Field , Daniel J., Juan Benito, Sarah Werning, Albert Chen, Pei-Chen Kuo, Abi Crane, Klara E. Widrig, Daniel T. Ksepka, and John W.M. Jagt. “Remarkable Insights into Modern Bird Origins from the Maastrichtian Type Area (north-East Belgium, South-East Netherlands)”. Netherlands Journal of Geosciences 103 (May 13, 2024). Accessed March 31, 2026. https://njgjournal.nl/index.php/njg/article/view/10838.