WoRMS taxon details
basis of record
Poss, S. G.; Boschung, H. T. (1996). Lancelets (Cephalochordata: Branchiostomatidae): How many species are valid?. <em>Isr. J. Zool.</em> 42 (Suppl): S13-S66. [details]
additional source
van der Land, J. (ed). (2008). UNESCO-IOC Register of Marine Organisms (URMO). , available online at http://www.marinespecies.org/urmo/ [details]
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