<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31436182</termId><termName>Plesiosauria</termName><termType>PT</termType><termNote><![CDATA[ Extinct order of fossil marine reptiles characterized by a broad, flattened body, often a small head often on long flexible neck, a short tail, and four large, paddle-like limbs, dating to the Jurassic and Cretaceous periods. ]]></termNote><termCreatedDate>2026-03-30 20:57:36</termCreatedDate><relation><relationType>UF</relationType><termId>31436183</termId><termName>plesiosaur</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31436184</termId><termName>plesiosaurs</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31409597</termId><termName>Diapsida</termName><termType>PT</termType></relation></term>  </Zthes>