Adjective
of or relating to or containing calcite
Source: WordNetThis annelid affinity came as some surprise, as it is the only instance of this group developing calcitic armour. Source: Internet
The group consist of three distinct families: the plumulitids, turrilepadids and lepidocoleids. citation Fossils Only the calcitic scleretomes ("armour plates") of these worms tend to be preserved in the fossil record. Source: Internet