A truly tiny cut & polished ammonite from Madagascar. This one has golden calcite filling its chambers. It is discreetly glued onto a silver coloured base so that it stands nicely. I think that this is the centre of a larger fossil which has been worked down to this size. I think that this tiny fossil will work in any of the miniature scales. The third photo is with 1:24 scale props (the zebra nerite shell is available as part of a trio of tiny shells).
Ammonites are extinct relatives of modern day nautiloids and squid. The largest known ammonite in the world would have been 8 1/2 feet (2.59 metres) across if it were complete.
3/8 inch (0.95 cm) wide, 3/16 inch (0.5 cm) deep and just under 3/8 inch (0.95 cm) tall.