Early Miocene coral reef-associated bryozoans from Colombia. Part II: “Ascophora” Cheilostomatida Flórez Romero, Diana Paola Di Martino, Emanuela Ramalho, Laís V. We thank P. Zapata for collecting the coral samples (Colciencias Project 727756933195); J.C. Braga and C. Jaramillo for their comments and support; R. Cuffey and P. Bock for helping with the bibliography; J. Souto, C. López-Fé, and L.M. Vieira for taxonomic advice; Corporación Geológica ARES for the logistics and the Wayúu community for the guide in field. We are grateful for the support of Ecopetrol S.A., STRI, University of Zurich, Universidad del Norte, NSF (Grant EAR 0957679), National Geographic Society, Anders Foundation, 1923 Fund, and G.D. and J. Walston Johnson during the expeditions. The research group of the Junta de Andalucía RNM 190 supported SEM work and the Universidad de Granada the open access fees. PF was funded by the Colciencias scholarship Doctorados en el Exterior 728. EDM was funded by the Research Council of Norway grant 314499. We are grateful to the reviewers, J. López-Gappa and B. Berning, and to the Associate Editor, P.D. Taylor, for their valuable comments that greatly improved the first submitted version of this manuscript. Bryozoans are common and diverse in fossil and modern coral reefs. However, studies of bryozoans in ancient reefs are generally limited, and even less is known about fossil bryozoan faunas associated with coral reefs in the Caribbean region. This is the second contribution describing the bryozoan assemblage from the early Miocene (Aquitanian) reefs of the Siamaná Formation in the La Guajira Peninsula, southern Caribbean. Here, we describe and illustrate 17 species of ascophoran-grade cheilostomes, including one new genus and three new species, Ditaxiporina colombiana n. sp., Poricella paulae n. sp., and Cycloavicularia parva n. gen. n. sp. Of the remaining fourteen taxa left in open nomenclature, one is considered confer and three affinis to species previously described, one is identified at family level, and nine at genus level. The Siamaná bryozoan fauna differs in species and colony-form composition from those associated with other paleoenvironments from Oligocene and Miocene localities of North America, the Caribbean, and Brazil. 2021-11-26T11:52:40Z 2021-11-26T11:52:40Z 2021-10-29 info:eu-repo/semantics/article Flórez, P., Di Martino, E., & Ramalho, L. (2021). Early Miocene coral reef-associated bryozoans from Colombia. Part II: “Ascophora” Cheilostomatida. Journal of Paleontology, 1-30. [doi:10.1017/jpa.2021.94] http://hdl.handle.net/10481/71786 10.1017/jpa.2021.94 eng http://creativecommons.org/licenses/by/3.0/es/ info:eu-repo/semantics/openAccess Atribución 3.0 España Cambridge University Press