Tooth mineralization and histology patterns in extinct and extant snaggletooth sharks, Hemipristis (Carcharhiniformes, Hemigaleidae)—Evolutionary significance or ecological adaptation?
Fig 5
Micro-CT images of tooth series of the sphyrnid shark Sphyrna zygaena.
Tooth files showing the number of teeth, tooth stages and mineralization. (A) LMC3 (lower jaw), (B) LPC3 (upper jaw) of Sphyrna zygaena (EMRG-Chond-J-8). Scalebar = 0.5cm. en, enameloid; mc, Meckel’s cartilage; or, orthodentine; pc, pulp cavity; pq, palatoquadrate.