DIGITAL INVESTIGATION OF LAMNIFORM SHARK VERTEBRAE FROM THE SIBILLINI MTS. (NORTHERN APENNINES, ITALY) oleh ALFIO MOSCARELLA, MARCO ROMANO, LORENZO CONSORTI, ANGELO CIPRIANI, GABRIELE BINDELLINI, GIUSEPPE MARRAMÀ, GIORGIO CARNEVALE, ADELE GARZARELLA, MARIA LETIZIA PAMPALONI, PAOLO CITTON, FERDINANDO SPANO', CHIARA D'AMBROGI, CRISTINA MURARO, ERNESTO PAOLO PRINZI, GIUDITTA RADEFF, GINO ROMAGNOLI, SIMONE FABBI