Elements only used for palaeontological units Description of the fossil preservation of the specimen. Original, mould, cast etc The sediment or mineral matrix enclosing the fossil Form of mineralisation Life position, allochthonous death assemblage, post mortem history details etc. Known or assumed time range of a fossil Elements expressing stratigraphy at the gathering site. Chronostratigraphic dating term e.g. Jurassic Period biostratigraphic zonation term e.g. Psiloceras planorbis zone lithostratigraphic term describing geology e.g. Mercia Mudstone Group Free text field for informal recording of field contents