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	Provedor de dados Naturalis (30) ArchiMer (5) Ameghiniana (4) OceanDocs (2) Anais da ABC (AABC) (2) Acta Botanica (1) Biota Neotropica (1) Mais... Autor Wesselingh, F.P. (12) Hoek Ostende, L.W. van den (5) Räsänen, M.E. (4) Montoya, P. (3) Blissett, D.J. (2) Donovan, S.K. (2) Doukas, C.S. (2) Guerrero, J. (2) Morales, J. (2) Pickerill, R.K. (2) Romero Pittmann, L. (2) Salo, J.A. (2) Varela, C. (2) Vonhof, H.B. (2) AVILLA,LEONARDO S. (1) Aartsen, J.J. van (1) Abella, J. (1) Alcalde, G.M. (1) Alcalá, L. (1) Anderson, L.C. (1) Mais... Palavra-chave Miocene (45) 38.22 (20) 42.73 (13) 42.84 (7) Amazonia (7) Pebas Formation (6) Mollusca (5) Systematics (5) Oligocene (4) Evolution (3) New species (3) Pliocene (3) Western Amazonia (3) Decapoda (2) Erosion (2) Gastropoda (2) Insectivores (2) Jamaica (2) Mammalia (2) Mediterranean (2) Mais... Tipo do documento Article / Letter to the editor (27) Info:eu-repo/semantics/article (7) Text (5) Book (monograph) (2) Journal Contribution (2) Info:eu-repo/semantics/other (1) Part of book or chapter of book (1) Mais... Ano 2017 (2) 2016 (1) 2015 (1) 2014 (1) 2011 (2) 2010 (4) 2009 (4) 2008 (4) 2007 (1) 2006 (11) 2005 (3) 2003 (5) 2002 (1) 2001 (1) 2000 (2) 1997 (1) 1996 (1) Mais... País Netherlands (30) France (5) Argentina (4) Brazil (4) Belgium (2) Idioma Inglês (12) Espanhol (2) Francês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 45 Primeira ... 1 2 3 ... Última Patagonichnus: a new trace fossil from the Miocene of Patagonia. A probable fodinichnion of gregarious polychaetes Ameghiniana Olivero,Eduardo B.; López Cabrera,María I.. Miocene tidal deposits from Las Grutas, Patagonia, Argentina, superbly preserve cylindrically laminated burrow systems including Asterosoma radiciforme von Otto and three compound ichnospecies of the newly proposed ichnogenus Patagonichnus ; P. calyciformis n. isp.; P. stratiformis n. isp.; and P . thalassiformis n. isp. Together with large, palmate burrows, probably produced by crustacean decapods, they are elite trace fossils. The Patagonichnus burrow systems consist of many distinctive concentrically laminated elementary components including: horizontal and vertical, conical and helicoidal bulbs and swellings; vertical shafts; straight and paired branches; and cone-in-cone structures. Hollow, branched, straight or helicoidal inner lined tubes connect... Tipo: Info:eu-repo/semantics/article Palavras-chave: Trace fossils; Patagonichnus; Asterosoma; Miocene; Patagonia; Ethology; Polychaetes. Ano: 2005 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0002-70142005000200002 Abundance and distribution of Lithophaga (Mytilidae) in extant and fossil oysters: taphonomic and paleobiological implications Ameghiniana Mauna,Cecilia; Casadío,Silvio; Parras,Ana; Pascual,Marcela. In this study we analyze the abundance and distribution patterns of Lithophaga patagonica in valves of Ostrea puelchana and compare them to those of Lithophaga sp. observed on the fossil species " Ostrea " patagonica and " Ostrea " alvarezii from the late Miocene Puerto Madryn Formation. No specimen of the fossil oysters showed borings of Lithophaga sp. on the interior surface of the valves. This suggests that they were produced while the oysters were still living and, at the same time, that the oyster beds were buried rapidly after death. In Ostrea puelchana the boring abundance was significantly higher for the left valve and, within it, the areas more heavily bored were the umbones and the platform. The same results were obtained for valves of " Ostrea "... Tipo: Info:eu-repo/semantics/article Palavras-chave: Lithophaga; Bioerosion; Oysters; Taphonomy; Miocene; Argentina. Ano: 2005 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0002-70142005000200010 A new Mammutidae (Proboscidea, Mammalia) from the Late Miocene of Gansu Province, China Anais da ABC (AABC) MOTHÉ,DIMILA; AVILLA,LEONARDO S.; ZHAO,DESI; XIE,GUANGPU; SUN,BOYANG. ABSTRACT The "Yanghecun specimen", a proboscidean specimen represented by a mandible from Miocene of China and previously described as Gomphotheriidae, is here reviewed and described as a new genus and species of Mammutidae: Sinomammut tobieni. This taxon is a longirostrine mastodon, lacking lower tusks, and bearing a wide last molar with oblique and non-inflated lophids, broad transverse interlophids, and yoke-like wear figures. Phylogenetic analysis of Mammutidae based on dental and mandibular features recovered S. tobieni as sister group of the mastodon Mammut. The longirostrine condition and the well-developed lower incisors seem to be primitive for Mammutidae, while the brevirostry is the derived condition, probably emerged during the middle Miocene... Tipo: Info:eu-repo/semantics/article Palavras-chave: Evolution; Longirostrine symphysis; Mammutidae; Miocene; Proboscidea. Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000100065 Marine influence in the Barreiras Formation, State of Alagoas, northeastern Brazil Anais da ABC (AABC) Rossetti,Dilce F.; Góes,Ana M.. Tidal processes were important for deposition of the Barreiras Formation located in northern Brazil, while correlatable deposits in northeastern Brazil have been traditionally related to continental environments. Facies analysis in southern Alagoas revealed that the Barreiras Formation consists of cross-stratified conglomerates and sandstones (facies Sx and Cgx), compound cross-stratified sandstones (facies Cx), and heterolithic beddings (facies H). A significant portion of these deposits occurs within channel morphologies displaying fining and thinning upward successions. An abundance of sedimentary features is comparable to those from the northern Brazilian counterpart. These include: tidal bundles; herringbone cross-stratification; heterolithic beddings... Tipo: Info:eu-repo/semantics/article Palavras-chave: Miocene; Marine transgression; Tidal currents; Sedimentary structures; Northeastern Brazil. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652009000400012 The rise and fall of the Refugial Hypothesis of Amazonian speciation: a paleoecological perspective Biota Neotropica Bush,Mark B.; Oliveira,Paulo E. de. The refugial hypothesis is treated as the definitive history of Amazonian forests in many texts. Surprisingly, this important theoretical framework has not been based on paleoecological data. Consequently, a model of Amazonian aridity during the northern hemispheric glaciation has been accepted uncritically. Ironically, the Refuge Hypothesis has not been tested by paleobotanical data. We present a revision of the concept of Neotropical Pleistocene Forest Refuges and test it in the light of paleocological studies derived from pollen analysis of Amazonian lake sediments deposited during the last 20,000 years. Our analysis is based primarily on paleoenvironmental data obtained from sites in Brazil and Ecuador. These data are contrasted with those that favor... Tipo: Info:eu-repo/semantics/other Palavras-chave: Amazonia; Refugia; Fossil pollen; Glaciations; Pleistocene; Holocene; Miocene; Phylogeny; Speciation diversity. Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032006000100002 Registros recuperados: 45 Primeira ... 1 2 3 ... Última

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