During Hauterivian-Barremian times, local coral biostromes, possibly patch reefs, developed within shallow marine lagoons fringing Early Cretaceous volcanoes in Peru. The dominant coral is Stylina columbaris n. sp., which is similar to European stylinid species of Late Jurassic and Early Cretaceous age having sixfold septal plans. The biostrome is part of the Atocongo Formation, Lima Group, exposed at Perico Hill (Cerros Perico) about 95 km south of Lima.--Modified journal abstract.

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