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1 January 2018 Globusphyton Wang et al., an Ediacaran Macroalga, Crept on the Seafloor in the Yangtze Block, South China
Ye Wang, Yue Wang
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Abstract

The Ediacaran genus Globusphyton Wang et al., only including one species G. lineare Wang et al., is a eukaryotic macroalga in the Wenghui biota from black shale of the upper Doushantuo Formation (ca. 560–551 Ma) in northeastern Guizhou, South China. It was assigned as one of the significant fossils in the assemblage and biozone divisions in the middle-late Ediacaran Period. Morphologically, Globusphyton is composed of several structural components, displaying that it had tissue differentiation to serve various bio-functions. Its prostrate stolon, a long ribbon bundled by unbranching filaments, crept by holdfasts on the seafloor. Its pompon-like thalli, the circular to oval thallus-tuft composed of many filamentous dichotomies, may have served for photosynthesis. The fusiform ribbon-tubers, the caked and expanded segments of the ribbon, may have served to sustain the growth of the thalli and the possible holdfasts. The zigzag-shaped stolon and pompon-like thalli of Globusphyton, in a relatively low-energy environment, crept on the surface of the muddy sediments and were suspended in the water column, respectively. When water currents occurred occasionally, all or part of its body was probably suspended in the water column to be deformed in capricious patterns.

© by the Palaeontological Society of Japan
Ye Wang and Yue Wang "Globusphyton Wang et al., an Ediacaran Macroalga, Crept on the Seafloor in the Yangtze Block, South China," Paleontological Research 22(1), 64-74, (1 January 2018). https://doi.org/10.2517/2017PR005
Received: 8 April 2017; Accepted: 1 May 2017; Published: 1 January 2018
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KEYWORDS
Ediacaran Wenghui biota
macroscopic alga
pompon-like thallus
prostrate stolon
South China
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