cephalochordates

URI: https://gptkb.org/entity/cephalochordates
GPTKB entity
Statements (32)
Predicate Object
gptkbp:instanceOf subfamily
gptkbp:circulatorySystem closed
gptkbp:closelyRelatedTo vertebrates
gptkbp:commonName lancelets
gptkbp:describedYear 1774
gptkbp:developedBy deuterostome
gptkbp:discoveredBy gptkb:Peter_Simon_Pallas
gptkbp:distinctiveFeature segmented muscles (myomeres)
lack of true head
persistent notochord
gptkbp:distribution worldwide, shallow seas
gptkbp:feedingType filter feeder
gptkbp:fossil Cambrian to present
gptkbp:genus gptkb:Asymmetron
gptkb:Branchiostoma
gptkb:Epigonichthys
gptkbp:habitat marine environments
https://www.w3.org/2000/01/rdf-schema#label cephalochordates
gptkbp:importantFor model for vertebrate evolution
gptkbp:kingdom gptkb:Animalia
gptkbp:larvalStage present
gptkbp:notochord present throughout life
gptkbp:numberOfSpecies about 30
gptkbp:phylum gptkb:Chordata
gptkbp:range 2 to 8 cm
gptkbp:reproduction sexual
gptkbp:respiration through skin and pharyngeal slits
gptkbp:shape bilateral symmetry
gptkbp:subphylumOf gptkb:Chordata
gptkbp:vertebralColumn absent
gptkbp:bfsParent gptkb:Branchiostoma_belcheri
gptkbp:bfsLayer 7