Additional file 1 of Thyroid and endostyle development in cyclostomes provides new insights into the evolutionary history of vertebrates

Additional file 1: Fig. S1. Endostyle and thyroid glands of chordates. Fig. S2. Hagfish thyroid development described by Charles Stockard and hagfish thyroid gland development during late developmental stages. Fig. S3. Thyroid development in catshark. Fig. S4. Expression patterns of cyclostome- and lamprey-specific paralogues. Fig. S5. Molecular phylogenetic analysis of Pax2/5/8 and Hhex.