Ama-dinosaur abusa umhlaba isikhathi eside kangakanani?
Context:Ama-dinosaurs yiqembu elihlukahlukene lezilwane ezihuquzelayo[note 1] ze-clade Dinosauria. Yaqala ukuvela phakathi nenkathi yeTriassic, phakathi kweminyaka eyizigidi ezingama-245 nezingama-233.23 edlule (mya), yize umsuka oqondile nesikhathi sokuziphendukela kwemvelo kwama-dinosaurs kuyindaba yocwaningo olusebenzayo. Yaba yizilwane ezinomgogodla ezihamba phambili emhlabeni ngemva kwesenzakalo sokushabalala kweTriassic-Jurassic eminyakeni eyizigidi ezingu-201.3 edlule futhi ukubusa kwayo kwaqhubeka kuyo yonke inkathi yeJurassic neCretaceous. Umlando wezinsalela ubonisa ukuthi izinyoni zingama-dinosaurs anezimpaphe, ezavela kuma-theropod akuqala ngenkathi ye-Late Jurassic, futhi ukuphela kohlu lozalo lwama-dinosaur olwaziwa ukuthi lwasinda emcimbini wokuqothulwa kwe-Cretaceous-Paleogene cishe eminyakeni eyizigidi ezingama-66 edlule. Ngakho-ke, ama-dinosaur angahlukaniswa abe ama-dinosaur ezinyoni - izinyoni - kanye nama-dinosaur angaphili, okuyiwona wonke ama-dinosaur ngaphandle kwezinyoni.
Ama-dinosaur ayeyizinhlobo zezilwane eziphila emhlabathini iminyaka engaba izigidi ezingu-135,3.