{{Short description|Extinct genus of reptiles}} {{Automatic taxobox | fossil_range = [[Early Triassic|Early]]-?[[Middle Triassic]], {{fossil_range|251|244}} | image = Eumetabolodon-Paleozoological Museum of China.jpg | image_caption = Cast of holotype, [[Paleozoological Museum of China]] | taxon = Eumetabolodon | authority = Li, 1983 | subdivision_ranks = Species | subdivision = *{{extinct}}'''''E. bathycephalus''''' <small>Li, 1983 ([[type species|type]])</small> }}
'''''Eumetabolodon''''' is an [[extinct]] [[genus]] of [[procolophonine]] [[procolophonid]] [[parareptile]] from early and middle [[Triassic]] ([[Induan]] to earliest [[Anisian]] stages) deposits of [[Nei Mongol]], northern [[China]]. Two species of ''Eumetabolodon'' were named by J. L. Li in [[1983 in paleontology|1983]] and the [[type species]] is ''Eumetabolodon bathycephalus''.<ref name=Eumetabolodon>{{cite journal |author=J. L. Li |year=1983 |title=Tooth replacement in a new genus of procolophonid from the Early Triassic of China |journal=Palaeontology |volume=26 |issue=3 |pages=567–583 }}</ref>
==Discovery== The type species is known from the [[holotype]] [[IVPP]] V6064, a nearly complete [[skull]] which was collected in the Zhuengeerqi locality, from the upper [[Heshanggou Formation]] ([[Olenekian]] and earliest [[Anisian]] stages), [[Ordos Basin]]. A second specimen, IVPP V6070 was collected in the Zhuengeerqi locality, from the [[Ermaying Formation]] (upper Olenekian stage), Ordos Basin. Additional 17 specimens, IVPP V6065-69, V6166 (1&2), V6167, V6168 (1&2), V6169-75, were collected in the Gucheng locality, from the upper Heshanggou Formation, Ordos Basin. ''"E." dongshengensis'' is known only from the holotype IVPP V6073, a partial skull including right [[Frontal bone|frontal]], [[Prefrontal bone|prefrontal]], [[Lacrimal bone|lacrimal]], [[maxilla]] with seven teeth and the right ramus of [[lower jaw]]. It was collected in the Wusilangou locality near [[Dongsheng]] (also in Nei Mongol), from the [[Early Triassic]] [[Shihtienfeng Formation]].<ref name=Eumetabolodon/>
==Phylogeny== Recent [[cladistic]] analyses suggested that ''Eumetabolodon'' is a [[paraphyletic]] genus; the type species represents a relatively derived procolophonine, whereas ''"E." dongshengensis'' is a more basal procolophonid of the subfamily [[Theledectinae]]. In 2020 a separate genus ''[[Youngetta]]'' was named.
The [[cladogram]] below follows the topology from a 2012 analysis by Cisneros.<ref name=Phylo08>{{cite journal |author=Juan Carlos Cisneros |year=2008 |title=Phylogenetic relationships of procolophonid para reptiles with remarks on their geological record |url=http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=2052096 |journal=Journal of Systematic Palaeontology |volume=6 |issue=3 |pages=345–366 |doi=10.1017/S1477201907002350 |bibcode=2008JSPal...6..345C |s2cid=84468714 |url-access=subscription }}</ref>
{{clade| style=font-size:85%;line-height:85% |label1=[[Procolophonidae]] |1={{clade |1=''[[Coletta (reptile)|Coletta]]'' |2=''[[Pintosaurus]]'' |3=''[[Sauropareion]]'' |4={{clade |1=''[[Phaanthosaurus]]'' |2={{clade |label1=[[Theledectinae]] |1={{clade |1='''''"Eumetabolodon" dongshengensis''''' (= ''[[Youngetta]]'') |2=''[[Theledectes]]'' }} |2={{clade |1=''[[Tichvinskia]]'' |2={{clade |1=[[Leptopleuroninae]] |label2=[[Procolophoninae]] |2={{clade |1={{clade |1=''[[Timanophon]]'' |2={{clade |1=''[[Kapes (reptile)|Kapes]]'' |2=''[[Thelephon]]'' }} }} |2={{clade |1='''''Eumetabolodon bathycephalus''''' |2={{clade |1=''[[Procolophon]]'' |2=''[[Teratophon]]'' |3=''[[Thelerpeton]]'' }} }} }} }} }} }} }} }} }}
==References== {{Reflist}} {{Portal|Paleontology}} {{Parareptilia|Procolophonoidea}} {{Taxonbar|from=Q5409570}}
[[Category:Procolophoninae]] [[Category:Early Triassic reptiles of Asia]] [[Category:Fossil taxa described in 1983]] [[Category:Middle Triassic reptiles of Asia]] [[Category:Anisian life]] [[Category:Prehistoric reptile genera]]