Video S1–3, Model S1, 2 & Figure S1: Oxfordiana motturii gen. et sp. nov. supplemental information

Video S1. Animation of the isosurface-based false-coloured three-dimensional model for specimen BU 5265.1. Full 360-degree rotation on the x-axis followed by the y-axis. Scale bar = 0.5 cm [MOV format 13MB, AVI format 44MB; 1920x1080 px; 1:04 min]

Video S2. Animation of the isosurface-based false-coloured three-dimensional model for specimen BU 5265.2. Full 360-degree rotation on the x-axis followed by the y-axis. Scale bar = 0.5 cm. [MOV format 20MB, AVI format 44MB; 1920x1080 px; 1:04 min]

Video S3. Tomographic data set showing raw X-ray contrast data as produced by the I12 JEEP beamline at the Diamond Light Source for specimen BU 5265.1. Scale bar = 0.25 mm. [MOV format 42MB, AVI format 53MB; 1004x1002 px; 1:15 min]

Model S1. Zenodo hosted three-dimensional model file of BU 5265.1 isosurface-based false-coloured reconstruction. This model is saved as a ZIP compressed VAXML datasets. VAXML uses one or more STL files to define the geometry of objects that comprise the dataset, together with one VAXML file that provides metadata on the dataset as a whole, and specifies how the STL/PLY files are to be put together. Additionally, a native SPV file has been included for direct viewing in SPIERSview. We therefore recommend the free SPIERS software to view this model format (http://spiers-software.org/). Additional information on the VAXML format can be found here: http://spiers-software.org/VAXML.htm. [ZIP/VAXML format 198.4 MB; SPV format 4MB]

Model S2. Zenodo hosted three-dimensional model file of BU 5265.2 isosurface-based false-coloured reconstruction. This model is saved as a ZIP compressed VAXML datasets. VAXML uses one or more STL files to define the geometry of objects that comprise the dataset, together with one VAXML file that provides metadata on the dataset as a whole, and specifies how the STL/PLY files are to be put together. Additionally, a native SPV file has been included for direct viewing in SPIERSview. We therefore recommend the free SPIERS software to view this model format (http://spiers-software.org/). Additional information on the VAXML format can be found here: http://spiers-software.org/VAXML.htm. [ZIP/VAXML format 173.6 MB; SPV format 3MB]

Figure S1. High resolution volume rendered images from Drishti showing the anatomy of BU 5265 and BU 5266. A) 16 longitudinal virtual thin-sections through BU 5265.1 at 500 µm spacing; B) 40 transverse virtual thin-sections through BU 5265.1 at 500 µm spacing; C) 28 transverse virtual thin-sections through BU 5265.2 at 500 µm spacing; D) 38 transverse virtual thin-sections through BU 5265.3 at 500 µm spacing; E) Reconstruction of BU 5265.1 showing longitudinal view of whole specimen fragment; F) Reconstruction of thick section slide BU 52665.30, a: oblique view of slide looking from the outer surface toward the inside of the ovule near the apex, b: oblique view of the slide looking out from the inside of the ovule, c: top-down view of the slide looking towards the ovule base, d: 3D section virtually cut from the slide showing the orientation of integumentary layers. G) Reconstruction of thick section slide BU 52665.1, a: view of slide looking from the inner surface toward the outside of the ovule, b: view of the slide looking towards the inside of the ovule, c: longitudinal section through the virtual slide. H) Reconstruction of thick section slide BU 52665.38, a: outer anatomy seen looking to the ovule centre from the base, b: inner anatomy seen looking from the ovule centre towards the base, c: longitudinal section through the virtual slide. I) Reconstruction of thick section slide BU 52665.3, a: view of slide looking towards the ovule centre, b: view of slide looking from ovule centre towards the external surface, c: longitudinal section through the virtual slide. J) Reconstruction of thick section slide BU 52665.37, a: view of slide looking away from the ovule centre, b: view of slide looking towards the ovule centre, c: longitudinal section through the virtual slide. Notes: A–D) These images show the two phases of mineralization which have preserved the ovule anatomy, blue = carbonate (calcite), yellow = pyrite, each having differing x-ray attenuation characteristics; E–J) These images highlight just the pyrite within the ovule, in particular that which infills the cells. Scale bars sizes are indicated on the figure. [PNG format 76MB]