. . "Gypceros is the heaviest of all known Bird Wyverns. It is the closest relative to the extinct Bajirisu, even sharing Bajirisu's same body shape though lacking a hard shell."@en . . "Gypceros Ecology"@en . . "Gypceros is the heaviest of all known Bird Wyverns. It is the closest relative to the extinct Bajirisu, even sharing Bajirisu's same body shape though lacking a hard shell."@en .