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Fig. 4 | Zoological Letters

Fig. 4

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. 4

Harriotta raleighana (Rhinochimeridae; Holocephali; Chondrichthyes). Microstructure of all dentine tissue, using Nomarsky optical methods to illustrate cellular composition. a–d outer dentine (od) and labial surface with cell body spaces (lab.s, cbs), tubules enter from this surface and ramify to link with inner dentine (B, D, id), cell body spaces of inner dentine send tubules (D, cbs, tub) to link with outer dentine. d inner dentine matrix has oblique orientation of fibres, from birefringence in Nomarsky (C, D; od, id) shows a sling of collagen fibres to link with the trabecular dentine (td, E, F). e, f ovoids in mature stages surrounded by vascular canals (vas) crossing the capsular tissue of the trabecular dentine and linked with very large cell body spaces (cbs) providing the source for multitudinous tubules entering the ovoids

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Zoological Letters

ISSN: 2056-306X

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