作者: J. P. Wilson , P. A. Cohen , A. Bradley , A. H. Knoll , J. P. Grotzinger
DOI: 10.1666/09-040R.1
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摘要: Abundant tubular macrofossils occur in finely laminated siltstones and shales of the 548–542 Ma Schwarzrand Subgroup, Nama Group, Namibia. The Nama tubes occur in both the …