| gptkbp:instanceOf | gptkb:family_of_amphibians 
 | 
                        
                            
                                | gptkbp:audio | clicking sounds using hyoid apparatus 
 | 
                        
                            
                                | gptkbp:characteristic | webbed feet fully aquatic
 flattened body
 lack a tongue
 
 | 
                        
                            
                                | gptkbp:class | gptkb:Amphibia 
 | 
                        
                            
                                | gptkbp:commonName | tongueless frogs 
 | 
                        
                            
                                | gptkbp:conservationStatus | varies by species 
 | 
                        
                            
                                | gptkbp:diet | carnivorous 
 | 
                        
                            
                                | gptkbp:distribution | gptkb:South_America gptkb:sub-Saharan_Africa
 
 | 
                        
                            
                                | gptkbp:feature | lateral line system no vocal cords
 
 | 
                        
                            
                                | gptkbp:firstDescribed | Gray, 1825 
 | 
                        
                            
                                | gptkbp:habitat | freshwater 
 | 
                        
                            
                                | gptkbp:kingdom | gptkb:Animalia 
 | 
                        
                            
                                | gptkbp:lifespan | up to 15 years in captivity 
 | 
                        
                            
                                | gptkbp:notableFeature | eggs carried on female's back in Pipa genus 
 | 
                        
                            
                                | gptkbp:notableGenus | gptkb:Pipa gptkb:Xenopus
 
 | 
                        
                            
                                | gptkbp:notableSpecies | gptkb:Pipa_pipa gptkb:Xenopus_laevis
 
 | 
                        
                            
                                | gptkbp:numberOfSpecies | 5 over 30
 
 | 
                        
                            
                                | gptkbp:order | gptkb:Anura 
 | 
                        
                            
                                | gptkbp:phylum | gptkb:Chordata 
 | 
                        
                            
                                | gptkbp:reproduction | external fertilization 
 | 
                        
                            
                                | gptkbp:typeSpecies | gptkb:Pipa_pipa 
 | 
                        
                            
                                | gptkbp:useInResearch | Xenopus laevis used in developmental biology 
 | 
                        
                            
                                | gptkbp:bfsParent | gptkb:African_clawed_frog gptkb:Xenopus_laevis
 
 | 
                        
                            
                                | gptkbp:bfsLayer | 5 
 | 
                        
                            
                                | https://www.w3.org/2000/01/rdf-schema#label | Pipidae 
 |