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Table 3 Morphological character matrix used for cladistic analysis

From: Evolutionary diversification of secondary mechanoreceptor cells in tunicata

Species Character state
  1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
Botryllus schlosseri 0 1 0 0 - 1 1 0 1 - - 0 1 0 0 1 1 0 1
Botrylloides leachi 0 1 0 0 - 1 1 0 1 - - 0 1 0 0 1 1 0 1
Styela plicata 0 1 1 0 0 1 1 0 0 - - 0 1 1 0 1 1 0 1
Polyandrocarpa zorritensis 0 1 1 0 0 1 1 0 0 - - 0 1 1 0 1 1 0 1
Molgula socialis 0 1 1 0 0 1 1 0 0 - - 0 1 1 1 1 1 1 1
Pyura stolonifera 0 1 1 0 0 1 1 0 0 - - 0 1 1 1 1 1 1 1
Clavelina lepadiformis 1 0 0 1 0 1 - - - 1 0 0 1 0 0 0 1 0 1
Diplosoma listerianum 1 0 0 1 0 1 - - - 0 0 0 1 0 0 0 1 0 1
Ciona intestinalis 1 0 0 1 0 1 - - - 1 0 0 0 0 0 1 1 0 1
Ascidiella aspersa 1 0 0 1 0 1 - - - 1 0 1 0 0 0 0 1 0 1
Phallusia mammillata 1 0 0 1 0 0 - - - - 0 0 0 1 0 0 1 0 1
Chelyosoma productum 1 0 0 1 0 1 - - - 1 0 1 0 0 0 0 1 0 1
Corella inflata 1 0 0 1 0 0 - - - - 0 1 0 0 0 0 1 0 1
Oikopleura dioica 1 0 0 1 1 0/1 - - - 1 1 0 1 0 0 0 0 -  
Pyrosoma atlanticum 1 1 0 0 - 1 1 0 0 - - 0 0 0 ? 0 1 0 1
Doliolum nationalis 1 1 0 0 - 1 1 0 0 - - 0 0 0 0 0 1 0 1
Branchiostoma floridae 1 1 0 0 - 1 0 0 0 - - 0 0 0 - 1 1 0 0
Lethenteron camtschaticum 1 1 0 0 - 1 0 1 - - - 0 0 0 - 0 0 - 0
Eptatretus stoutii 1 1 0 0 - 1 1 0 - - - 0 0 0 - ? 0 - 0
Danio rerio 1 1 0 0 - 1 0 1 - - - 0 0 0 - ? 0 - 0
  1. Matrix based on 19 characters derived from detailed ultrastructural studies of secondary sensory cells in different 20 species. For all the characters, “0” denotes absence and “1” presence (see Table 2 for character description); “-” was used when the character definition was not applicable to the species, “?” when the character state is not known. See Table 1 for references.