The occurrence of Dickinsonia in non-marine facies

Estudios Geologicos

A. V. Maslov¹  A. V. Kolesnikov²  N. I. Bobkov³  D. V. Grazhdankin³ 

[1] Geological Institute, Russian Academy of Sciences - Zavaritsky Institute of Geology and Geochemistry of the Ural Branch of the Russian Academy of Sciences;Trofimuk Institute of Petroleum Geology and Geophysics of Siberian Branch of Russian Academy of Sciences - Geological Institute, Russian Academy of Sciences - Moscow State Pedagogical University;Trofimuk Institute of Petroleum Geology and Geophysics of Siberian Branch of Russian Academy of Sciences - Novosibirsk State University;

关键词: dickinsonia;    soft-bodied metazoan;    continental environments;    ediacaran;   

DOI  :  10.3989/egeol.43587.551

来源: DOAJ

【 摘 要 】

Dickinsonia in the central Urals occurs in a succession transitional from marginal marine to non-marine. Even within this sequence Dickinsonia appears to be restricted to the least marine facies interpreted as a coastal lagoon surrounded by tidal flats. Another puzzling aspect is the complete absence of other Ediacaran taxa that are usually found together with Dickinsonia in other fossil localities. In fact, the Sinii Kamen Member of the Cherny Kamen Formation yielded an assemblage of Ediacaran macrofossils including aspidellamorph and mawsonitomorph holdfasts, frondomorphs, palaeopascichnids, and concentric ring structures of microbial origin; however, fossils of Dickinsonia have never been found in this association.

【 授权许可】

Unknown