Nomenclature of each specimen follows the rule described in Annex 1.1. Images are grouped following the initial files names used during this work, meaning that the number of each “MOR” group (1, 2, 3, 4, etc.) corresponds to digits 5 and 6 of the name of the specimen, as defined in Annex 1.1.Specimens used in this part of the study originate only from boreholes DSDP 11-98 and ODP 166-1006A.Mor_aperture: groups the contours of the aperturesMor_spi: groups the rough images of specimens in spiral view. Mor_umb groups the rough images of specimens in umbilical position and their contours after rotation.Images in Mor_aperture are opened with ImageJ