laskostumisen
Laskostuminen, or fossilization, is the process by which organic remains or traces are preserved in the rock record as fossils. It encompasses several pathways by which organic material is altered and retained, ranging from mineral replacement to impression formation. Common modes include permineralization, replacement, and carbonization, as well as casts and molds that capture external forms.
Permineralization occurs when groundwater rich in minerals fills pore spaces within organic tissues, preserving fine details.
Fossilization requires particular environmental conditions: rapid burial to limit decay and scavenging, low oxygen to slow
Preserved fossils illuminate ancient life, ancient environments, and evolutionary relationships. However, fossilization is inherently biased toward