Figure 15 in Scale morphology and specialized dorsal scales of a new teleosteomorph fish from the Aptian of West Gondwana

Figure 15. Histological slides of Teleosteomorpha n. sp. 1 (specimen MIC-V523) observed under petrographic microscope. (a) Lepisosteoidscale type. (b) Multiple ganoine layers under normal light. (c) Multiple ganoine layers under polarized light. (d) Ganoine and basal bony plate with all the lepisosteoid features; bbp, basal bony plate; c.W, canaliculi of Williamson; gl, ganoine layers; lb, laminar bone; llc, lateral line canal; o, lacunae (osteocyte spaces); sv.c, vascular canal; S.f, Sharpey's fiber.