Confocal data of Clessidromma palmeri, holotype, NIGP166270

This dataset contains the raw confocal laser scanning microscopy (CLSM) slices for the holotype of <em>Clessidromma palmeri</em> (NIGP166270) from mid-Cretaceous Burmese amber. This dataset is associated with the publication "Revisiting the morphology of the Cretaceous ommatid beetle <em>Clessidromma palmeri</em> (Coleoptera: Archostemata: Ommatidae)" (DOI:10.11606/1807-0205/2021.61.95). Confocal images were obtained with a Zeiss LSM710 confocal laser scanning microscope, using 488 nm Argon laser excitation line. Both original CZI files and exported TIFF stacks are provided.