New Silurian aculiferan fossils reveal complex early history of Mollusca

Accompanying data for: New Silurian aculiferan fossils reveal complex early history of Mollusca

Synchrotron and physical-optical (serial-grinding) tomography datasets and 3D models for two specimens; the holotypes of Punk ferox and Emo vorticaudum (Mollusca, Aculifera) from the Silurian of Herefordshire, UK.

Specimens are accessed in the Oxford University Museum of Natural History, and are:
OUMNH PAL-C.29644 (Holotype of Punk ferox)
OUMNH PAL-C.36023 (Holotype of Emo vorticaudum)

Data comprises the following ZIP archives:

1) Emo_vorticaudum_model.zip, Punk_ferox_model.zip.

Mesh-models constructed from datasets using the SPIERS software package, http://spiers-software.org. These are in VAXML format (see also http://spiers-software.org) - they can be viewed using the SPIERSview element of the SPIERS software suite, or alternatively the STL files that comprise the model can be imported into any other mesh-viewing software.

Emo_vorticaudum_model.zip contains:
- 'Emo_vorticaudum.vaxml': VAXML format metadata file
- folder 'Emo_vorticaudum_stl': contains 10 STL format mesh-model files

Punk_ferox_model.zip contains:
- 'Punk_ferox.vaxml': VAXML format metadata file
- folder 'Punk_ferox_stl': contains 10 STL format mesh-model files

2) Synchrotron.zip

Phase-contrast tomograms representing specimen-scans. Files are in greyscale BMP format, 1900x1900 pixels in resolution. Voxel-size is 6.5 µm for all datasets.

Synchrotron.zip contains:
- folder 'Emo': contains 3040 tomograms, Emo_0000.bmp - Emo_3039.bmp for OUMNH PAL-C.36023
- folder 'Punk': contains phase-contrast tomograms representing two overlapping specimen-scans of OUMNH PAL-C.29644
-- subfolder 'PartA': contains 2980 tomograms, Punk_A_0000.bmp - Punk_A_2979.bmp.
-- subfolder 'PartB': contains 1960 tomograms, Punk_B_0000.bmp - Punk_B_1959.bmp.

3) Physical-optical.zip

Tomograms from physical-optical tomography, registered and cropped to ROI. Images are in RGB24 bmp format. Datasets for each specimen are split into two halves (part and counterpart). In all four datasets, there are 71 pixels/mm (pixel size = 14.1 µm), and tomogram spacing is 20 µm.

Physical-optical.zip contains:
- folder 'Emo': part and counterpart tomograms for OUMNH PAL-C.36023.
-- subfolder 'PartA': contains 187 tomograms, Emo_A_PO_004.bmp - Emo_A_PO_190.bmp. These are 1000 x 526 pixels in resolution.
-- subfolder 'PartB': contains 207 tomograms, Emo_B_PO_004.bmp - Emo_B_PO_210.bmp. These are 1094 x 558 pixels in resolution.

- folder 'Punk': part and counterpart tomograms for OUMNH PAL-C.29644.
-- subfolder 'PartA': contains 416 tomograms, Punk_A_PO_010.bmp - Punk_A_PO_425.bmp. These are 1164 x 343 pixels in resolution.
-- subfolder 'PartB': contains 305 tomograms, Punk_B_PO_001.bmp - Punk_B_PO_305.bmp. These are 1135 x 598 pixels in resolution.