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Citation for Study 13120

Citation title: "The higher-level phylogeny of Archosauria (Tetrapoda: Diapsida).".

Study name: "The higher-level phylogeny of Archosauria (Tetrapoda: Diapsida).".

This study is part of submission 13120 (Status: Published).

Citation

Brusatte S.L., Benton M.J., Desojo J.B., & Langer M.C. 2010. The higher-level phylogeny of Archosauria (Tetrapoda: Diapsida). Journal of Systematic Palaeontology, 8(1): 3-47.

Authors

• Brusatte S.L.
• Benton M.J.
• Desojo J.B.
• Langer M.C.

Abstract

Crown group Archosauria, which includes birds, dinosaurs, crocodylomorphs, and several extinct Mesozoic groups, is a primary division of the vertebrate tree of life. However, the higher-level phylogenetic relationships within Archosauria are poorly resolved and controversial, despite years of study. The phylogeny of crocodile-line archosaurs (Crurotarsi) is particularly contentious, and has been plagued by problematic taxon and character sampling. Recent discoveries and renewed focus on archosaur anatomy enable the compilation of a new dataset, which assimilates and standardizes character data pertinent to higher-level archosaur phylogeny, and is scored across the largest group of taxa yet analysed. This dataset includes 47 new characters (25% of total) and eight taxa that have yet to be included in an analysis, and total taxonomic sampling is more than twice that of any previous study. This analysis produces a well-resolved phylogeny, which recovers mostly traditional relationships within Avemetatarsalia, places Phytosauria as a basal crurotarsan clade, finds a close relationship between Aetosauria and Crocodylomorpha, and recovers a monophyletic Rauisuchia comprised of two major subclades. Support values are low, suggesting rampant homoplasy and missing data within Archosauria, but the phylogeny is highly congruentwith stratigraphy. Comparisonwith alternative analyses identifies numerous scoring differences, but indicates that character sampling is the main source of incongruence. The phylogeny implies major missing lineages in the Early Triassic and may support a Carnian-Norian extinction event.

Keywords

Crocodylomorpha; Crurotarsi; Dinosauria; Mesozoic; Triassic; rauisuchians

External links

• DOI: 10.1080/14772010903537732
• Other URL: http://graemetlloyd.com/matr.html

About this resource

• Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S13120
• Other versions: Nexus NeXML
• Show BibTeX reference

  		@ARTICLE{TreeBASE2Ref21083,
  	 author = {Stephen L. Brusatte and Michael J. Benton and Julia B. Desojo and Max C. Langer},
  	 title = {The higher-level phylogeny of Archosauria (Tetrapoda: Diapsida).},
  	 year = {2010},
  	 keywords = {Crocodylomorpha; Crurotarsi; Dinosauria; Mesozoic; Triassic; rauisuchians},
  	 doi = {10.1080/14772010903537732},
  	 url = {http://graemetlloyd.com/matr.html},
  	 pmid = {},
  	 journal = {Journal of Systematic Palaeontology},
  	 volume = {8},
  	 number = {1},
  	 pages = {3--47},
  	 abstract = {Crown group Archosauria, which includes birds, dinosaurs, crocodylomorphs, and several extinct Mesozoic groups, is a primary division of the vertebrate tree of life. However, the higher-level phylogenetic relationships within Archosauria are poorly resolved and controversial, despite years of study. The phylogeny of crocodile-line archosaurs (Crurotarsi) is particularly contentious, and has been plagued by problematic taxon and character sampling. Recent discoveries and renewed focus on archosaur anatomy enable the compilation of a new dataset, which assimilates and standardizes character data pertinent to higher-level archosaur phylogeny, and is scored across the largest group of taxa yet analysed. This dataset includes 47 new characters (25% of total) and eight taxa that have yet to be included in an analysis, and total taxonomic sampling is more than twice that of any previous study. This analysis produces a well-resolved phylogeny, which recovers mostly traditional relationships within Avemetatarsalia, places Phytosauria as a basal crurotarsan clade, finds a close relationship between Aetosauria and Crocodylomorpha, and recovers a monophyletic Rauisuchia comprised of two major subclades. Support values are low, suggesting rampant homoplasy and missing data within Archosauria, but the phylogeny is highly congruentwith stratigraphy. Comparisonwith alternative analyses identifies numerous scoring differences, but indicates that character sampling is the main source of incongruence. The phylogeny implies major missing lineages in the Early Triassic and may support a Carnian-Norian extinction event.}
  }
  		

• Show RIS reference

  		TY  - JOUR
  ID  - 21083
  AU  - Brusatte,Stephen L.
  AU  - Benton,Michael J.
  AU  - Desojo,Julia B.
  AU  - Langer,Max C.
  T1  - The higher-level phylogeny of Archosauria (Tetrapoda: Diapsida).
  PY  - 2010
  KW  - Crocodylomorpha; Crurotarsi; Dinosauria; Mesozoic; Triassic; rauisuchians
  UR  - http://graemetlloyd.com/matr.html
  N2  - Crown group Archosauria, which includes birds, dinosaurs, crocodylomorphs, and several extinct Mesozoic groups, is a primary division of the vertebrate tree of life. However, the higher-level phylogenetic relationships within Archosauria are poorly resolved and controversial, despite years of study. The phylogeny of crocodile-line archosaurs (Crurotarsi) is particularly contentious, and has been plagued by problematic taxon and character sampling. Recent discoveries and renewed focus on archosaur anatomy enable the compilation of a new dataset, which assimilates and standardizes character data pertinent to higher-level archosaur phylogeny, and is scored across the largest group of taxa yet analysed. This dataset includes 47 new characters (25% of total) and eight taxa that have yet to be included in an analysis, and total taxonomic sampling is more than twice that of any previous study. This analysis produces a well-resolved phylogeny, which recovers mostly traditional relationships within Avemetatarsalia, places Phytosauria as a basal crurotarsan clade, finds a close relationship between Aetosauria and Crocodylomorpha, and recovers a monophyletic Rauisuchia comprised of two major subclades. Support values are low, suggesting rampant homoplasy and missing data within Archosauria, but the phylogeny is highly congruentwith stratigraphy. Comparisonwith alternative analyses identifies numerous scoring differences, but indicates that character sampling is the main source of incongruence. The phylogeny implies major missing lineages in the Early Triassic and may support a Carnian-Norian extinction event.
  L3  - 10.1080/14772010903537732
  JF  - Journal of Systematic Palaeontology
  VL  - 8
  IS  - 1
  SP  - 3
  EP  - 47
  ER  -