Keywords: Origin of Vertebrates Fig 159.png Fig 159 ”Diagrams to illustrate the Development of the Vertebrate CÅ“lom After van Wijhe N central nervous system; Nc notochord; Ao aorta; Mg midgut A My myocÅ“le; Mes mesocÅ“le; Met metacÅ“le; Hyp hypomere pronephric B and C My myotome; Mes mesonephros; S d segmental duct pronephric ; Met body-cavity 1908 The Origin of Vertebrates https //archive org/details/originofvertebra1908gask Walter Holbrook Gaskell PD-old-auto-1923 1914 Origin of Vertebrates book Diagrams of animal anatomy |