Laevidentalium wiesei Sahlmann, 2012 (Scaphopoda: Dentaliida: Laevidentaliidae) – tomographic datasets

This file collection encompasses x-ray tomographic datasets for two ethanol-preserved specimens of the abyssal scaphopod Laevidentalium wiesei Sahlmann, 2012 housed in the malacological collection of the Senckenberg Research Institute and Natural History Museum Frankfurt (Frankfurt am Main, Germany; catalogue numbers SMF 373200 and SMF 366426). The animals were collected in 2022 by the SO293 (AleutBio) expedition of research vessel Sonne to the Aleutian Trench and the abyssal Bering Sea (Brandt 2022) and used in the redescription of this poorly known species. For individual SMF 366426, a VGSTUDIO MAX volume (can be opened in the free myVGL viewer) and a 3D surface model are available. Methods: Shell shape and soft body anatomy were studied by micro-computed tomography (µCT), using a Werth TomoScope XS Plus CT scanner with the following settings [scan of SMF 373200/scan of SMF 366426]: acceleration voltage 60/80 kV, emission current 180/200 µA, exposure time 666 ms, voxel size 6.29/21.81 µm, number of images per revolution 2,000/1,000. Prior to scanning, specimens had been contrasted in a solution of 0.3% phosphotungstic acid and 3% dimethyl sulfoxide in 95% ethanol (Senckenberg Ocean Species Alliance (SOSA) et al. 2024) for 27 days. The 3D shell reconstruction of SMF 366426 was obtained by first cropping the raw tomographic dataset in Avizo3D (v. 2024.1; Thermo Fisher Scientific) and postprocessing the resultant file in VGSTUDIO MAX (v. 2024.3; Volume Graphics). References Brandt, A. (2022). SO293 AleutBio (Aleutian Trench Biodiversity Studies). Cruise Report/Fahrtbericht, Cruise No. SO293, 24.07.2022 – 06.09.2022, Dutch Harbor (USA) – Vancouver (Canada). 209 pp. https://doi.org/10.48433/cr_so293 Senckenberg Ocean Species Alliance (SOSA), Brandt A., Chen C., Engel L., Esquete P., Horton T., Jażdżewska A.M., Johannsen N., Kaiser S., Kihara T.C., Knauber H., Kniesz K., Landschoff J., Lörz A.-N., Machado F.M., Martínez-Muñoz C.A., Riehl T., Serpell-Stevens A., Sigwart J.D., Tandberg A.H.S., Tato R., Tsuda M., Vončina K., Watanabe H.K., Wenz C., Williams J.D. (2024). Ocean Species Discoveries 1–12 — A primer for accelerating marine invertebrate taxonomy. Biodiversity Data Journal 12: e128431. https://doi.org/10.3897/BDJ.12.e128431