Thanks for downloading this package. It is divided into three sub-packages, 1_softwares_set, 2_RTI_set, and a 3_paper_model_set. ---- 1_softwares_set sub-package contains a number of files currently available at http://culturalheritageimaging.org/What_We_Offer/Downloads/. They are provided here to ensure long-term archiving, and reading of our dataset. In details, this sub-package contains: RTIbuilder_2_0_2_MacOs Installation package for RTIbuilder software under Mac operating system RTIbuilder_2_0_2_WinOs Installation package for RTIbuilder software under Windows operating system RTIViewer-1.1.0_MacOs Installation package for RTIviewer software under Mac operating system RTIViewerSetup-1.1.0-WinOs_x32 Installation package for RTIviewer software under Windows operating system, 32 bits RTIViewerSetup-1.1.0-WinOs_x64 Installation package for RTIviewer software under Windows operating system, 64 bits ---- 2_RTI_set sub-package contains two *.rti files of the specimen YPM IP 001019 (b side; Yale Peabody Museum; holotype of Protelytron permianum, Lower Permian, USA), together with their associated bookmarks files. In details, this sub-package contains: YPM_IP_001019b_1overview This *.rti file is an overview of the complete specimen. The associated bookmarks file (*.xmp) is YPM_1019b_1overview_rti YPM_IP_001019b_2detailHW This *.rti file is a close-up view of the left hind wing of specimen. The associated bookmarks file (*.xmp) is YPM_1019b_2detailHW_rti ---- 3_paper_model_set This set contains our Fig. 3 as pdf and a video tutorial providing guidelines on how to prepare and operate the paper model.