<?xml version="1.0"?>
<stmml:unitList xmlns:stmml="http://www.xml-cml.org/schema/stmml-1.1"
                xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                xsi:schemaLocation="http://www.xml-cml.org/schema/stmml-1.1 ../stmml.xsd">
        <stmml:unit name="gramsPerSquareMeter" unitType="arealMassDensity"
                    id="gramsPerSquareMeter" parentSI="kilogramsPerSquareMeter" multiplierToSI=".001"/>
        <stmml:unit name="speciesPerSquareMeter" unitType="arealDensity"
                    id="speciesPerSquareMeter" parentSI="numberPerSquareMeter" multiplierToSI="1"/>
</stmml:unitList>
