Assessing the root of bilaterian animals with scalable phylogenomic methods
New sequence data and methods strongly uphold previous suggestions that Acoelomorpha is sister clade to all other bilaterian animals, find diminishing evidence for the placement of the enigmatic Xenoturbella within Deuterostomia, and place Cycliophora with Entoprocta and EctoproCTa.
Xenacoelomorpha is the sister group to Nephrozoa
- J. Cannon, Bruno C. Vellutini, Julian Smith, F. Ronquist, U. Jondelius, A. Hejnol
- 3 February 2016
The position of Xenacoelomorpha in the tree of life remains a major unresolved question in the study of deep animal relationships. Xenacoelomorpha, comprising Acoela, Nemertodermatida, and…
Phylogenies without roots? A plea for the use of vouchers in molecular phylogenetic studies.
- F. Pleijel, U. Jondelius, M. Thollesson
- BiologyMolecular Phylogenetics and Evolution
- 1 July 2008
A phylogenetic analysis of myosin heavy chain type II sequences corroborates that Acoela and Nemertodermatida are basal bilaterians
- I. Ruiz-Trillo, J. Paps, M. Riutort
- BiologyProceedings of the National Academy of Sciences…
- 12 August 2002
This study demonstrates that Platyhelminthes are polyphyletic and that acoels and nemertodermatids are the extant earliest bilaterians, and that the common bilaterian ancestor was not, as currently held, large and complex but small, simple, and likely with direct development.
How the worm got its pharynx: phylogeny, classification and Bayesian assessment of character evolution in Acoela.
- U. Jondelius, A. Wallberg, M. Hooge, O. Raikova
- BiologySystematic Biology
- 9 August 2011
A phylogenetic classification of Acoela down to the family level where six previous family level taxa are synonymized and Diopisthoporidae is the sister group to all other acoels and has the highest posterior similarity to the root.
The Nemertodermatida are basal bilaterians and not members of the Platyhelminthes
- U. Jondelius, I. Ruiz-Trillo, J. Baguñá, M. Riutort
- 1 April 2002
The results imply that the last common ancestor of bilaterian metazoans was a small, benthic, direct developer without segments, coelomic cavities, nephrida or a true brain.
The phylogenetic position of the comb jellies (Ctenophora) and the importance of taxonomic sampling
- A. Wallberg, M. Thollesson, J. Farris, U. Jondelius
- 1 December 2004
The reconstructed topology is considered to represent the current best hypothesis of the interrelationships of these old lineages and morphological features supporting alternative hypotheses are discussed in the light of this result.
Phylogeny of the Prolecithophora (Platyhelminthes) Inferred from 18S rDNA Sequences
- M. Norén, U. Jondelius
- 1 June 1999
The monophyly of the Prolecithophora sensu stricto and the family Plagiostomidae is strongly supported and the taxa Separata, Combinata, and PlagiOSTomum are shown to be nonmonophyletic.
Dismissal of Acoelomorpha: Acoela and Nemertodermatida are separate early bilaterian clades
- A. Wallberg, M. Curini-Galletti, A. Ahmadzadeh, U. Jondelius
- 1 September 2007
We used new 18S and 28S rRNA sequences analysed with parsimony, maximum likelihood and Bayesian methods of phylogenetic reconstruction to show that Nemertodermatida, generally classified as the…
Phylogeny of Chaetonotidae and other Paucitubulatina (Gastrotricha: Chaetonotida) and the colonization of aquatic ecosystems
- Tobias Kånneby, M. Todaro, U. Jondelius
- Biology, Environmental Science
- 1 January 2013
Phylogeny of Chaetonotidae and other Paucitubulatina (Gastrotricha: chaetonotida) and the colonization of aquatic ecosystems is studied.