<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31409605</termId><termName>Holocephali</termName><termType>PT</termType><termNote><![CDATA[ Members of one of the two subclasses of cartilaginous fishes (the other being the Elasmobranchii), containing only one living order, Chimaeriformes, but having an extensive fossil record. ]]></termNote><termCreatedDate>2026-03-30 20:50:07</termCreatedDate><relation><relationType>UF</relationType><termId>31409606</termId><termName>holocephalian</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31409607</termId><termName>holocephalians</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31370476</termId><termName>Chondrichthyes</termName><termType>PT</termType></relation><relation><relationType>BT</relationType><termId>31370462</termId><termName>fish</termName><termType>PT</termType></relation></term>  </Zthes>