. _:b75870561 . . _:b75870561 "GBIF id" . "Ptilocrinus Clark, 1907" . . . . _:b76585424 . "Ptilocrinus" . . "Ptilocrinus" . _:b75870561 . "Ptilocrinus" . "173917" . . . . _:b76585424 "173917" . . _:b76585424 . _:b75870561 . _:b76585424 . "837939" . _:b75870561 "3249953" . . "3249953" . "Clark, 1907" . _:b76585424 "WoRMS id" .