Ua ʻike nā paleontologists ʻAmelika i nā koena o kahi holoholona ʻano ʻē ma Texas, a lilo ia i mea kolo "ʻekolu maka". Ua ola ka holoholona ma kahi o 225 miliona mau makahiki i hala aku nei, ʻoiai ma mua o ka hoʻomaka ʻana o ke au dinosaur.
Ke hoʻoholo nei i nā ʻāpana i koe o ka iwi, aneane ʻaʻole ʻokoʻa ka mea kolo i ka helehelena mai nā pachycephalosaurs "butting", akā i ka manawa like ua like ia me ka crocodile. Hōʻike ka reptile Triopticus i ka hui ʻana ma waena o nā dinosaur a me nā lālā o ka genus crocodile i ʻoi aku ka nui ma mua o ka mea i manaʻo ʻia, wahi a Michelle Stoker o Virginia Tech. ʻOiai, nā hiʻohiʻona kikoʻī i hoʻokumu ʻia, e like me ka mea i manaʻoʻiʻo ʻia ma mua, i nā dinosaurs wale nō, ʻaʻole i ʻike ʻia i ke au o nā dinosaurs, akā i ka wā Triassic - ma kahi o 225 miliona mau makahiki i hala aku nei, ʻo ia ka mea ma mua.
Wahi a nā paleontologists, ʻo ka wā Triassic ka manawa hoihoi loa i ka mōʻaukala o ko ka honua honua honua, inā ʻoe e nānā aku mai ke kuanaʻike o ke ʻano o ka poʻe noho o ka honua i kēlā manawa. ʻO kahi laʻana, ʻaʻohe alakaʻi maopopo i waena o nā holoholona predatory. ʻO nā gorgonops niho-niho, nā alakaʻi kanalua o ka honua predatory o ka wā Paleozoic, haʻalele loa me ka luku nui Permian, a hoʻomaka nā hui like ʻole o nā archosaurs e hakakā no ka wahi hakahaka, i hoʻopili ʻia me nā dinosaurs a me nā kolo.
ʻO kahi laʻana maikaʻi loa o ka hoʻokūkū a laila hiki ke noʻonoʻo ʻia he nunui ʻekolu mika crocodile Carnufex carolinesis, a ʻo ia ka mea i kapa ʻia ʻo ka mea ʻoki manu ʻo Caroline. ʻO kēia holoholona, ma ke ʻano he koka, neʻe aku naʻe ia i kona mau lālā hope e like me ka dinosaur a ʻo ia nō ka piko o ka pyramid meaʻai o ka ʻāina ʻAmelika Hui Pū ʻIa 220-225 miliona mau makahiki i hala. Ua like ia me ka dinosaur-predator bipedal, e like me ka iguanodon, ma mua o kahi crocodile o kēia au.
He mea ʻē aʻe paha nā crocodile ʻē aʻe i waena o nā poʻe i loaʻa i kēia "crocosaur" - ʻo Triopticus "makaʻekolu" ia, a ua ʻike hewa ʻole ʻia nā koena i nā mea ʻeli e waiho malū ʻia ma kekahi o nā hale hōʻikeʻike ʻAmelika.
I ka helehelena, ua like loa ka triopticus me ka pachycephalosaurus, he iwi poʻo manoanoa kona. ʻO ka mānoanoa o kēia ʻāpana, e like me nā paleontologists, hiki i nā pachycephalosaurs ke hoʻopaʻa i kekahi i kekahi i nā kaua no ke alakaʻi a i ʻole ke kuleana e hui. Eia nō naʻe, ua ʻike ʻia kēia mau dinosaur i ka hoʻomaka ʻana o ka wā Cretaceous, ma kahi o hoʻokahi haneli miliona mau makahiki ma hope o ka nalowale ʻana o ka triopticus.
Eia nō naʻe, ʻaʻole i kaupalena ʻia nā mea like ma waena o ka crocodile "ʻekolu maka" a me ka pachycephalosaurus i ko lākou ʻano i waho. I ka pili ʻana o kahi tomograp X-ray i ka hihia, e hoʻomālamalama ana i ka iwi poʻo o Triopticus primus, ua ʻike ʻia he like ke ʻano o kona mau iwi me nā dinosaurs butting, a ʻo ka lolo, ʻaʻohe ona ʻano like wale nō, akā, he ʻano like. ʻO ka mea a kēia holoholona i ʻai ai a me ka nui i loaʻa iā ia, ʻaʻole ʻike maopopo nā paleontologists, ʻoiai e nalowale ana nā ʻāʻī o nā "ʻekolu maka" a me nā ʻāpana ʻē aʻe o kona kino. Eia nō naʻe, ʻo ka mea i loaʻa e hōʻike ana i ka evolution ʻaʻole i hoʻokoe ʻia a neʻe pinepine i nā mea ola ʻokoʻa i ke ala like, me ka hopena o kekahi mau holoholona, me nā kumu like ʻole, loaʻa i kekahi manawa ʻane like ka helehelena a me ka anatomy kūloko.
