protostome
pl: protostomes
Related Words
deuterostomebilaterianblastoporeembryodevelopmentmolluskannelidarthropodgastropodbivalvecephalopodinsectarachnidcrustaceanmyriapodpolychaeteoligochaetehirudineamoltingcuticlechitincoelomschizocoelyblastulagastrulagerm layerectodermendodermmesodermsymmetrybilateralmouthanusgutalimentary canalmorphologyphylogenytaxonomycladeevolutionspeciationzoologybiologyembryologyanatomysegmentationmetamerismcleavagecelltissueorganisminvertebratephylumclassordergenusspecieslineageancestordescendanthomologyanalogydivergenceconvergence