Belongs within: Cyclostomata. The Petromyzontidae, lampreys, are eel-like vertebrates with a filter-feeding freshwater larval stage that develops into non-feeding or parasitic, often marine, adults (Bond 1996). The dangers of indulgence Published 21 May 2025 History contains a number of records of monarchs who met their demise in unexpected ways. The Roman emperor Carus was killed… Continue reading Petromyzontidae
Category: Cyclostomata
Cyclostomata
Belongs within: Craniata.Contains: Myxinidae, Petromyzontidae. Tully as a vertebrate Published 17 March 2016 Several years ago, I included the ‘Tully monster’ Tullimonstrum gregarium in a list of some of the most phylogenetically mysterious organisms on the planet. Multiple suggestions have been made as to its affinities: mollusc, annelid, nemertean (nemerteans and sea cuumbers both having… Continue reading Cyclostomata