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Plant Macrofossil

Definition

A plant fragment large enough to be seen with the naked eye or low magnification: leaves, seeds, bark pieces, root fragments. Macrofossils are identified by gross morphology and surface microstructure, and they can link a body or object to a burial site or contact location.

Scale
Visible to the naked eye or under low magnification
Examples
Leaves, seeds, bark fragments, root pieces
Identification basis
Gross morphology and surface microstructure
Forensic use
Linking a body or object to a burial or contact site

Common questions

How does macrofossil evidence complement pollen analysis in a case?+

Pollen can travel and persist broadly, giving regional or seasonal information, while a plant macrofossil is typically less mobile and more directly tied to a specific location, so together they can narrow a scene from a general area down to a more precise contact point.

What limits the usefulness of a plant macrofossil as evidence?+

Fragmentary or decomposed material can lose the diagnostic surface features needed for species identification, and many plant species are widely distributed, so a macrofossil match may only narrow rather than pinpoint a location without other corroborating evidence.

Related terms

Diatom
A microscopic alga with a silica cell wall (frustule) bearing species-specific surface ornamentation. Diatoms are abundant in freshwater, marine, and brackish environments....
Forensic Palynology
The application of pollen and spore analysis to legal investigations. A forensic palynologist identifies the species composition of pollen assemblages from crime-scene...
Pollen Assemblage
The full complement of pollen and spore types recovered together from a sample, characterised by species identity and relative abundance. Assemblages are...
Secondary Transfer
The movement of a glass fragment from a primary surface (which contacted the broken glass) to a secondary surface (which contacted the...
Wood Anatomy
The microscopic cellular structure of wood, including vessel arrangement, ray type, fibre dimensions, and parenchyma distribution. These features are species-specific and form...

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