What is Titanosaur?
{{taxobox | name = Titanosaurs | fossil_range = [[Cretaceous]] 140–66 mya | image = Epachthosaurus.jpg | image_width = 250px | image_caption = ''Epachthosaurus'' skeleton, National Museum, Czech Republic, originally from South America | regnum = [[Animal]]ia | classis = [[Reptile|Reptilia]] | superordo = [[Dinosauria]] | ordo = [[Saurischia]] | subordo = [[Sauropodomorpha]] | infraordo = [[Sauropoda]] | unranked_familia = †'''Titanosauria''' | unranked_familia_authority = Bonaparte & Coria, 1993 | superfamilia = †'''Titanosauroidea''' | superfamilia_authority = [[Richard Lydekker|Lydekker]], 1895}} [[File:Argentinosaurus BW.jpg|thumb|right|250px|''[[Argentinosaurus]]'' from Argentina]] [[File:Skeleton of Qiaowanlong kangxii.JPG|thumb|250px|''Qiaowanlong'' from China, 100 mya]] [[File:Titanosaur in Japan.jpg|thumb|right|250px|''Xinghesaurus'' from China, not yet described]] [[File:Argentinosaurus LACM.jpg|thumb|A single vertebra: ''Argentinosaurus'' dorsal and sauropod paleontologist [[Matt Wedel]]]] '''Titanosaurs''' were a group of large [[sauropod]] [[dinosaur]]s. Together with the [[Brachiosauridae|brachiosaurs]] and relatives they make up the larger [[clade]] '''Titanosauriformes'''. They were the largest and heaviest creatures ever to walk the Earth.<ref>BBC [[David Attenborough]] program: [https://www.bbc.co.uk/iplayer/episode/p03dwy5z/attenborough-and-the-giant-dinosaur?at_mid=v9onTNyYNt&at_campaign=Attenborough_and_the_Giant_Dinosaur&at_medium=display_ad&at_campaign_type=owned&at_link_origin=promo_box&at_audience_id=TV&at_product=iplayer&at_brand=p03dwy5z&at_ptr_name=bbc&at_ptr_type=media&at_format=image&at_objective=consumption&at_link_title=Attenborough_and_the_Giant_Dinosaur&at_bbc_team=BBC]</ref> Titanosaurs included ''[[Saltasaurus]]'', ''[[Isisaurus]]'', and ''[[Paralititan]]''. The group includes the largest land animals known to have existed. ''[[Patagotitan]]'' {{ndash}} ({{convert|37|m|ft|abbr=on}} long) – is now installed in the [[Natural History Museum]] in [[London]].<ref>[https://www.bbc.