Ornithopoda muaj ntau pawg, suav nrog Fabrosauridae, Heterodontosauridae, Hypsilophodontidae, Iguanodontidae, thiab Hadrosauridae (duck-billed dinosaurs).
Qhov twg ntawm ornithopods yog Premaxilla?
Specialized puab tsaig: Premaxilla qis margin ventral rau maxilla qis npoo.
Leej twg yog Ornithopods dab tsi yog cov cim kev kuaj mob ntawm Ornithopoda Yuav ua li cas ornithopods cuam tshuam nrog lwm cov ornithischians?
Ornithopods, pachycephalosaurus, thiab ceratopsians suav nrog hauv ornithischian suborder ntawm cerapod. Ornithopods yog cov ornithischians tshwj xeeb los ntawm lawv txoj kev txav mus los, kev noj zaub mov zoo, thiab muaj nyob ntawm pubis ntawm thaj chaw pelvic, uas taw qhia rov qab.
Puas yog hadrosaurs bipedal?
Lub crested thiab "duck-billed" hadrosaurs yog iguanodonts. Ob peb ntawm cov no tau sau tseg rau thaj tsam dav thiab qhov txawv txav ntawm qhov sinus hauv lawv cov pob txha taub hau. Txhua tus ornithopods yog herbivores thiab feem ntau yog bipedal. … Kev txhais thaum ntxov ntawm fossil daim tawv nqaij impressions qhia tias hadrosaur ko taw tau webbed.
Dab tsi yog qhov txawv ntawm ornithopods?
'' Txhua tus Ornithischians, suav nrog ornithopods, muaj qhov tseem ceeb sib xws: lawv muaj qhov rov qab taw qhia pubis. Pubis, los yog pubic pob txha, yog ib feem ntawm lub plab mog. Ornithopods feem ntau yog bipedal dinosaurs. Hauv lwm yamcov lus, lawv taug kev ntawm ob txhais ceg, tab sis qee zaum yuav siv tag nrho plaub li koj yuav pom sai sai no.
