Leporinus reinhardti (Lütken) (Figs. 3, 4, and 5) The bone tissue close to the teeth is compact, without apparent alveoli. Replacement teeth are arranged in a single row and aligned with their respective functional tooth and lodged in trenches. The teeth show comparable developmental stages, and there is no pre-eruptive rotation. Histologically, the replacement teeth in their final stage of development show a pattern similar to that of functional teeth from the exterior inwards: a narrow enamel layer (light area of the tooth, see Figure 5C), which, because it was totally mineralized, was decalcified during the tissue preparation process, surrounded by elongated ameloblasts. Next, are the dentin layer and the set of odontoblasts, the same size as the ameloblasts. Finally, the dental papilla (mesenchymal cells) forms a narrow area. The functional teeth show a protrusive arm from their widest area by which they are supported on the internal epithelial tissue of the dentary (Fig 4A,B). The dentin layer is equally narrow all around the teeth. The dental pulp, located anterior to the horizontal line that goes through the bone-tooth connection, is narrow and approximately the same width as the tooth base; apparently, its posterior border is connective tissue (Fig. 5D).

Published as part of Scharcansky, Alexandre & Lucena, Carlos Alberto S., 2008, Phylogenetic assessment of ultrastructural and histological characters of teeth in the Anostomoidea, Hemiodontidae and Parodontidae (Teleostei: Ostariophysi: Characiformes), pp. 36-56 in Zootaxa 1948 (1) on page 40, DOI: 10.11646/zootaxa.1948.1.2, http://zenodo.org/record/5231341