I te tuatahi, he pai te whanaungatanga i waenga i a Cope raua ko Marsh. I tutaki raua i Berlin i te tau 1864 a he maha nga ra i noho tahi ai raua. I te wa kua kino o raua whanaungatanga, na te kaha o o raua tuakiri. I mohiotia a Cope he toa, he tere te riri; He puhoi a Marsh, he tikanga ake, he ngakau nui. He ruarua nga tautohetohe me te kore whakawhirinaki. I whakawhānuihia o raua rereketanga ki te ao putaiao, na te mea ko Cope te kaitautoko kaha o te Neo-Lamarckism i te wa i tautokohia e Marsh te ariā a Charles Darwin mo te whanaketanga ma te kowhiringa maori. Ahakoa i nga wa pai rawa atu, i hiahia nga tangata e rua ki te titiro ki raro ki tetahi atu. Ka rite ki te korero a tetahi kaitirotiro, "Kaore pea te rangatira o te whenua i whakaarohia e ia he tangata rangatira. Ko te kaiako a Edward Othniel Marsh i whakaarohia a Cope hei tangata rangatira, kaore i tino whai hua, na te mea i whanau mai i tana papa ki te whanau o Peabody Peab
he puhoi ake, he whai tikanga ake, he tūtohu