Fig. 7

Additional information on the morphology of G. cuvieri, with emphasis on dermal denticles in the extinct and living species of Galeorhinus. a, b, X-ray radiograph of two vertebral centra sampled from a young female of G. cuvieri (MCSNV T 1124), showing four vertebral bands. G. cuvieri MGGC 1976 (c, e, g) and G. galeus (d, f, h). An interpretive drawing of MGGC 1976 shows areas of preserved dermal denticles sampled for scanning electron microscopy (SEM). c, d SEM micrographs of dermal denticles from the abdominal region in G. cuvieri (c) and G. galeus (d). e, f SEM micrographs of dermal denticles from the head region in G. cuvieri (e) and G. galeus (f). g, h SEM micrographs of dermal denticles from the pectoral fin in G. cuvieri (g) and G. galeus (h)