Abundance of spores and araucariacean pollen are transitional features between those in North Gondwana and Southern Laurasia but, unlikely, typical transitional assemblages lack bisaccates conifers and have Gleicheniaceae spores. Palynofloras from Siqeifa 1-X borehole, with Afropollis pollen and elaterates, are of North African aspect and share the broad characteristics of the "Albian-Cenomanian Elaterates Province" of Herngreen et al. This is probably due to the palaeogeographic position of Egypt during Early Cretaceous times or, to a local reason. They appear in groups and various sizes, posing no threat to any nearby creatures. The spore density from the dry deciduous woodlands of northern Ethiopia. Their body seems to bulge in a manner similar to breathing. This paper examined the arbuscular mycorrhiza fungi (AMF) spore density and root. They consist of a spherical, beige body with a concave tip, connected to a surface by five dark brown root-like legs. A warm humid palaeoclimate was inferred during deposition of the investigated succession of the borehole, in contrast to the known warm arid to semi-arid climate, suggested for the Northern Gondwana Realm during Early Cretaceous times. spores in Western, Northern and Central-Eastern Poland in 2004-2006 and relation to some meteorological factors. Spores are stationary alien organisms seen in the alien world Xen. The vertical distribution of terrestrial and marine palynomorphs, along with palynodebris, reflects two regressive marginal marine cycles during Berriasian-Barremian and Albian-lower Cenomanian times whereas the Aptian witnessed a transgressive open marine (inner shelf) environment. The palynofloras enabled the recognition of five spore-pollen and four dinoflagellate zones, which are correlated with regional records, mainly from Egypt and Libya. The lowest occurrences of the pollen Afropollis jardinus, the spore Crybelosporites pannuceus and elaterates such as Elaterosporites klaszii, Elaterocolpites castelainii and Elateroplicites africaensis characterize the Albian/lower Cenomanian interval. Relatively few detailed accounts of Silurian trilete spores, spore. 2016), 19 years in Northern Italy (Marchesi, 2020) and 8 years or more in Southern France (Sindt et al., 2016). Afropollis operculatus/zonatus pollen and spores such as Balmeisporites holodictyus, Trilobosporites laevigatus and Duplexisporites generalis are diagnostic of Aptian. fragments from northern Indiana, and their paleobotanical implications. selaginoides produces spores in spore cones and have two distinct generations sporophyte and gametophyte. If youre wondering why lions have such long and lustrous manes, read on to learn more about the elusive fungus. Spore concentration metrics, relevant seasonal dates and meteorological variable correlations with concentrations were also extracted for downstream meta-analyses. Dinoflagellate cysts such as Subtilisphaera senegalensis was regarded, with the spores Impardecispora apiverrucata and Aequitriradites spinulosus, as important Berriasian to Barremian species. Spores, Pollen, Dinoflagellate cysts, Age assessments, Palynology, Lower Cretaceous, Egypt AbstractÄiverse and well preserved palynofloras were recognized in the Lower Cretaceous succession penetrated by well Siqeifa 1-X in northern Egypt.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |