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Molecular systematics of primary reptilian lineages and the tuatara mitochondrial genome.
University of Michigan, Museum of Zoology and Department of Ecology and Evolutionary Biology.
University of Michigan, Museum of Zoology and Department of Ecology and Evolutionary Biology.
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2003 (English)In: Molecular Phylogenetics and Evolution, ISSN 1055-7903, E-ISSN 1095-9513, Vol. 29, no 2, 289-97 p.Article in journal (Refereed) Published
Abstract [en]

We provide phylogenetic analyses for primary Reptilia lineages including, for the first time, Sphenodon punctatus (tuatara) using data from whole mitochondrial genomes. Our analyses firmly support a sister relationship between Sphenodon and Squamata, which includes lizards and snakes. Using Sphenodon as an outgroup for select squamates, we found evidence indicating a sister relationship, among our study taxa, between Serpentes (represented by Dinodon) and Varanidae. Our analyses support monophyly of Archosauria, and a sister relationship between turtles and archosaurs. This latter relationship is congruent with a growing set of morphological and molecular analyses placing turtles within crown Diapsida and recognizing them as secondarily anapsid (lacking a skull fenestration). Inclusion of Sphenodon, as the only surviving member of Sphenodontia (with fossils from the mid-Triassic), helps to fill a sampling gap within previous analyses of reptilian phylogeny. We also report a unique configuration for the mitochondrial genome of Sphenodon, including two tRNA(Lys) copies and an absence of ND5, tRNA(His), and tRNA(Thr) genes.

Place, publisher, year, edition, pages
2003. Vol. 29, no 2, 289-97 p.
National Category
Biological Sciences Zoology Evolutionary Biology Biological Systematics
Research subject
Biology with specialization in Systematics; Biology with specialization in Molecular Evolution; Biology with specialization in Evolutionary Organismal Biology; Systematic Zoology
URN: urn:nbn:se:uu:diva-208431PubMedID: 13678684OAI: oai:DiVA.org:uu-208431DiVA: diva2:652795
Available from: 2013-10-01 Created: 2013-09-30 Last updated: 2013-10-01

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Ast, Jennifer C
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