An '''LanthanideLantanido''' in sagunson nga mga elemento kimikal nga naglalakip han mga puthawon nga elemento kimikal nga may ihap atomica tikang 57 ngadto ha 71, tikang ha [[lanthanum]] tubtob [[lutetium]].<ref name="Gray" >{{cite book|last=Gray|first=Theodore|title=The Elements: A Visual Exploration of Every Known Atom in the Universe|year=2009|publisher=Black Dog & Leventhal Publishers|location=New York|isbn=978-1-57912-814-2|page=240}}</ref><ref>[http://www.britannica.com.ph/chemistry/lanthanide-369725.html Lanthanide], Encyclopædia Britannica on-line</ref><ref name="Holden2004">{{cite journal|last1=Holden|first1=Norman E.|last2=Coplen|first2=Tyler |date=January–February 2004|journal=Chemistry International|title=The Periodic Table of the Elements|publisher=IUPAC|volume=26|issue=1|page=8|url=http://www.iupac.org/publications/ci/2004/2601/2_holden.html|accessdate=23 March 2010}}</ref>
