Possible drill holes and pseudoborings in obolid shells from the Cambrian/Ordovician boundary beds of Estonia and the uppermost Cambrian of NW Russia

Author:

Vinn Olev1ORCID,Holmer Lars E.2ORCID,Wilson Mark A.3,Isakar Mare4,Toom Ursula5

Affiliation:

1. Department of Geology, Institute of Ecology and Earth Sciences, University of Tartu, Tartu, Estonia

2. Department of Earth Sciences, Palaeobiology, Uppsala University, Uppsala, Sweden

3. Department of Earth Sciences, The College of Wooster, Wooster, USA

4. Geological Collections of Natural History Museum, University of Tartu, Tartu, Estonia

5. Department of Geology, Tallinn University of Technology, Tallinn, Estonia

Funder

Eesti Teadusagentuur

Vetenskapsrådet

Publisher

Informa UK Limited

Subject

General Agricultural and Biological Sciences

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