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Fig. 3

ID

ZDB-FIG-230202-24

Publication

Huysseune et al., 2021 - The conundrum of pharyngeal teeth origin: the role of germ layers, pouches, and gill slits

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Fig. 3

Oropharyngeal epithelium, teeth, and dermal denticles in chondrichthyans. (A) Scyliorhinus canicula; sagittal section of the lower jaw of a 85 mm embryo, showing skin (= dermal) denticles (arrowheads), and the dental lamina with developing teeth (arrows). Scale bar = 100 ?m. (B) Scyliorhinus canicula; larger magnification of the early dental lamina with a developing tooth in a 85 mm embryo. Scale bar = 20 ?m. (C, D) Scyliorhinus canicula; sagittal section of a tooth anlage in the lower jaw with the invading dental lamina (C) compared to the anlage of a dermal denticle (D) in the same 50 mm embryo. Outer (ode) and inner dental epithelium (ide), the basal lamina of the enamel organ (arrowhead) and the mesenchymal condensation that will give rise to the odontoblasts (od) characterise the anlagen of teeth and dermal denticles. Scale bars = 25 ?m. (E, F) Squalus acanthias; two stages of development of a ?placoid scale? (from Cook & Neal, 1921). n'v. = nerve; pl. sc. = placoid scale. (G, H) Mustelus sp.; two stages of development of a ?mucous membrane denticle? (from Peyer, 1968).

Expression Data

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Antibody Labeling

Phenotype Data

Phenotype Detail

Acknowledgments

This image is the copyrighted work of the attributed author or publisher, and ZFIN has permission only to display this image to its users. Additional permissions should be obtained from the applicable author or publisher of the image. Full text @ Biol. Rev. Camb. Philos. Soc.