text: Yo, check it out, let me break it down for you
  Talkin' 'bout three species, gymnophallid crew
  In the Pacific Ocean, Macoma balthica's their home
  Similar to Baltic Sea, where they also roam
  
  With light and scanning electron microscopy
  We studied larvae anatomy, so you can see
  Two species of Lacunovermis, and Gymnophallus too
  Plus the adults of Lacunovermis, we brought 'em through
  
  Incubation on chick allantoic membrane, that's the way
  We compared and observed, every single day
  The third pair, Meiogymnophallus and Parvatrema
  We restudied 'em, brought 'em back to the drama
  
  Light microscopy, we used it right
  To check the differences, make sure they're tight
  In this study, we nullified what was said before
  Anatomical differences ain't there no more
  
  Lacunovermis conspicuus, Ching in '65
  We synonymized with Lacunovermis macomae, now alive
  Gymnophallus gibberosus, Loos-Frank in '71
  Synonymized with Gymnophallus somateriae, now it's done
  
  Meiogymnophallus multigemmulus, Ching in '65
  Synonymized with Parvatrema affinis, yo, take a dive
  Now it's M. affinis n. comb., new name in town
  That's how we do it, breaking it down
  
  So there you have it, the passage in rap form
  But the content stays the same, keepin' it warm
  Gymnophallid species, Pacific to Baltic Sea
  Anatomy studied, now you know the key