Systema naturæ - nature Universum - universe see [unranked] Mundus Plinius naturalia - natural bodies Regnum Lapideum - mineral kingdom Class Fossilia nom. inval. - Lapides aggregati Order Petrificata - fossils Genus Ichthyolithus nom. inval. - fossil fishes Oolithus nom. inval. see Ichthyolithus ovorum nom. inval.