Lub sijhawm geological dab tsi tiktaalik hnub mus?
Lub sijhawm geological dab tsi tiktaalik hnub mus?

Video: Lub sijhawm geological dab tsi tiktaalik hnub mus?

Video: Lub sijhawm geological dab tsi tiktaalik hnub mus?
Video: nkauj hmoob dawb_nraug hmoob ntsuab - YouTube 2024, Lub peb hlis ntuj
Anonim

Tiktaalik . Tiktaalik (/t?kˈt?ːl?k/; Inuktitut ????? [tiktaːlik]) yog monospecific genus ntawm sarcopterygian uas ploj lawm (lobe-finned ntses) los ntawm lig Devonian Lub sijhawm , txog 375 Ma (lab xyoo dhau los), muaj ntau yam zoo ib yam li cov tetrapods (plaub-legged tsiaj).

Hais txog qhov no, dab tsi tshwj xeeb txog Tiktaalik?

Tiktaalik roseae yog zoo kawg nkaus khaws cia rau 375 lab-xyoo-laus fossil. Yog li , lub hav zoov ntawm tetrapod nta nyob rau hauv ib tug ntses zoo li Tiktaalik yog tseem ceeb vim tias nws cim qhov tshwm sim ntxov tshaj plaws ntawm cov yam ntxwv tshiab no hauv cov ntaub ntawv fossil.

Kuj Paub, leej twg pom Tiktaalik? Tshawb nrhiav hauv 2004 los ntawm Prof Shubin , Dr Edward Daeschler ntawm Drexel University, thiab lig Dr Farish A. Jenkins, Jr ., ntawm Harvard University, Tiktaalik roseae yog qhov zoo tshaj plaws-paub hom kev hloov pauv ntawm cov ntses thiab thaj av-tsev tetrapods. Tiktaalik roseae nyob hauv lub sijhawm Devonian ib ncig ntawm 375 lab xyoo dhau los.

Tsis tas li ntawd, dab tsi ua rau tiktaalik piv txwv ntawm daim ntawv hloov pauv?

Ua ntej, Tiktaalik yog piav qhia meej dua li ib daim ntawv hloov pauv dua ib qhov txuas uas ploj lawm. Tiktaalik , rau piv txwv , muaj fins nrog nyias ray pob txha, nplai, thiab gills zoo li feem ntau ntses. Txawm li cas los xij, nws kuj muaj cov pob txha pob txha, caj dab, lub xub pwg nyom, thiab cov tav tuab ntawm plaub-legged vertebrate.

Tau tiktaalik taug kev?

Nws tsis zoo li ntawd Tiktaalik nyob hauv av tag nrho. Tab sis lub fins pem hauv ntej qhov txwv ntau ntawm kev txav yuav tau tiv thaiv Tiktaalik los ntawm swinging nws fins rau pem hauv ntej mus taug kev zoo li tus amphibian ua.

Pom zoo: