Musculature of Cambrian Fossil Embryo Markuelia

doi:10.13209/j.0479-8023.2020.118

Acta Scientiarum Naturalium Universitatis Pekinensis ›› 2021, Vol. 57 ›› Issue (2): 390-394.DOI: 10.13209/j.0479-8023.2020.118

Musculature of Cambrian Fossil Embryo Markuelia

LIU Teng¹, DUAN Baichuan², LIU Jianbo¹, DONG Xiping^1,†

1. School of Earth and Space Sciences, Peking University, Beijing 100871 2. Key Laboratory of Marine Geology and Metallogeny, First Institute of Oceanography, Ministry of Natural Resource, Qingdao 266061

Received:2020-02-05 Revised:2020-03-14 Online:2021-03-20 Published:2021-03-20
Contact: DONG Xiping, E-mail: dongxp(at)pku.edu.cn

寒武纪化石胚胎Markuelia的肌肉组织

刘腾¹, 段佰川², 刘建波¹, 董熙平^1,†

1. 北京大学地球与空间科学学院, 北京 100871 2. 自然资源部第一海洋研究所海洋地质与成矿作用重点实验室, 青岛 266061

通讯作者: 董熙平, E-mail: dongxp(at)pku.edu.cn
基金资助:
国家自然科学基金(41372015, 41406057)资助

Abstract

Abstract:

The authors used synchrotron radiation X-ray tomographic microscopy (SRXTM) to study fossil embryos of M. hunanensis from the Wangcun Lagerst?tte. The studied specimen shows the preservation of palisade-shaped structures underneath the cuticle of the head and tail. The 3D reconstruction of these structures reveals that the palisade-shaped structures are ring-like in shape with bilaterally symmetrical elongation on both sides. We interpreted the palisade-shaped structures as possible musculatures of the pharynx in the head and at the base of the spines in the tail, respectively. Further investigation of the musculatures suggests that these animals may have been small benthic species that live between crevices in the soft sediment, and may be active predators.

Key words: fossil embryos, soft-part anatomy, musculature, Markuelia, Cambrian

摘要：

利用同步加速器辐射X射线断层显微技术(SRXTM), 研究湖南省王村化石库的化石胚胎Markuelia hunanensis。所研究的标本保存了头部和尾部表皮下的栅栏状结构, 对这些结构进行三维重建后, 发现栅栏结构为环形, 呈两侧对称状排列。将头部和尾部的栅栏结构分别解释为可能的咽部和尾刺基部的肌肉组织。对可能的肌肉组织结构的进一步研究表明, Markuelia hunanensis最早的胚后阶段可能是小型底栖动物, 生活在泥砂缝隙之间, 并且可能是活跃的捕食者。

关键词: 化石胚胎, 软组织解剖学, 肌肉组织, Markuelia, 寒武纪

LIU Teng, DUAN Baichuan, LIU Jianbo, DONG Xiping. Musculature of Cambrian Fossil Embryo Markuelia[J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2021, 57(2): 390-394.

刘腾, 段佰川, 刘建波, 董熙平. 寒武纪化石胚胎Markuelia的肌肉组织[J]. 北京大学学报自然科学版, 2021, 57(2): 390-394.

Add to citation manager EndNote|Ris|BibTeX

URL: https://xbna.pku.edu.cn/EN/10.13209/j.0479-8023.2020.118

https://xbna.pku.edu.cn/EN/Y2021/V57/I2/390

[1]	LI Jiayi, DONG Lin, SHI Kaibo. Fossil Record of Oscillatoriaceae from Cambrian Series 2 Xiaoerblaq Formation in Northwestern Tarim Basin, China [J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2024, 60(3): 475-488.
[2]	LIU Xuan, CHEN Chunhan, YANG Runyu, DONG Lin. New Discovery of Macroscopic Cone Fossils from the Cambrian Series-2 Shuijingtuo Formation of Hubei, China [J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2022, 58(4): 644-654.
[3]	ZHANG Peng;HOU Guiting;PAN Wenqing;QI Yingmin. Structural Stress Field Simulation for Upper-Middle-Lower Cambrian in Tazhong Area and Forecast of the Fracture [J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2015, 51(3): 463-471.
[4]	ZHAO Pengyun,LIU Bo,QIN Shan. The Third Series of Cambrian Oolitic Limestones and Their Sedimentary Environment in Beijing, Tianjin, Shanxi and Hebei Provinces, North China [J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2011, 47(5): 825-830.
[5]	DANG Haowen,LIU Jianbo,YUAN Xinpeng. Microbialites in the Middle Cambrian Qinjiamiao Group in Xingshan, Hubei Province: Implication for Paleoenvironmental Reconstruction [J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2009, 45(2): 289-298.
[6]	CHEN Fang,DONG Xiping. Middle Cambrian Highly Modified Sponge Spicules from Western Hunan，South China [J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2008, 44(6): 883-889.
[7]	ZHU Caifa,LI Guoxiang,DONG Xiping. Ornamented Tubes from Middle Cambrian of Huayuan, West Hunan, China [J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2004, 40(2): 193-202.
[8]	ZHU Caifa,DONG Xiping,CHEN Meng'e. Chancelloriids from Late Middle Cambrian of Huayuan, Hunan, South China [J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2003, 39(5): 716-726.
[9]	GUO Liyu,GAN Zhimao,ZHANG Guowei,DU Yuansheng. The Seismic Stratigraphic Analysis of Taowan Conglomerate in Luonan, Shaanxi [J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2002, 38(4): 497-503.
[10]	NI Zhiyao,MO Huaiyi. Geochemistry and Age of the Precambrian Metamorphic Sedimentary Rock in the Mianning, Sichuan province [J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 1998, 34(6): 783-792.

Musculature of Cambrian Fossil Embryo Markuelia

寒武纪化石胚胎Markuelia的肌肉组织

PDF

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 10

Recommended Articles

Metrics