Figure 5. Batomorphii enameloid. A, B in Chondrichthyan tooth enameloid: past, present, and future

Figure 5. Batomorphii enameloid. A, B, Hypsobatis weileri, transverse section etched 5 s in 10% HCl. A, general view of the thin SCE. B, inner part of the enameloid layer, with crystallites showing a slight preferential orientation normal to the occlusal surface. C, D, Rhombodus binkhorsti, transverse section etched 5 s in 10% HCl. C, general view of the thin SCE. D, detail of the SCE. E, Leidybatis jugosus, transverse section etched 5 s in 10% HCl. SCE forming thick pillars extending far into the dentine layer, with patches of dentine fully enclosed in the enameloid (arrows). F, G, Belemnobatis sp., transverse section etched 5 s in 10% HCl. F, enameloid on the lingual face of the crown. G, detail of the enameloid layer at the level of the transverse crest. H, I, J, Parapalaeobates cf. atlanticus, transverse section etched 5 s in 10% HCl. H, enameloid microstructure showing the RBE. I, detail of the randomly oriented crystallites forming the outer SCE. J, general view of the enameloid at the level of the crown ornamentation. K, L, Ptychotrygon sp., transverse section etched 5 s in 10% HCl. K, detail of the RBE. L, detail of the SCE.Published as part of <i>Enault, Sébastien, Guinot, Guillaume, Koot, Martha B. & Cuny, Gilles, 2015, Chondrichthyan tooth enameloid: past, present, and future, pp. 549-570 in Zoological Journal of the Linnean Society 174 (3)</i> on page 562, DOI: 10.1111/zoj.12244, <a href="http://zenodo.org/record/10106794">http://zenodo.org/record/10106794</a&gt

Chondrichthyan tooth enameloid: past, present, and future

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Figure 1 in Chondrichthyan tooth enameloid: past, present, and future

Figure 1. Schematic organization of a typical selachimorph tooth illustrating the various tissues composing the enameloid cover.Published as part of <i>Enault, Sébastien, Guinot, Guillaume, Koot, Martha B. & Cuny, Gilles, 2015, Chondrichthyan tooth enameloid: past, present, and future, pp. 549-570 in Zoological Journal of the Linnean Society 174 (3)</i> on page 555, DOI: 10.1111/zoj.12244, <a href="http://zenodo.org/record/10106794">http://zenodo.org/record/10106794</a&gt

Figure 4. Selachimorpha enameloid. A, P in Chondrichthyan tooth enameloid: past, present, and future

Figure 4. Selachimorpha enameloid. A, P. pockrandti, radial furrows near the SCE, transverse section etched 5 s in 10% HCl. B, P. jurensis, lingual ornament made of SCE, transverse section etched 5 s in 10% HCl. C, Sphyrna sp., cutting edge showing bundles of the PBE oriented normal to the axis of the cutting edge, transverse section etched 5 s in 10% HCl. D, Squatina sp., cutting edge showing bundles of the PBE oriented normal to the axis of the cutting edge, transverse section etched 5 s in 10% HCl.Published as part of <i>Enault, Sébastien, Guinot, Guillaume, Koot, Martha B. & Cuny, Gilles, 2015, Chondrichthyan tooth enameloid: past, present, and future, pp. 549-570 in Zoological Journal of the Linnean Society 174 (3)</i> on page 560, DOI: 10.1111/zoj.12244, <a href="http://zenodo.org/record/10106794">http://zenodo.org/record/10106794</a&gt