Antarctic Cretaceous and Paleogene crinoids

PUBLICATION — Poatskievick-Pierezan, B., Salamon, M. A., Manríquez Márquez, L., Schneider, B. C., Hunnig Bom, M. H., do Monte Guerra, R., Scalise Horodyski, R., Diemer Kochhann, K. G., Fauth, G., & Gorzelak, P. 2026. Linking the Cretaceous and the Paleogene: Shallow-water stalked crinoids from Seymour Island reveal continuous Antarctic fossil record. Gondwana Research, 154, 363–370. doi.org/10.1016/j.gr.2026.01.010

Research conducted on Seymour Island has shown that stalked crinoids continuously inhabited the shallow seas of Antarctica from the Late Cretaceous through the Paleogene. This discovery fills a gap in the fossil record and demonstrates that this group survived the Cretaceous–Paleogene extinction event, maintaining the ability to function in shallow shelf marine environments despite increased predation pressure.