Added by | Bart Perdieus |
General Description : | Ammonites /ˈæmənaɪts/ are an extinct group of marine invertebrate animals in the subclass Ammonoidea of the class Cephalopoda. These molluscs are more closely related to living coleoids (i.e. octopuses, squid, and cuttlefish) than they are to shelled nautiloids such as the living Nautilus species. Ammonites are excellent index fossils, and it is often possible to link the rock layer in which they are found to specific geological time periods. Their fossil shells usually take the form of planispirals, although there were some helically spiraled and nonspiraled forms (known as heteromorphs). |
Material | Gold |
Face value | 6 + 4 cent |
Catalog code (Michel) | 776 |
Catalog code | NL-767 |
Print run | 906.397 |
Issue date | 27/04/1962 |
Designer | Cor van Weele |
Printed by | Joh. Enschedé en Zonen |
Perforation | 12 3/4 x 14 |
Catalog prices | No catalog prices set yet |