The ultrastructure of in situ araucarian pollen from the male cone Callialastrobus sousai, Lower Cretaceous of Catefica, Lusitanian Basin, western Portugal

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00023272%3A_____%2F22%3A10135701" target="_blank" >RIV/00023272:_____/22:10135701 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0034666722001804?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0034666722001804?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.revpalbo.2022.104782" target="_blank" >10.1016/j.revpalbo.2022.104782</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The ultrastructure of in situ araucarian pollen from the male cone Callialastrobus sousai, Lower Cretaceous of Catefica, Lusitanian Basin, western Portugal

Popis výsledku v původním jazyce

Pollen morphology and ultrastructure are described for fossil pollen of the Araucariacites and Callialasporites types extracted from a Callialastrobus sousai pollen cone previously reported from the Lower Cretaceous Almargem Formation near the village of Catefica, in the Estremadura region, western Portugal. Pollen grains were studied with transmitted light and scanning and transmission electron microscopy. The pollen grains are medium-sized, being smaller and with a thicker exine in the Callialasporites type. Both pollen types appear inaperturate, although both polar regions are represented by a thinner exine. The exine sculpture (granulate/ microechinate) and ultrastructure (granular sexine and lamellate/homogeneous endexine) are generally the same in Araucariacites-and Callialasporites-type grains. Saccus-like structures in the Callialasporites-type pollen are formed by loosely arranged endexine lamellae, while Araucariacites-type pollen is asaccate. The exine structure of the Araucariacites-and Callialasporites-type grains also agrees well with that of known araucariaceous pollen.

Název v anglickém jazyce

The ultrastructure of in situ araucarian pollen from the male cone Callialastrobus sousai, Lower Cretaceous of Catefica, Lusitanian Basin, western Portugal

Popis výsledku anglicky

Pollen morphology and ultrastructure are described for fossil pollen of the Araucariacites and Callialasporites types extracted from a Callialastrobus sousai pollen cone previously reported from the Lower Cretaceous Almargem Formation near the village of Catefica, in the Estremadura region, western Portugal. Pollen grains were studied with transmitted light and scanning and transmission electron microscopy. The pollen grains are medium-sized, being smaller and with a thicker exine in the Callialasporites type. Both pollen types appear inaperturate, although both polar regions are represented by a thinner exine. The exine sculpture (granulate/ microechinate) and ultrastructure (granular sexine and lamellate/homogeneous endexine) are generally the same in Araucariacites-and Callialasporites-type grains. Saccus-like structures in the Callialasporites-type pollen are formed by loosely arranged endexine lamellae, while Araucariacites-type pollen is asaccate. The exine structure of the Araucariacites-and Callialasporites-type grains also agrees well with that of known araucariaceous pollen.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10506 - Paleontology

Projekt

<a href="/cs/project/GA20-06134S" target="_blank" >GA20-06134S: Paleoprostředí prvních angiosperm během střední křídy, případová studie na materiálu z Iberského poloostrova a střední Evropy</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Review of Palaeobotany and Palynology

ISSN

0034-6667

e-ISSN

—

Svazek periodika

307

Číslo periodika v rámci svazku

neuveden

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

12

Strana od-do

1-12

Kód UT WoS článku

000877800600002

EID výsledku v databázi Scopus

2-s2.0-85140274616