The Nossa Senhora da Luz flora from the Early Cretaceous (early Aptian-late Albian) of Juncal in the western Portuguese Basin
Abstract
A new fossil flora is described from the Early Cretaceous of the western Portuguese Basin, based on a combined palynological-mesofossil study. The fossil specimens were extracted from samples collected in the Nossa Senhora da Luz opencast clay pit complex near the village of Juncal in the Estremadura region. The plant-bearing sediments belong to the Famalicão Member of the Figueira da Foz Formation, considered late Aptianearly Albian in age. The palynological assemblage is diverse, including 588 spores and pollen grains assigned to 30 genera and 48 species. The palynoflora is dominated by fern spores and conifer pollen. Angiosperm pollen is also present, but subordinate. The mesofossil flora is less diverse, including 175 specimens ascribed to 17 species, and is dominated by angiosperm fruits and seeds. The mesofossil flora also contains conifer seeds and twigs as well as fossils with selaginellaceous affinity. The fossil assemblage indicates a warm and seasonally dry climate for the Nossa Senhora da Luz flora.
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BATTEN D.J. & UWINS P.J.R. 1985. Early-Late Cretaceous (Aptian–Cenomanian) palynomorphs. J. Micropaleont. 4: 151–167.
-
DINIS J.L. 1999. Estratigrafia e sedimentologia da Formação de Figueira da Foz. Aptiano a Cenomaniano do sector norte da Bacia Lusitânica. Dissertação de Doutoramento. Universidade de Coimbra Portugal.
-
DINIS J.L. 2001. Definição da Formação de Figueira da Foz – Aptiano a Cenomaniano do sector central da margem oeste ibérica. Comunicações do Instituto Geológico e Mineiro 88: 127–160.
-
DINIS J. REY J. & DE GRACIANSKY P.-C. 2002. Le Bassin lusitanien (Portugal) à l’Aptien supérieur-Albien: organisation séquentielle proposition de corrélations évolution. C.R. Geoscience 334: 757–764.
-
DINIS J.L. REY J. CUNHA P.P. CALLAPEZ P.M. & PENA DOS REIS R. 2008. Stratigraphy and allogenic controls on the western Portugal Cretaceous: an updated synthesis. Cretaceous Research 29: 772–780.
-
DINIS J.L. & TRINCÃO P. 1991. Controlos deposicionais e biostratigráfia da base dos “grés belasianos” (Aptiano Bacia Lusitaniana). Comunicações dos Serviços Geológicos de Portugal 77: 89–102.
-
ERIKSSON O. FRIIS E.M. PEDERSEN K.R. & LÖFGREN P. 2000a. Seed size fruit size and dispersal spectra in angiosperms from the Early Cretaceous to the Late Tertiary. Am. Nat. 156: 47–58.
-
ERIKSSON O. FRIIS E.M. PEDERSEN K.R. & CRANE P.R. 2000b. Seed size and dispersal systems of Early Cretaceous angiosperms from Famalicão Portugal. Int. J. Plant Sci. 161: 319–329.
-
FRIIS E.M. & PEDERSEN K.R. 1990. Structure of the Lower Cretaceous fern Onychiopsis psilotoides from Bornholm Denmark. Rev. Palaeobot. Palynol. 66: 47–63.
-
FRIIS E.M. & PEDERSEN K.R. 2011. Canrightia resinifera gen. et sp. nov. a new extinct angiosperm with Retimonocolpites-type pollen from the Early Cretaceous of Portugal: missing link in the eumagnoliid tree? Grana 50: 3–29.
-
FRIIS E.M. CRANE P.R. & PEDERSEN K.R. 1997. Anacostia a new basal angiosperm from the Early Cretaceous of North America and Portugal with trichotomocolpate/monocolpate pollen. Grana 36: 225–244.
-
FRIIS E.M. CRANE P.R. & PEDERSEN K.R. 2011. Early flowers and angiosperm evolution. Cam-bridge University Press Cambridge x + 585 pp.
-
FRIIS E.M. CRANE P.R. & PEDERSEN K.R. 2017. Saportanthus an Extinct Genus of Laurales from the Early Cretaceous of Portugal. Int. J. Plant Sci. 78: 650–672.
-
FRIIS E.M. CRANE P.R. & PEDERSEN K.R. 2018a. Early angiosperm diversity: evidence of extinct taxa close to Austrobaileyales and Nymphaeales based on exotestal seeds from the Early Cretaceous of Portugal. Fossil Imprint.
