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Fig. 6 | Zoological Letters

Fig. 6

From: Growth and mineralogy in dental plates of the holocephalan Harriotta raleighana (Chondrichthyes): novel dentine and conserved patterning combine to create a unique chondrichthyan dentition

Fig. 6

Harriotta raleighana (Rhinochimeridae; Holocephali; Chondrichthyes). Microstructure of lingual tritor with optical microscopy to illustrate tissue composition. a–f Nomarsky optics of tritoral tissue (tri), a, b at the oral surface (os), c–f deeper in at the vascular surface (vas) to compare with ovoids (Fig. 3). Dark areas are a mass of tubules (tu) branching (E, F) from very large cell body spaces (cbs) running far into the hypermineralized region, in b, e, f finest tubules are seen resolved at these magnifications. c earlier stage of tritor mineralization at the forming surface where tubules run into an opaque mass of mineral and vesicles, or saccules, and wide tubules, full of the pre-mineralization phase material (see Fig. 10a, b, c, d, e, f, g, h and i)

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Zoological Letters

ISSN: 2056-306X

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