Revisão da paleoflora das formações Missão Velha, Crato e Romualdo, Bacia do Araripe, Nordeste do Brasil

Lima, Flaviana Jorge de; Saraiva, Antônio Álamo Feitosa; Sayão, Juliana Manso

doi:10.18190/1980-8208/estudosgeologicos.v22n1p99-115

Cited by 38 publications

(17 citation statements)

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“…Essa família teve uma ampla distribuição geográfica, sendo particularmente abundante em camadas pertencentes ao EoCretáceo. A espécie foi descrita a partir de fósseis encontrados em Portugal (Lima et al 2012). Na Bacia do Araripe, fósseis de B. obesum foram registrados inicialmente no Membro Romualdo (Duarte1985) e posteriormente no Mem- mais claras as características morfológicas, que por vezes, são confusas no fóssil, além de gerar uma familiarização do ilustrador com essas estruturas, possibilitando uma maior facilidade em representá--las em desenhos mais elaborados executados posteriormente (Fig.…”

Section: Reconstrução De Brachyphylum Obesum Como Modelo De Reconstruunclassified

Descrição dos métodos paleoartísticos para reconstruções de animais e vegetais fósseis

Martine

Ricardi-Branco

2017

Terrae Didat.

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Since the second half of the 19 th century, paleontologists have been using drawings and paintings to reconstruct extinct organisms. These types of techniques are nowadays informally called paleoartistic reconstruction. The specimens reconstructed through scientific illustrations go beyond specialized literature to reach popular knowledge, having become an important tool for scientific dissemination. Due to the shortage of academic material about this subject in Brazil, the present work describes, through compared anatomy, the concepts and steps of the paleoartistic reconstruction processes, using three Brazilian fossil organisms as models -a dinosaur sauropoda (Aeolosaurus maximus), a bivalve mollusk (Itaimbea priscus), and a gymnosperm (Brachyphyllum obesum). The methodology applied to the reconstruction of these organisms can be applied to the reconstruction of any animal or plant fossil

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Section: Reconstrução De Brachyphylum Obesum Como Modelo De Reconstruunclassified

Descrição dos métodos paleoartísticos para reconstruções de animais e vegetais fósseis

Martine

Ricardi-Branco

2017

Terrae Didat.

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“…Naish et al, 2004). In addition, fossils of invertebrates (Beurlen, 1964(Beurlen, , 1966Coimbra et al, 2002) and vegetables (Lima et al, 2012) are found, and there are possible occurrences of amber (Castro et al, 1970).…”

Section: Brief Survey Of Romualdo Formation Fossilsmentioning

confidence: 99%

Biomechanical and physiological influences on the osteohistological deposition of Anhangueria (Pterosauria, Pterodactyloidea)

Eleutério¹,

Bantim²,

Lima³

et al. 2015

Rev. bras. paleontol.

