Rhynia yog ib hom kab mob ntawm Silurian thiab Devonian vascular nroj tsuag uas muaj nyob rau fossil pteridophyte. … Nws tau pom tias cov nroj tsuag no muaj cov yam ntxwv anatomical zoo dua li cov bryophytes tam sim no nyob rau lub sijhawm ntawd.
Puas Rhynia yog pob txha?
Rhynia is a genus of Early Devonian fossil land plants. Tsuas yog ib hom neeg paub, R. gwynne-vaughanii. Cov pob txha yog cov tiam sporophyte ntawm cov nroj tsuag vascular.
Psilotum Puas yog pob txha muaj sia?
Psilotum yog tsuas yog cov nroj tsuag muaj sia nyob kom tsis muaj nplooj thiab cov cag thiaj li hu ua fossils nyob.
Dab tsi yog pob txha ntawm Pteridophytes?
Calamitales yog cov pob txha pteridophytes uas tau arborescent nyob rau hauv lub sij hawm Devonian, tag nrho thiab cov hav zoov loj ntawm calamitales tuaj yeem pom nyob rau hauv lub sijhawm ntawd. Lawv yog cov nroj tsuag tseem ceeb ntawm lub hauv paus ntawm cov thee swamps ntawm lub sijhawm carboniferous [31-36].
Pteridophytes tseem hu ua dab tsi?
Pteridophytes tseem hu ua cryptogams. … 'Cryptogams' yog lo lus siv rau cov nroj tsuag uas tsis tsim paj thiab noob. Yog li, nws tau xav tias lawv cov kev tsim tawm raug zais thaum lawv tsim cov spores.
