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. Author manuscript; available in PMC: 2019 Jan 31.
Published in final edited form as: Nat Ecol Evol. 2018 Jul 31;2(9):1501–1506. doi: 10.1038/s41559-018-0624-1

Figure 4. SrXTM virtual segmentation of aspidin spaces in Loricopteraspis dairydinglensis (NHMUK P75401) (a-c) and Tesseraspis tesselata (NHMUK P73617) (d, e).

Figure 4

Detail of orthogonal aspidin spaces pervading the trabecular walls dividing polygonal cancellae. These spaces exhibit linear morphology without ramifications, precluding interpretation that these are cell or cell process spaces (a); lateral (b), and transverse (c) views of the organisation of aspidin spaces radiating about a polygonal cancellar vacuity; Horizontal section of the middle layer of Tesseraspis tesselata showing orthogonal aspidin spaces within the trabeculae and tangled aspidin spaces at the intersection between trabeculae. Several orthogonal and tangled spaces have been segmented individually (highlighted in gold) to illustrate their linear, non-branching morphology (d), Detail of previous panel (e). Relative scale bar equals 55 μm in (a), 189 μm in (b) 160 μm in (c), 92 μm in (d) and 50 μm in (e).