典型文献
New genus of Cupressaceae from the Upper Cretaceous of Patagonia(Argentina)fills a gap in the evolution of the ovuliferous complex in the family
文献摘要：
The conifer family Cupressaceae encompasses seven subfamilies.Five of them were once considered to constitute the family Taxodiaceae,later eliminated because of its paraphyletic nature but remaining as an informal category for early-diverging Cupressaceae lineages.Among the taxodiaceous subfamilies,Athrotax-oideae shows a unique morphology in its ovuliferous complexes(OCs)and a phylogenetically unexplored fossil record.We describe the new genus and species Patagotaxodia lefipanensis,based on OC adpressions associated with leafy branches collected at the Maastrichtian section of the Lefipán Formation(Patagonia,Argentina),and we refer it to Athrotaxoideae.We include Patagotaxodia in total evidence phylogenetic analysis to test its affinity,and we recover it within the subfamilies Athrotaxoideae or Cunninghamioideae.However,we argue that the characters supporting the athrotaxoid affinity are more meaningful in a taxodiaceous systematic context.This placement is also supported by taxon inclusion-exclusion experiments.We discuss the position of other Cretaceous athrotaxoid records.With basis on the morphological insights provided by the OC morphology of extant and extinct Athrotaxoideae,we study the evolution of the OC morphology in the family in a phylogenetic context and discuss the results in the light of the fossil record of the family.We discuss how and when the different morphologies appeared in the family.Based on phylogenetic,temporal,morphological,and ontogenetic evidence,we conclude that the OC morphology shown by the subfamily Athrotaxoideae is intermediate between two of the most common morphologies within extant and extinct Cupressaceae species,one of which would show adaptative advantages over basal morphologies.
文献关键词：
中图分类号：
作者姓名：
Ana Andruchow-Colombo;María A.Gandolfo;Ignacio H.Escapa;Néstor R.Cuneo
作者机构：
LH Bailey Hortorium,Plant Biology Section,School of Integrative Plant Science,Cornell University,Ithaca 14853 NY,USA;Consejo Nacional de Investigaciones Científicas y Técnicas(CONICET),Museo Paleontológico Egidio Feruglio(MEF),Av.Fontana 140,Trelew 9100 Chubut,Argentina
文献出处：
引用格式：
[1]Ana Andruchow-Colombo;María A.Gandolfo;Ignacio H.Escapa;Néstor R.Cuneo-.New genus of Cupressaceae from the Upper Cretaceous of Patagonia(Argentina)fills a gap in the evolution of the ovuliferous complex in the family)[J].植物分类学报,2022(06):1417-1439
A类：
ovuliferous,Taxodiaceae,paraphyletic,taxodiaceous,Athrotax,oideae,OCs,Patagotaxodia,lefipanensis,adpressions,Lefip,Athrotaxoideae,Cunninghamioideae,athrotaxoid
B类：
New,genus,Cupressaceae,from,Upper,Cretaceous,Patagonia,Argentina,fills,gap,evolution,conifer,encompasses,seven,subfamilies,Five,them,were,once,considered,constitute,later,eliminated,because,its,nature,but,remaining,informal,category,early,diverging,lineages,Among,shows,unique,morphology,complexes,phylogenetically,unexplored,fossil,We,describe,new,species,associated,leafy,branches,collected,Maastrichtian,section,Formation,refer,include,total,evidence,analysis,test,affinity,recover,within,However,argue,that,characters,supporting,more,meaningful,systematic,context,This,placement,also,supported,by,taxon,inclusion,exclusion,experiments,discuss,position,other,records,With,basis,morphological,insights,provided,extant,extinct,study,results,light,when,different,morphologies,appeared,Based,temporal,ontogenetic,conclude,shown,subfamily,intermediate,between,two,most,common,one,which,would,adaptative,advantages,basal
AB值：
0.464183
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