nummulite limestone is a sedimentary rock on melange complex, indonesia

ago ammonites ancient animal are biology calcium central complex deposited detail evolution foraminifera formation fossil fossilized geologist history included indonesia java kingdom limestone marine melange mesozoic millions minerals natural nummulite nummulites ocean petrology phiolite phylum rhizaria rock science seas seashell sedimentary shallow shell skeleton smal small spiral stone survey tectonic texture these triassic years