Fig. 1

Animals used in this study. a Embryo of Madagascar ground gecko at four days before estimated date of oviposition (−4 days post oviposition, −4 dpo). b 9 dpo embryo. c 30 dpo embryo. Scale bars, 2 mm. d Molecular phylogenetic relationship between the gecko and other amniotes. Asterisks indicate the sauropsid species for which whole genome sequences have been published. Divergence times were based on the TimeTree project [22]