deep origin of stalk-bearing morphology in hexactinellid sponges.
bioRxiv · Apr 7, 2023Paleontology