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. 2021 Mar 31;7(14):eabb9113. doi: 10.1126/sciadv.abb9113

Fig. 2. Comparing the state-of-the-art imaging technology of fossil osteocyte lacunae.

Fig. 2

(A) Histological thin section of bone in the osteostracan T. mammillata (MB.f.TS.463), imaged with transmitting light microscopy showing osteocyte lacunae and canaliculi; scale bar, 100 μm. (B) SEM of the etched surface of the dermal bone of Bothriolepis trautscholdi (MB.f.9188a) produced this image of the internal surface of the fossil osteocyte lacunae, and the small black holes represent the emanating canaliculi; scale bar, 10 μm. (C) Synchrotron tomography of bone of B. trautscholdi (MB.f.9188a) with the vasculature and osteocytes segmented; scale bar, 0.4 mm. (D) Close-up of tomography in (C) showing the resolution of the osteocyte lacunae volumes; scale bar, 10 μm. bs, bone sample; vs, vasculature channels.