Set of 7 Aptian Zonal Ammonites

Set of seven Aptian Zonal Indices comprising: APT 2.0 Prodeshayesites fissicostatus; APT 3.0 Deshaysites forbesi; APT 4.0 Deshaysites deshaysi; APT 5.0F or APT 5.0 Tropaeum bowerbanki; APT 6.0 Chelociceras (apicheloniceras) martinioides; APT 7.0 Parahopli nutfieldiensis; APT 8.0 Hypacanthoplites jacobi.

Size: 34 mm up to 390 mm in diameter.