-
FRIIS E.M. CRANE P.R. & PEDERSEN K.R. 2018b. Fossil seeds with affinities to Austrobaileyales and Nymphaeales from the Early Cretaceous (early-middle Albian) of Virginia and Maryland U.S.A: new evidence for extensive extinction near the base of the angiosperm tree: 417–435 In: M. Krings C.J. Harper N.R. Cúneo and G.W. Rothwell (eds) Transformative Paleobotany: Papers to Commemorate the Life and Legacy of Thomas N. Taylor Academic Press Burlington MA.
-
FRIIS E.M. CRANE P.R. & PEDERSEN K.R. (accepted). Extinct diversity among Early Cretaceous angiosperms: mesofossil evidence of early Magnoliales from Portugal. International Journal of Plant sciences.
-
FRIIS E.M. PEDERSEN K.R. & CRANE P.R. 1994. Angiosperm floral structures from the Early Cretaceous of Portugal. Plant Syst. Evol. Supplement 8: 31–49.
-
FRIIS E.M. PEDERSEN K.R. & CRANE P.R. 1999. Early angiosperm diversification: the diversity of pollen associated with angiosperm reproductive structures in Early Cretaceous floras from Portugal. Ann. Mo. Bot. Gard. 86: 259–296.
-
FRIIS E.M. PEDERSEN K.R. & CRANE P.R. 2000. Fossil floral structures of a basal angiosperm with monocolpate reticulate-acolumellate pollen from the Early Cretaceous of Portugal. Grana 39: 226–239.
-
FRIIS E.M. PEDERSEN K.R. & CRANE P.R. 2006. Cretaceous angiosperm flowers: Innovation and evolution in plant reproduction. Palaeogeogr. Palaeoclimat. Palaeoecol. 232: 251–293.
-
FRIIS E.M. PEDERSEN K.R. & CRANE P.R. 2010. Cretaceous diversification of angiosperms in the western part of the Iberian Peninsula. Rev. Palaeobot. Palynol. 162: 341–361.
-
FRIIS E.M. GRIMM G.W. MENDES M.M. & PEDERSEN K.R. 2015. Canrightiopsis a new Early Cretaceous fossil with Clavatipollenites-type pollen bridge the gap between extinct Canrightia and extant Chloranthaceae. Grana 54: 184–212.
-
MENDES M.M. FRIIS E.M. & PAIS J. 2008a. Erdtmanispermum juncalense sp. nov. a new species of the extinct order Erdtmanithecales from the Early Cretaceous (probably Berriasian) of Portugal. Rev. Palaeobot. Palynol. 149: 50–56.
-
MENDES M.M. PAIS J. & FRIIS E.M. 2008b. Raunsgaardispermum lusitanicum gen. et sp. nov. a new seed with in situ pollen from the Early Cretaceous (probably Berriasian) of Portugal: Further support for the Bennettitales-Erdtmanithecales-Gnetales link. Grana 47: 211–219.
-
MENDES M.M. DINIS J. PAIS J. & FRIIS E.M. 2011. Early Cretaceous flora from Vale Painho (Lusitanian Basin western Portugal): an integrated palynological and mesofossil study. Rev. Palaeobot. Palynol. 166: 152–162.
-
MENDES M.M. DINIS J. PAIS J. & FRIIS E.M. 2014. Vegetational composition of the Early Cretaceous Chicalhão flora (Lusitanian Basin western Portugal) based on palynological and mesofossil assemblages. Rev. Palaeobot. Palynol. 200: 65–81.
-
REY J. DINIS J.L. CALLAPEZ P. & CUNHA P.P. 2006. Da rotura continental à margem passiva. Composição e evolução do Cretácico de Portugal. Cadernos de Geologia de Portugal INETI Lisboa 75 pp.
-
SCHRANK E. & MAHMOUD M.S. 1998. Palynology (pollen spores and dinoflagellates) and Cretaceous stratigraphy of the Dakhla Oasis Central Egypt. J. Afr. Earth Sci. 26: 167–193.
-
TAYLOR W.A. & TAYLOR T.N. 1988. Ultrastructural analysis of selected Cretaceous megaspores from Argentina. J. Micropalaeontol. 7: 73–87.
-
TEIXEIRA C. 1950. Flora Mesozóica Portuguesa Parte II. Memórias dos Serviços Geológicos de Portugal Lisboa 33 pp.
-
TRAVERSE A. 2007. Paleopalynology. Springer: Dordrecht Netherlands.
-
WATSON J. & ALVIN K.L. 1996. An English Wealden floral list with comments on the possible environmental indicators. Cretaceous Research 17: 5–26.
-
ZBYSZEWSKI G. FERREIRA O.V. MANUPPELLA G. & TORRE DE ASSUNÇÃO C. 1961. Carta Geológica de Portugal na escala 1:50 000. Notícia explicativa da folha 26-B (Alcobaça). Serviços Geológicos de Portugal Lisboa.
