نتایج جستجو برای: aptian

تعداد نتایج: 457  

Journal: :Revista del Museo Argentino de Ciencias Naturales 2005

Journal: :Bulletin of the British Museum (Natural History) Geology 1993

Journal: :Cretaceous Research 2022

The Hauterivian–Aptian Isachsen Formation at Glacier Fiord, Axel Heiberg Island, in the Sverdrup Basin of Canadian Arctic Archipelago was deposited contemporaneous with initiation High Large Igneous Province (HALIP). New palynological biostratigraphy and paleoenvironmental reconstruction, coordination emerging geochronology HALIP igneous rocks, permits exploration effects volcanism on vegetatio...

2000
J. M. Castro M. Company G. A. de Gea R. Aguado

The biostratigraphy of platform carbonates and adjacent basins outcropping in the Prebetic Zone of Alicante, south-eastern Spain, is presented. With this aim, 42 sections from 13 major outcrops, of Aptian–Middle Cenomanian age, were analysed. Ten biostratigraphic units based upon benthonic foraminifers have been distinguished within this interval. Comparison with other previously published bioz...

2008
Anthony J. Martin Thomas H. Rich Gary C.B. Poore Mark B. Schultz Christopher M. Austin Lesley Kool Patricia Vickers-Rich

Early Cretaceous body and trace fossils in Victoria, Australia, establish the oldest known presence of parastacid crayfish (Decapoda: Astacidea, Parastacoidea) in freshwater environments of Australia, and the oldest known crayfish in Gondwana. Parastacid body fossils, comprised of a partial abdomen (Palaeoechinastacus australianus, gen. et sp. nov.) and two chelae, are from a fluvial deposit in...

Journal: :Anais da Academia Brasileira de Ciencias 2012
Tiago R Simões

The record of Gondwanan Mesozoic lizards is very poor. Among the few species described for this region there is Tijubina pontei, an Early Cretaceous lizard from the Crato Formation (late Aptian) of northeast Brazil. Its description is very brief and lacks most of its diagnostic characters and clear delimitation from other lizard species. Here, a full redescription of the holotype is provided. T...

2014
Xiaolin Wang Taissa Rodrigues Shunxing Jiang Xin Cheng Alexander W. A. Kellner

The Aptian Jiufotang Formation of northeast China is a Konservat Lagerstätte particularly rich in pterosaurs, notably azhdarchoids. Here we describe a new genus and species of toothed pteranodontoid pterosaur, Ikrandraco avatar gen. et sp. nov., based on two laterally flattened specimens. Ikrandraco avatar is diagnosed by a suite of features, including a very low and elongate skull, strongly in...

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