<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31370418</termId><termName>Pteriomorphia</termName><termType>PT</termType><termNote><![CDATA[ Bivalves separated by some into a subclass based on shell structure. ]]></termNote><termCreatedDate>2026-03-30 20:39:55</termCreatedDate><relation><relationType>BT</relationType><termId>31339649</termId><termName>Bivalvia</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31409385</termId><termName>Ostreoida</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31409386</termId><termName>Pterioida</termName><termType>PT</termType></relation></term>  </Zthes>