Ruiz-Trillo I., Roger A.J., Burger G., Gray M.W., and Lang B.F. (2008). A phylogenomic investigation into the origin of metazoa. Mol. Biol. Evol. 25, 664-672.

Bapteste E., Susko E., Leigh J., Ruiz-Trillo I., Bucknam J., and Doolittle W.F. (2008). Alternative methods for concatenation of core genes indicate a lack of resolution in deep nodes of the prokaryotic phylogeny. Mol. Biol. Evol. 25, 83-91.

Iñaki Ruiz-Trillo, Gertraud Burger, Peter W. H. Holland, Nicole King, B. Franz Lang, Andrew J. Roger & Michael W. Gray. (2007) The origins of multicellularity: a multi-taxon genome initiative. Trends in Genetics 23(3): 113-118.

Iñaki Ruiz-Trillo, Christopher E. Lane, John M. Archibald & Andrew J. Roger. (2006) Insights into the evolutionary origin and genome architecture of the unicellular opisthokonts Capsaspora owczarzaki and Sphaeroforma arctica. Journal of Eukaryotic Microbiology 53(5): 1-6.

M. Adl S, Iñaki Ruiz-Trillo, Melanie L. Wilson. (2006) Observations on a Geocentrophora sp. (Lecitoepitheliata) flatworm from forest soils in Nova Scotia. Journal of Natural History 40 (23-24): 1381-1387.

Iñaki Ruiz-Trillo, Yuji Inagaki, Lesley A. Davis, Sigmund Sperstad, Bjarne Landfald & Andrew J. Roger. (2004) Capsaspora owczarzaki is an independent opisthokont lineage. Current Biology 14: R946-R947.

Iñaki Ruiz-Trillo, Marta Riutort, H. Matthew Fourcade, Jaume Baguñà & Jeffrey L. Boore. (2004) Mitochondrial genome data support the basal position of Acoelomorpha and the polyphyly of the Platyhelminthes. Mol. Phylogenet. Evol. 33: 321- 332, 2004.

Iñaki Ruiz-Trillo, Jordi Paps, Mercè Loukota, Carles Ribera, Ulf Jondelius, Jaume Baguñà & Marta Riutort. (2002) A phylogenetic analysis of Myosin Heavy Chain type II sequences corroborates Acoela and Nemertodermatida are basal bilaterians. Proc. Natl. Acad. Sci. USA 99: 11246-11251.

Jondelius U, Iñaki Ruiz-Trillo, Jaume Baguñà & Marta Riutort. (2002) The Nemertodermatida are basal bilaterians and not members of the Platyhelminthes. Zoologica Scripta 31: 201-215.

Jaume Baguñà, Iñaki Ruiz-Trillo, Jordi Paps, Mercè Loukota, Carles Ribera, Ulf Jondelius & Marta Riutort. (2001) The first bilaterian organisms: simple or complex? New molecular evidence. Int. J. Dev. Biol. 45: S133-S134.

Iñaki Ruiz-Trillo, Marta Riutort, D. Timothy J. Littlewood, Elisabeth A. Herniou & Jaume Baguñà. (1999) Acoel flatworms: earliest extant bilaterian metazoans, not members of the Platyhelminthes. Science 283: 1919-1923. (*cover article)

Carranza S, Iñaki Ruiz-Trillo, D. Timothy J. Littlewood, Marta Riutort & Jaume Baguñà. (1998) A reappraisal of the phylogenetic and taxonomic position of land planarians (Platyhelminthes, Turbellaria, Tricladida) inferred from 18S rDNA sequences. Pedobiologia 42: 433-440.

Carranza S, D. T. J Littlewood, K. A. Clough, Ruiz-Trillo I, Baguñà J & Riutort M. (1998) A robust molecular phylogeny of the Tricladida (Platyhelminthes, Seriata) and a reassessment of morphological synapomorphies. Proc. R Soc. Lon. B 265: 631-640.

Barberà MJ, Ruiz-Trillo I, Jessica Leigh, Laura A. Hug & Andrew J. Roger. (2006) The diversity of mitochondrion-related organelles amongst eukaryotic microbes. In “Origins of Mitochondria and Hydrogenosomes”, Martin W. ed., Springer, Heidelberg (in press).

Ruiz-Trillo I (2001) Acoela. In “McGraw-Hill Encyclopedia of Science and Technology, 2001 Yearbook of Science & Technology”. McGraw-Hill, New York.

Baguñà J, Carranza S., Paps J, Ruiz-Trillo I & Riutort M. (2000) Molecular taxonomy and phylogeny of Tricladida. In “Interrelationships of the Platyhelminthes”, Littlewood & Bray Ed., Taylor & Francis, London.