The large size and rapid development of amphibian embryos has facilitated ground-breaking discoveries
in developmental biology.Here,wedescribetheembryogenesisoftheBudgett'sfrog(Lepidobatrachus
laevis), anunusualspecieswitheggsthatareovertwicethediameteroflaboratory Xenopus, andembryos
that cantoleratehighertemperaturestodevelopintoatadpolefourtimesmorerapidly