Txawm hais tias lawv superficially muaj cov duab zoo sib xws thiab lawv siv cov niches zoo sib xws, peb paub tias ichthyosaurs yog cov tsiaj reptiles thiab yog li lawv tsis yog ntses taub ntswg ntev (cov tsiaj nyeg) lossis sharks (ntses). … Txawm hais tias ntses tuaj nyob rau hauv txhua daim duab thiab qhov ntau thiab tsawg thiab ichthyosaurs feem ntau tshwj xeeb piv nrog sharks.
ichthyosaurs cuam tshuam dab tsi?
ichthyosaur, txhua tus tswvcuab ntawm ib pawg ntawm cov tsiaj reptiles uas ploj lawm, feem ntau zoo ib yam li porpoises hauv qhov tsos thiab tus cwj pwm. Cov txheeb ze nyob deb ntawm lizards thiab nab (lepidosaurs) yog cov tsiaj reptiles tshwj xeeb tshaj plaws, tab sis ichthyosaurs tsis yog dinosaurs.
Puas yog ichthyosaurs thiab dolphins homologous?
Apart from qhov pom tseeb zoo sib xws rau ntses, cov ichthyosaurs kuj shared parallel developmental features with dolphins. Qhov no ua rau lawv muaj qhov zoo sib xws, muaj peev xwm hais txog kev ua haujlwm zoo sib xws thiab xav tias muab tso rau lawv dav dav hauv ib qho chaw zoo sib xws.
Vim li cas ichthyosaurs zoo li ntses taub ntswg ntev?
Tshaj tawm sharks, ichthyosaurs, thiab ntses taub ntswg ntev tuaj zoo ib yam vim kev xaiv ntuj nyiam ib qho tshwj xeeb tshaj plaws rau lwm tus kom nrawm nrawm hla hiav txwv. Daim duab Legend: Convergent Evolution. Txawm tias sib txawv heev, tus ntses taub ntswg ntev thiab cov icthyasaur zoo ib yam.
ichthyosaurs thiab dolphins txawv li cas?
Ichthyosaurs yog ntses taub ntswg ntev-zoo li cov tsiaj reptiles pom nyob hauv pob zeb thoob plaws ntiaj teb. … Nws qhia tau hais tias daim tawv nqaij ichthyosaur tau ua los ntawm cov txheej txheem epidermal thiab dermal, ua ke hu ua cutus. Tsis muaj cov cim qhia ntawm nplai, hloov nws cov tawv nqaij zoo li tawv thiab rubbery zoo li ntses taub ntswg ntev.
