What is another word for agnathans?
Pronunciation: [ˈaɡnəθənz] (IPA) 
Agnathans, also known as jawless fish, belong to a class of marine animals characterized by the absence of jaws and paired fins. Some common synonyms for agnathans include cyclostomes, hagfish, and lampreys. Cyclostomes are primitive jawless fish that have a circular mouth with horny teeth and no scales. Hagfish are scavengers that secrete slime as a defense mechanism, while lampreys are known for their rasping tongue used to feed on the flesh of other fish. Other less common synonyms for agnathans include jawless vertebrates, gnathostome-lacking fish, and non-vertebrate chordates. Despite their unusual characteristics, agnathans play an important ecological role in marine ecosystems and have been studied extensively to understand the evolution of vertebrate jaws and craniofacial structures.
