Palinologia dos sedimentos cenozóicos da Foz do Rio Amazonas

Regali, Marília da Silva Pares

doi:10.11606/t.44.2016.tde-09082016-150440

Cited by 61 publications

(120 citation statements)

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“…Van der Hammen, 1954, 1957, 1961a, b, c, 1970Van der Hammen and Wijmstra, 1964;GonzaH lez, 1967;Regali, et al, 1974;Van der Hammen and Cleef, 1983/84;Muller et al, 1987;Hoorn, 1990Hoorn, , 1993aHoorn, , b, 1994aHoorn, , b, c, 1996Hoorn et al, 1995). In the Paleocene several recent plant families and genera are recognized, such as Bombacaceae and Mauritia.…”

Section: Development Of the Neotropical 6ora And Vegetation During Thmentioning

confidence: 99%

Neogene and Quaternary history of vegetation, climate, and plant diversity in Amazonia

Hammen

Hooghiemstra

2000

Quaternary Science Reviews

279

120

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Section: Development Of the Neotropical 6ora And Vegetation During Thmentioning

confidence: 99%

Neogene and Quaternary history of vegetation, climate, and plant diversity in Amazonia

Hammen

Hooghiemstra

2000

Quaternary Science Reviews

279

120

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“…This could mean that Texas lay in a transition zone between the two provinces. The presence of more distinctive Gondwanan taxa, namely Sergipea and Tucanopollis, both first described from Brazil (Regali et al 1974;Regali 1989), indicates a floristic connection as well as similar climate. Another possible indication of floristic differentiation within North America is the prominent Glen Rose spore genus Acradosporites, originally described by Srivastava (1975) from the Goodland Limestone of Texas, which is not known in the Potomac.…”

Section: Paleoecology and Paleogeographymentioning

confidence: 94%

“…Inaperturate pollen with bilateral symmetry and three belts of thicker exine. First described from the Aptian and Albian of Brazil (Regali et al 1974). …”

Section: Palynologymentioning

confidence: 99%

“…Half-grains of this group may have been observed in the Potomac but mistaken for reticulate monosulcate pollen. There are also isolated grains of one or two species of Tucanopollis (Plate 4, figures 4, 5), first described from the Barremian and Aptian of Northern Gondwana (Regali et al 1974;Regali 1989). The lack of Potomac reports is probably due to non-recognition, since Friis et al (1995) found Tucanopollis pollen adhering to fruits named Appomattoxia from the Albian of Virginia.…”

Section: Correlation Of the Glen Rose Samples With The Potomac Group mentioning

confidence: 99%

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Early Cretaceous (Albian) spores and pollen from the Glen Rose Formation of Texas and their significance for correlation of the Potomac Group

Tanrikulu¹,

Doyle

Delusina

2017

Palynology

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Because the Gulf Coast Lower Cretaceous is dated by ammonites, it has great potential as a reference section for correlating continental sequences such as the Potomac Group and dating events in the rise of angiosperms. Middle Albian terrestrial palynofloras from Oklahoma have been described in detail, but the early Albian interval, represented in the Glen Rose Formation of Texas, is less well known. Samples from two localities on the Paluxy River, which correlate with horizons containing late early Albian ammonites, are dominated by Classopollis and Exesipollenites, but angiosperm pollen is the next most common terrestrial element, and there are several index spore species for Zone II in the Potomac Group. Among the angiosperms, reticulate monosulcates are most common and diverse, but there are also several tricolpate species. Stratigraphically important angiosperms include the Clavatipollenites rotundus group and reticulate tricolpates, which appear in the upper part of Potomac Zone I and the dated earliest Albian of England and Portugal. However, there are also tricolpates with striate-reticulate sculpture, a pollen type that is not known from upper Zone I but appears in the late early Albian of Portugal. This assemblage contrasts with floras from Potomac Zone II and the middle Albian (lower Fredericksburg Group) of Oklahoma, where tricolpates overtook monosulcate angiosperms in species diversity. These results confirm arguments based on the Portuguese section that there is a significant hiatus between Potomac Zones I and II, and that this gap is at least partly late early Albian. The dominance of Classopollis and Exesipollenites and the occurrence of isolated Northern Gondwanan elements (Sergipea, Tucanopollis) suggest that Texas lay in a transition zone between Southern Laurasia and the hotter and drier Northern Gondwana province, but regional studies are needed to disentangle geographic and climatic factors from effects of the lagoonal local environment.

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“…Genus TUCANOPOLLIS Regali, 1989 Type species. Tucanopollis crisopolensis (Regali et al) Regali, 1989 Remarks.…”

Section: Monosulcate and Monoporate Angiosperm Pollenmentioning

confidence: 99%

Barremian Angiosperm Pollen and Associated Palynomorphs from the Dakhla Oasis Area, Egypt

Schrank¹,

Mahmoud

2002

Palaeontology

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ABSTRACT. Pollen grains characteristic of the local pre-tricolpate, pre-Aptian phase of angiosperm evolution have been recovered from the upper part of the Six Hills Formation in the Dakhla Oasis area, Egypt. Highest abundance (up to 16´5 per cent) and diversity of angiosperm pollen is attained in samples from the Tineida 2 borehole, which also display a remarkable variety of different aperture types for a palyno¯ora of late Barremian age. Monosulcate, columellate tectates such as Retimonocolpites are most important, but a single trichotomosulcate grain as well as monoporate and inaperturate types that have not been reported from many coeval palyno¯oras, are also present. The following new taxa are described using same-grain SEM/LM techniques: Tucanopollis annulatus Schrank, sp. nov., Retimonocolpites pennyi Schrank and Mahmoud, sp. nov. and Retiacolpites columellatus Schrank, gen. et sp. nov. Phytogeographic links are closest with palyno¯oras previously described from the late Barremian of West Africa (Gabon, Congo), that is within the Northern Gondwana or Dicheiropollis etruscus/Afropollis Province.

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Palinologia dos sedimentos cenozóicos da Foz do Rio Amazonas

Cited by 61 publications

References 0 publications

Neogene and Quaternary history of vegetation, climate, and plant diversity in Amazonia

Neogene and Quaternary history of vegetation, climate, and plant diversity in Amazonia

Early Cretaceous (Albian) spores and pollen from the Glen Rose Formation of Texas and their significance for correlation of the Potomac Group

Barremian Angiosperm Pollen and Associated Palynomorphs from the Dakhla Oasis Area, Egypt

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