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absurd_res anthro balls balls_on_ground big_balls cerain ceratopsian ceratopsid chasmosaurine dinosaur donisette elephantid engine_(go-onger)engine_sentai_go-onger genitals group group_sex hi_res huge_balls hybrid kishamoth machine male male/male mammal mammoth marginocephalian markings medial_ring motion_lines nipples nude ornithischian penetration prehistoric_species proboscidean reptile saurischian scalie sex theropod train train_position triceratops trio tusks tyrain tyrannosaurid tyrannosauroid tyrannosaurus tyrannosaurus_rex vehicle