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Journal of Paleontology 91(5):960–967
limulines and the presumed role of specialization during the end of Paleozoic crisis.
Acknowledgments
We would like to thank, several institutions that have funded our research work in Tunisia. The research in 2013 was supported by the Polish Ministry of Science and Higher Education (grant number 7986/B/P01/2011/40, grant of T. Sulej and G. Niedźwiedzki). We thank R.M. Feldmann (Kent State University) and P. Gieszcz (Independent Center for Advanced Research
machinic.it) for many useful suggestions and correc- tion of English. The field study in 2014 was financed by the University of Warsaw through the Advisory Board for Student Scientific Movement (Project: 51/I/2014), the University of Warsaw Students’ Union (Project: II/539/1120/2014), the Faculty of Biology of University of Warsaw, the Department of Paleobiology and Evolution of University of Warsaw, and the Foundation of University of Warsaw. G. Niedźwiedzki is currently funded by a grant awarded to P.E. Ahlberg (Uppsala University). We would like to sincerely thank P. Walsh (University of Silesia) for many useful suggestions and linguistic correction. We are also very grateful to M. Tałanda, D. Dróżdż, J. Mermer, K. Biernacki, J. Tałanda, M. Pindakie- wicz, and A. Tobolska for their help during fieldwork in 2014. Finally, we are grateful to the UR11 ES 15 from the University of Tunisi El Manar for facilitating the two field missions organized in southern Tunisia in 2014.
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