Cov ungulates txawm-toed yog ungulates-hoofed tsiaj-uas hnyav sib npaug ntawm ob ntawm lawv tsib ntiv taw: thib peb thiab plaub. Lwm qhov peb ntiv taw yog tam sim no, tsis tuaj, vestigial, lossis taw tes tom qab. Los ntawm qhov sib txawv, khib-toed ungulates dais qhov hnyav ntawm tus lej khib ntawm tsib ntiv taw.
Ntxhais ntiv taw txhais li cas?
: muaj ntau tus ntiv taw ua haujlwm ntawm txhua ko taw Hippos yog artiodactyls, lossis txawm-toed ungulates … -
Lub ntsiab lus ntawm tus ntiv taw ntiv taw yog dab tsi?
Tus txawm-toed ungulates (Artiodactyla /ˌɑːrtioʊˈdæktɪlə/, los ntawm Ancient Greek ἄρτιος, ártios 'txawm', thiab δάκτυλος, dáktylos 'ntiv tes, ntiv taw') beared ungsib npaug ntawm ob (tus lej tus lej) ntawm lawv tsib ntiv taw: qhov thib peb thiab plaub.
Yuav ua li cas yog tsiaj txhu hu ua?
artiodactyl, txhua tus tswvcuab ntawm cov tsiaj nyeg Artiodactyla, lossis txawm-toed ungulates, uas suav nrog npua, peccaries, hippopotamuses, ntxhuav, chevrotains, mos lwj, giraffes, pronghorn, antelopes, yaj, tshis, thiab nyuj.
Tus yam ntxwv ntawm Artiodactyla yog dab tsi?
Artiodactylaeven-toed ungulates
- Artiodactyls yog cov tsiaj muaj sia nyob niaj hnub no, muaj ntau haiv neeg, loj thiab loj. …
- Artiodactyls yog paraxonic, uas yog, lub dav hlau ntawm symmetry ntawm txhua ko taw hla ntawm tus lej thib peb thiab plaub. …
- Artiodactyls muab faib ua 3 suborders.