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-The study of bone microstructure preserved in fossils provides substantial information about physiology, growth gradients and strategies, and some ecological considerations. Paleohistology is a useful tool for understanding the biological mechanisms of extinct animals. Presented here is the microstructure characterization of two Anhangueria pterosaurs. Thin sections of the fi rst wing phalanx and metacarpal IV of MN 7060-V have been confectioned, as have sections of the radius, ulna and fi rst wing phalanx of MPSC R2090. The histological analysis of bones of MN 7060-V revealed fi brolamellar tissue, few osteocytes and vascular canals. Bones of MPSC R2090 showed a mixed plexiform-fi brolamellar tissue and histovariability, showing that bones from the same individual grew in different patterns. The vascularization was high in the phalanx, intermediate in the ulna and absent in the radius. The absence of canals in the radius may be related to biomechanical issues, due to torsion resistance during fl ight. The histology and the absence of fused bones suggests that the specimens are not adults. Two distinct moments of growth were established. MN 7060-V is a subadult, with presence of bone porosity and MPSC R2090 is a young animal as determined by the high number of canals and plexiform-fi brolamellar tissues, which indicates fast growth. In this work, we concluded that in the Anhangueria clade, the growth of bones is not compatible with the ontogenetic stage. Young animals may present large proportions, whereas there were older individuals of smaller sizes in the same clade.Key words: paleohistology, Pterosauria, Anhangueria, Romualdo Formation, Araripe Basin.RESUMO -O estudo da microestrutura óssea preservada em organismos fósseis traz informações substanciais sobre a fi siologia, gradientes e estratégias de crescimento e uma série de considerações ecológicas. Para o entendimento dos mecanismos biológicos de animais extintos utiliza-se a paleohistologia. Apresentamos a caracterização microestrutural de dois pterossauros do clado Anhangueria. Foram confeccionadas lâminas da primeira falange alar e IV metacarpal de MN 7060-V, além da ulna, rádio e primeira falange alar de MPSC R2090. A análise histológica de ambos os ossos de MN 7060-V exibiu tecido fi brolamelar, poucos osteócitos e canais. Já os ossos de MPSC R2090 apresentaram tecido fi brolamelar plexiforme e histovariabilidade, sugerindo diferentes taxas de crescimento para os ossos de um mesmo indivíduo. A vascularização na falange foi elevada, intermediária na ulna e ausente no rádio. Essa ausência de canais pode estar relacionada a pressões biomecânicas, devido a resistência às cargas de torção exercidas durante o voo. A histologia e a ausência de fusão dos ossos sugerem indivíduos não adultos. Dois momentos diferentes de crescimento foram então estabelecidos. MN 7060-V é um subadulto, com presença de porosidade óssea e MPSC R2090 um jovem, devido à alta vascularização e tecido fi brolamelar plexiforme, indicativo de crescimento rápido. Foi concluído...

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“…The paleoflora of the Crato Formation comprises representatives of ferns, gymnosperms and angiosperms, with a gymnosperm predominance (Lima 1978, Lima et al 2012. Palynological and macrofloral data reveal a great variety of ferns and seed plants (Lima 1989, Mohr and Bernardes-de-Oliveira 2004, Batten 2007, Mohr et al 2007, Heimhofer and Hochuli 2010.…”

Section: Angiosperms From the Crato Formationmentioning

confidence: 99%

A new angiosperm from the Crato Formation (Araripe Basin, Brazil) and comments on the Early Cretaceous Monocotyledons

Lima

Saraiva

Silva

et al. 2014

An. Acad. Bras. Ciênc.

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The Crato Formation paleoflora is one of the few equatorial floras of the Early Cretaceous. It is diverse, with many angiosperms, especially representatives of the clades magnoliids, monocotyledons and eudicots, which confirms the assumption that angiosperm diversity during the last part of the Early Cretaceous was reasonably high. The morphology of a new fossil monocot is studied and compared to all other Smilacaceae genus, especially in the venation. Cratosmilax jacksoni gen. et sp. nov. can be related to the Smilacaceae family, becoming the oldest record of the family so far. Cratosmilax jacksoni is a single mesophilic leaf with entire margins, ovate shape, with acute apex and base, four venation orders and main acrodromous veins. It is the first terrestrial monocot described for the Crato Formation, monocots were previously described for the same formation, and are considered aquatics. Cratosmilax jacksoni is the first fossil record of Smilacaceae in Brazil, and the oldest record of this family.

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Revisão da paleoflora das formações Missão Velha, Crato e Romualdo, Bacia do Araripe, Nordeste do Brasil

Cited by 38 publications

References 0 publications

Descrição dos métodos paleoartísticos para reconstruções de animais e vegetais fósseis

Descrição dos métodos paleoartísticos para reconstruções de animais e vegetais fósseis

Biomechanical and physiological influences on the osteohistological deposition of Anhangueria (Pterosauria, Pterodactyloidea)

A new angiosperm from the Crato Formation (Araripe Basin, Brazil) and comments on the Early Cretaceous Monocotyledons

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