scale microfossils scale microfossils apatitic scale microfossils are a group of reticulate phosphatic plates found in the neoproterozoic (810 million years ago) strata of the fifteenmile group, yukon, canada. they represent some of the earliest examples of biologically induced biomineralization, using the mineral hydroxyapatite. scale microfossilstemporal range: scientific classification domain: eukaryota (unranked): †apatitic scale microfossils