RT Journal Article T1 Bivalve bioerosion in Cretaceous-Neogene amber around the globe, with implications for the ichnogenera Teredolites and Apectoichnus A1 Mayoral Alfaro, Eduardo A1 Gámez Vintaned, José Antonio A1 Wisshak, Max A1 Neumann, Tristan A1 Uchman, Alfred A1 Nel, André AB Amber samples with bivalve borings from six localities around the world, ranging in age from Hauterivian to Miocene, have been studied. The possible assignment to Teredolites or Gastrochaenolites is discussed considering the type of substrate as an ichnotaxobase. It is proposed to regard amber or similar resins as a variant of xylic substrates and to maintain the separation between the two ichnogenera and their different paleoecologicalimplications. The amber borings are assigned to Teredolites clavatus Leymerie, 1842 and Apectoichnus longissimus (Kelly and Bromley, 1984), respectively. The presence of bioglyphs in a few borings suggests a mechanical production process, with pholadid bivalves such as Martesia preserved inside many of the samples representingthe producer. In general, the amber-producing trees mostly grew along a forested coastline, where they were occasionally flooded by seawater or even transported from rivers into the sea and later deposited. SN 0031-0182 YR 2019 FD 2019-10-19 LK https://hdl.handle.net/10272/24435 UL https://hdl.handle.net/10272/24435 LA eng NO Mayoral, E., Santos, A., Vintaned, J. A. G., Wisshak, M., Neumann, C., Uchman, A., & Nel, A. (2020). Bivalve bioerosion in Cretaceous-Neogene amber around the globe, with implications for the ichnogenera Teredolites and Apectoichnus. In Palaeogeography, Palaeoclimatology, Palaeoecology (Vol. 538, p. 109410). Elsevier BV. https://doi.org/10.1016/j.palaeo.2019.109410 NO Research Group RNM276 of the Junta de Andalucía (Spain) and the Science and Technology Research Centre, University of Huelva.Support from Universiti Teknologi PETRONAS (Malaysia)EU ColParSyst Program (2004) DS Repositorio Institucional de la Universidad de Huelva RD 30 may 2026