Data from: Molecular palaeontology illuminates the evolution of ecdysozoan vision

  • James F. Fleming (Contributor)
  • Reinhardt Møbjerg Kristensen (Contributor)
  • Martin Vinther Sørensen (Contributor)
  • Tae-Yoon S. Park (Contributor)
  • Kazuharu Arakawa (Contributor)
  • Mark Blaxter (Contributor)
  • Lorena Rebecchi (Contributor)
  • Roberto Guidetti (Contributor)
  • Tom Williams (Contributor)
  • Nicholas W Roberts (Contributor)
  • Jakob Vinther (Contributor)
  • Davide Pisani (Contributor)



Colour vision is known to have arisen only twice – once in Vertebrata and once within the Ecdysozoa, in Arthropoda. However, the evolutionary history of ecdysozoan vision is unclear. At the molecular level, visual pigments, composed of a chromophore and a protein belonging to the opsin family, have different spectral sensitivities and these mediate colour vision. At the morphological level, ecdysozoan vision is conveyed by eyes of variable levels of complexity; from the simple ocelli observed in the velvet worms (phylum Onychophora) to the marvellously complex eyes of insects, spiders and crustaceans. Here we explore the evolution of ecdysozoan vision at both the molecular and morphological level; combining analysis of a large-scale opsin dataset that includes previously-unknown ecdysozoan opsins with morphological analyses of key Cambrian fossils with preserved eye structures. We found that while several non-arthropod ecdysozoan lineages have multiple opsins, arthropod multi-opsin vision evolved through a series of gene duplications were fixed in a period of 35 to 71 Million years (Ma) along the stem-arthropod lineage. Our integrative study of the fossil and molecular record of vision indicates that fossils with more complex eyes were likely to have possessed a larger complement of opsin genes.,RevBayes AnalysesThis folder contains data scripts and results of our RevBayes analysesRevBayesAnalysis_Oct2018.zipALE analysesThis include data scripts and results of ALE analysesALE.tar.gzAnalyses of Prank Aligned SequencesThis fine include the data scripts and results of the analyses we performed on a PRANK aligned datasetPRANKPrelim.tar.gzPreliminary Analyses of MUSCLE aligned sequencesThis include the preliminary alignment generated with MUSCLE and results of analyses obtained from its phylogenetic analysesMUSCLEPrelim.tar.gzMuscle Aligned Sequences Final AnalysesThis is the final alignment we generated plus results of its analyses.MUSCLEFinalAnalysis.tar.gzOpsin Divergence timesRelaxed (CIR) Molecular clock analyses of the Opsin final MUSCLE alignmentMolecularClockPB.tar.gz,
Date made available26 Nov 2018

Cite this