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Line 14: − − [[File:Marine-microfossils-major hg.jpg|thumb|Marine microfossils.<ref>Grobe, H., B. Diekmann, and C.-D. Hillenbrand, 2009, The memory of the Polar Oceans, In: Hempel, G. (ed) Biology of Polar Oceans, hdl:10013/epic.33599.d001, pdf 0.4 MB.</ref>]]
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| isbn = 0-89181-602-X
| isbn = 0-89181-602-X
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Phosphatic microfossils, notably conodonts, are composed of crystallites of calcium phosphate (apatite) embedded in an organic matrix. There is one type of stratigraphically significant phosphatic microfossils (conodonts); but fish teeth, of less practical utility, are found in some marine strata.
Phosphatic microfossils, notably conodonts, are composed of crystallites of calcium phosphate (apatite) embedded in an organic matrix. There is one type of stratigraphically significant phosphatic microfossils (conodonts); but fish teeth, of less practical utility, are found in some marine strata.