"Ptychocardia Thiele, 1912" . _:b76657789 "WoRMS id" . . _:b75770355 . "Thiele, 1912" . "4371409" . "Ptychocardia" . . . _:b76657789 . . _:b76657789 . . . "Ptychocardia" . . _:b75770355 "GBIF id" . "834587" . . _:b75770355 . _:b76657789 "196908" . . _:b75770355 . _:b75770355 "4371409" . _:b76657789 . . . "196908" . "Ptychocardia" .