<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31409573</termId><termName>Mesosauria</termName><termType>PT</termType><termNote><![CDATA[ Extinct order of aquatic reptiles with slender elongate jaws filled with long pointed teeth, a tail as long as or longer than the body and flattened side to side, well developed limbs, and enlarged paddlelike hind feet. ]]></termNote><termCreatedDate>2026-03-30 20:50:07</termCreatedDate><relation><relationType>UF</relationType><termId>31409574</termId><termName>Proganosauria</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31409575</termId><termName>mesosaur</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31409576</termId><termName>mesosaurs</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31370459</termId><termName>Reptilia</termName><termType>PT</termType></relation><relation><relationType>BT</relationType><termId>31409566</termId><termName>Anapsida</termName><termType>PT</termType></relation></term>  </Zthes>