Shells of Neopycnodonte cochlear can reach a size of about .Fossil ShellsConchology Shells are usually brownish or purplish, quite thin, without prominent ribs. The lower valve is rounded, the upper valve is smaller.La Valle del CesanoCOSSIGNANI, Tiziano; COSSIGNANI, V.; DI NISIO, A.; PASSAMONTI, M. (1992) - Atlante delle conchiglie del Medio Adriatico
