<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31455487</termId><termName>Ornithischia</termName><termType>PT</termType><termNote><![CDATA[ Extinct order of obligate bipedal or quadrupedal, beaked, herbivorous dinosaurs characterized by a pelvic structure like that of birds, a beak-like structure in the front part of the mouth and grinding teeth in the rear, a four-branched pelvis, toes that often have hooflike structures., and often having heavy armor and horns. Dating from the Upper Triassic to Upper Cretaceous, existed in five major groups: ornithopods, pachycephalosaurs, stegosaurs, ankylosaurs, and ceratopsina dinosaurs. ]]></termNote><termCreatedDate>2026-03-30 21:02:36</termCreatedDate><relation><relationType>UF</relationType><termId>31455488</termId><termName>Predentata</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31455489</termId><termName>bird-hipped dinosaurs</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31455490</termId><termName>ornithischian</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31455491</termId><termName>ornithischians</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31436172</termId><termName>Dinosauria</termName><termType>PT</termType></relation></term>  </Zthes>