Ntau ntses jawless tam sim no ploj lawm; tab sis cov lampreys uas tseem tshuav yuav kwv yees li cov ntses ua ntej lub puab tsaig. … Nws yog los ntawm cov ntses lobe-finned uas tetrapods hloov zuj zus, plaub-limbed vertebrates, sawv cev niaj hnub no los ntawm amphibians, tsiaj reptiles, mammals, thiab noog.
Lampreys hloov zuj zus los ntawm dab tsi?
Txhua hom tsiaj Northern Hemisphere tshwm sim los ntawm parasitic, cov poj koob yawm txwv pub ntshav zoo ib yam li hiav txwv lamprey (Petromyzon marinus) hauv Dej Hiav Txwv Atlantic lossis Ichthyomyzon spp. nyob rau hauv cov dej tshiab ntawm sab hnub tuaj North America (Potter thiab Hilliard 1987; Renaud li al. 2009).
Dab tsi tshwm sim tom qab amphibians?
THIAB KOJ PAUB TIAS yog….. Cov lus teb raug yog Cov tsiaj reptiles thiab Mammals. Nws tau hais tias Txoj cai tom qab amphibian evolution tuaj rau lub qe amniotic uas tso cai rau cov tsiaj reptiles thaum ntxov txav. Cov tsiaj reptiles thaum ntxov yog ib feem ntawm pawg hu ua cotylosaurs.
Puas yog lampreys amphibians?
Lwm cov vertebrate superclass yog Gnathostomata (lub puab tsaig lub puab tsaig) thiab suav nrog cov chav kawm Chondrichthyes (sharks), Osteichthyes (bony fishes), Amphibia, Reptilia, Aves, thiab Mammalia. Qee cov kws tshawb fawb tau faib cov lampreys ua ib tus neeg sawv cev ntawm Linnean chav Cephalaspidomorphi.
Puas yog ntses ntses evolve los ntawm amphibians?
The Bony Fish
Npaj-finned ntses kuj yog yawm txiv rau amphibians. Lawv cov pob txha zoo li appendages thiab lub ntsws zoo licov kabmob hloov mus rau hauv amphibian ob txhais ceg thiab lub ntsws. Ray-finned bony ntses tej zaum yuav yog thawj ntses los hloov zuj zus hauv dej tshiab. Thaum kawg lawv tau los ua cov ntses ntau haiv neeg thiab tseem ceeb tshaj plaws.
