Table S1. Sampling sites and fixation of specimens.; Figure S2. Comparison of conserved protein domains of Ofu-SCO with that of other members of the Thrombospondin-family. from Early evolution of radial glial cells in Bilateria

-; Main domains are named in the scheme. All protein images are generated using SMART [S3, S4], modified and licensed under a Creative Commons Attribution-Share Alike 3.0 Unported (creativecommons.org/licenses/bysa/ 3.0/legalcode).