Tus coj txawv txawv armored lobopodian ntawm tus Cambrian

Cambrian seas thaum ntxov (542-488 lab lub xyoo dhau los) tau ib plethora ntawm coj txawv txawv thiab bizarre creatures txawm tus zoo sci-fi dreamer yuav luag unimaginable. Tejzaum nws li ib tug ntawm cov precursors rau lub Arthropoda (tseem Onychophora thiab Tardigrada), cov lobopodian lineages sawv cev rau ib pawg uas coj txawv txawv “cua nab nrog ceg” ib zaug tias roamed cov hiav txwv ancient beds. Xyov zoo li cas lawv yuav tau muab qhov tseeb raws yog npe cia sib cav tswv yim (tsob ntoo hauv qab), tab sis qhov tshiab khiv sab genus thiab hom, Diania cactiformis (taug kev cactus), nruab nrab yog cov zoo tshaj plaws sclerotized thiab arthropod zoo li ntawm cov lus peb paub los lawm rau hnub.

Qhov ob thiab ib nrab hnub nti dab whopping pab peb nkag siab rau cov kev hloov ntawm ib tug mos bodied cab li zeej rau lub hard-shelled arthropod; Nws tseem yuav muaj zoo duab li cas miv no lobopodian yav yuav tau. Nws yog ib lo lus nug fascinating vim jointed tus kom zoo dua, sclerotized, nqua tau ib daig pob tawg lawm thiab diversified txawj creatures rau peb paub txog hnub no. Raws nraim li cas qhov no tshwm sim yog tsis muaj los ze zog mus tau zoo lawm, tiam sis nws zoo nkaus li txhais tau hais tias tus ceg ntawm cov tsiaj no yog sclerotized ua ntej lub cev (arthropodization vs. kev mob plawv). Ib me pob txha pheej nrhiav tau lwm thiab tsis tau lwm kev pom me me rau hauv keeb kwm evolutionary.

Chiv keeb

Liu, J., Steiner, M., Dunlop, J., khaws tseg, H., tshawb, D., Ou, Q., hav zoov, J., Zhang, Z., & Zhang, X. (2011). Tus armoured Cambrian lobopodian Suav teb uas zoo li arthropod yav Xwm, 470 (7335), 526-530 DOI: 10.1038/kwvyeej

Nyeem ntawv ntxiv: Ib lug txhawb cov miv blog rau tus lobopodian hauv Hungarian.