Lub sijhawm Jurassic thiab Thaum Ntxov Cretaceous ntau ntawm cov herbivorous dinosaurs-tshwj xeeb tshaj yog cov stegosaurs thiab sauropods-piv rau cov nroj tsuagzoo li cycads thiab conifers.
Dinosaurs Puas tau noj cov noob cycad?
Cycads yog ib pab pawg neeg qub ntawm cov noob nroj tsuag. Lawv tau tshwm sim thawj zaug hauv Pennsylvanian thiab yog li ntawd tau muaj nyob rau kwv yees li 300 lab xyoo, tshwm sim ua ntej muaj cov dinosaurs, uas muaj nyob ib sab ntawm lawv, thiab tej zaum tau noj los ntawm lawv.
Dinosaurs Puas tau noj nroj tsuag?
Ib txhia dinosaurs noj lizards, vaub kib, qe, los yog tsiaj thaum ntxov. Ib txhia yos hav zoov lwm dinosaurs los yog scavenged cov tsiaj tuag. Muaj, txawm li cas los xij, tau noj cov nroj tsuag (tab sis tsis yog nyom, uas tseem tsis tau hloov zuj zus).
Puas cycads laus dua dinosaurs?
Feem ntau yuam kev rau xibtes, cycads yog cov nroj tsuag uas muaj lub khob hliav qab uas tau loj hlob thaum lub sijhawm dinosaur, thiab tau muaj sia nyob hauv cov hnab ntim kub thiab cov chaw sov rau tam sim no. … “Lawv hloov zuj zus ntawm cov dinosaurs nkaus xwb 12 lab xyoo dhau los.
Puas muaj cycads hauv lub sijhawm Jurassic?
Thaum Mesozoic, lawv muaj ntau haiv neeg thiab suav txog li 20% ntawm lub ntiaj teb cov nroj tsuag thaum lub sijhawm Triassic thiab Jurassic. Qhov tseeb, Jurassic feem ntau hu ua "Age of Cycads." Cycads tej zaum yog ib qho khoom noj tseem ceeb rau ntau yam tsiaj txhu thaum lub sij hawm Jurassic.
