小组提出了明显的软体岩特征的地形学解释，并确定了与附近地层中同时期的腔体在解剖学上的显著相似性。他们对水龙的重新解释是一个早期分化的总理体，有助于巩固这个长期存在问题的海绵样后生动物群体的早期进化模型。
据了解，寒武纪的进化辐射以其奇异和不熟悉的身体形式的丰富而闻名，其中许多阐明了主要动物群体的早期祖先。中国云南寒武纪第4期的棘覆盖石杉化石被解释为介乎于软体动物和它们的浮游动物祖先之间。他们的新材料挑战了这种解释。
附：英文原文
Title: Shishania is a chancelloriid and not a Cambrian mollusk
Author: Jie Yang, Wei Li, Ai-lin Chen, Kun-sheng Du, Xiao Peng, Yu Wang, Xi-guang Zhang, Martin R. Smith
Issue&Volume: 2025-05-08
Abstract: The Cambrian evolutionary radiation is noted for its profusion of bizarre and unfamiliar body forms, many of which illuminate the early ancestry of major animal groups. The spine-covered fossil Shishania aculeata (Cambrian Stage 4, Yunnan, China) has been interpreted as intermediate between mollusks and their lophotrochozoan ancestors. Our new material challenges this interpretation. We propose taphonomic explanations for apparent molluscan features and instead identify prominent anatomical similarities to coeval chancelloriids from nearby strata. Our reinterpretation of Shishania as an early-diverging chancelloriid helps to consolidate a model for the early evolution of this enduringly problematic group of sponge-like metazoans.
DOI: adv4635
Source: https://www.science.org/doi/10.1126/science.adv4635