<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">fossils</topic></authority><related type="narrower"><topic>microfossils</topic></related><related type="narrower"><topic>coprolites</topic></related><related type="narrower"><topic>Cardiidae</topic></related><related type="narrower"><topic>petrified wood</topic></related><related type="other"><topic>fossilization</topic></related><related type="other"><topic>paleontology</topic></related><related type="broader"><topic>organisms by condition</topic></related><related type="broader"><topic>rock by form</topic></related><related type="broader"><topic>remains</topic></related><variant type="other"><topic>fossil</topic></variant> <note xml:lang="en"><![CDATA[ Remains, impressions, or traces of humans, animals, or plants of past geological ages that have been preserved in the earth's crust. The complex of data recorded in fossils worldwide--known as the fossil record--is the primary source of information about the history of life on Earth. Only a small fraction of ancient organisms are preserved as fossils, and usually only organisms that have a solid and resistant skeleton are readily preserved. ]]></note></mads>