Crivadiatherium iliescui, Radulesco & Sudre, 1985

Tabuce, Rodolphe, Delmer, Cyrille & Gheerbrant, Emmanuel, 2007, Evolution of the tooth enamel microstructure in the earliest proboscideans (Mammalia), Zoological Journal of the Linnean Society 149 (4), pp. 611-628 : 621

CRIVADIATHERIUM ILIESCUI

In a vertical section of a molar fragment, the enamel is around 1400-µm thick. The Schmelzmuster is twolayered with radial enamel in the outer zone underlain progressively by modified radial enamel in the inner first-third ( Fig. 6E). In modified radial enamel ( Pfretzschner, 1994), the IPM forms vertical large sheets between radial rows of prisms; the prisms are lanceolate in outline and the crystallites of the IPM are directed perpendicular to the long axis of the prisms. On a horizontal section of the same specimen, the diameter of the prisms is around 5–10 µm in the outer zone; their cross sections are typically rounded and the amount of IPM is important around prisms.