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Ortega, R. P.. 2021. “Ethical controversy swirls around shark fossil from Mexico.” Science, 372: 332-333. DOI: 10.1126/science.372.6540.332

Shimada, K., P. J. Currie, E. Scott, and S. S. Sumida. 2014. “The greatest challenge to 21st century paleontology: when commercialization of fossils threats the science. Palaeontologia Electronica, 17: 1E: 4 p; palaeo-electronica.org/content/2014/691-great-threat-in-21st-century