Fig. 7 in Taphonomy of the earliest Cambrian linguliform brachiopods

Fig. 7. Analyses of a juvenile specimens of Recent lingulid brachiopod Lingula anatina Lamark, 1801 from Australia. A. TEM image of juvenile specimen. Longitudinal section through the mid juvenile shell and underlying mantle tissue. The shell material is unstructured apart from a more electron dense outer layer. B. Light microscope image of a ventral view of a pelagic juvenile specimen with 7 pairs of tentacles. Specimen in liquid embedding resin after glutardialdehyde and OsO4 fixation. C–E. Elemental mapping of area shown in G: Fe (C), Ca (visible Ca granules) (D), Os (E). F. Point analysis of the whitish electron−denser layer (area shown in G), 1.8 µm thick of the shell of G. G. BSD image of a longitudinal section.