Micro-CT data of Protosiphonorhinus patrickmuelleri (ZFMK MYR13870)

µCT and SR-µCT data of Holotype of Protosiphonorhinus patrickmuelleri Moritz, Wipfler & Wesener, 2025 (ZFMK MYR13870/BuB1991).

Material studied: 1 ♂ holotype, ZFMK MYR13870, preserved in amber from the Burmese Kachin region, Hukawng valley. Exported before 2017, donated from the vast amber collection of Patrick Müller (Käshofen, Germany, BuB1991).

Data provided as 8bit-TIFF Stacks.

ZFMK-MYR13879_BuB1991_µCT: CT data were obtained using a Bruker SKYSCAN 1272 with the following settings: source voltage: 43 kV, source current: 200 µA, 360° rotation, rotation steps: 0.165°, exposure time: 900 ms, frame averaging: 5, random movement: 15, and pixel size: 1.100686 µm. The projections were reconstructed with NRecon.

ZFMK MYR13870_BuB1991_Sr-µCT: The specimen was measured at DESY (Deutsches Elektronen-Synchrotron – DESY, Hamburg, Germany) storage ring PETRA III, at Beamline P05, which is operated by Hereon (Geesthacht, Germany), during beamtime 11012373 in October 2021. Measurements were performed with an energy of 18 keV, a sample-detector distance of 75 mm, an effective pixel size of 0.458047 µm, and 3501 projections using a 20 MP CMOS camera system. Reconstruction was performed in Matlab (MathWorks) and Astra Toolbox in a custom reconstruction pipeline using filtered back-projection. Data were binned three times, resulting in a voxel size of 1.37414 µm.

For details see log-files within zip-folders and Moritz et al. 2025.

Supplementary data to: 

Moritz L, Wipfler B, Wesener T (2025) Protosiphonorhinus patrickmuelleri gen. et sp. nov., the first fossil member of the sucking millipede family Siphonorhinidae (Colobognatha, Siphonophorida) described from Cretaceous Myanmar amber. Evolutionary Systematics 9(1): 77-86. https://doi.org/10.3897/evolsyst.9.147291