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Registros recuperados: 41
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A Miocene molluscan faunule from Caucagua (Miranda State, Venezuela), with the description of a new species of Tryonia (Mollusca, Gastropoda) Naturalis
Wesselingh, F.P.; Macsotay, O..
A molluscan faunule from the Miocene Cumaca Formation of the western margin of the Tuy Basin (Venezuela) is described. The fauna yields two species of freshwater snails and a single terrestrial snail species. Tryonia vivasi nov. spec. is described from the fauna, and its biogeographical significance is discussed.
Tipo: Article / Letter to the editor Palavras-chave: Miocene; Venezuela; Gastropoda; Tryonia; New species; Cumaca Formation; 42.73; 38.22.
Ano: 2006 URL: http://www.repository.naturalis.nl/record/235213
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A Miocene perspective on the evolution of the Amazonian biota Naturalis
Wesselingh, F.P.; Salo, J.A..
Between c. 23 and 8 Ma, western Amazonia was occupied by the vast Pebas long-lived lake/wetland system. The Pebas system had a variety of influences over the evolution of Miocene and modern Amazonian biota; it formed a barrier for the exchange of terrestrial biota, a pathway for the transition of marine biota into freshwater Amazonian environments, and formed the stage of remarkable radiations of endemic molluscs and ostracods. The lithological variation of the Pebas Formation has furthermore enhanced edaphic heterogeneity in western Amazonia, sustaining present-day high terrestrial diversity in the region.
Tipo: Article / Letter to the editor Palavras-chave: Miocene; Amazonia; Biogeography; Biodiversity; Mollusca; 42.73; 38.22.
Ano: 2006 URL: http://www.repository.naturalis.nl/record/209738
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A new short-rostrum odontocete (Mammalia: Cetacea) from the middle Miocene of the Eastern Netherlands Naturalis
Bianucci, G.; Landini, W..
An incomplete odontocete (Mammalia, Cetacea) skull from Middle Miocene Miste Bed (near Winterswijk in the eastern part of The Netherlands) is described as Vanbreenia trigonia, a new genus and species. The skull exhibits a short rostrum with only two maxillary teeth for each toothrow and with narrow and toothless apical portion exclusively formed by the premaxilla. Considering this last character, the specimen could belong to the Eurhinodelphinidae even if a certain attribution is not possible because of the incompleteness of the specimen. Vanbreenia n. gen. could represent a specialized adaptation to bottom suction feeding among the eurhinodelphinids.
Tipo: Article / Letter to the editor Palavras-chave: Cetacea; Odontocete; Systematics; Feeding; Miocene; The Netherlands.
Ano: 2002 URL: http://www.repository.naturalis.nl/record/505053
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A new species of Sphenotrochus (Scleractinia: Turbinoliidae) from the Late Miocene (Tortonian) of Chile Naturalis
Cairns, S.D..
A new species of azooxanthellate Scleractinia, Sphenotrochus denhartogi, is described from the Late Miocene (Tortonian, Navidad Formation) of Chile. Comparisons are made to three other closely related species which, based on their distinctive costal morphology, form a species complex: S. claibornensis, S. senni, S. denhartogi, and S. auritus. This is the first record of Sphenotrochus from the west coast of South America.
Tipo: Article / Letter to the editor Palavras-chave: Scleractinia; Turbinoliidae; Miocene; Tortonian; Navidad Formation; Sphenotrochus denhartogi spec. nov.; Chile; 42.79.
Ano: 2003 URL: http://www.repository.naturalis.nl/record/220295
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A redescription of the Indo-West Pacific Spirobranchus corrugatus Straughan, 1967 (Serpulidae, Polychaeta), and an alternative hypothesis on the nature of a group of Middle Miocene microfossils from Poland Naturalis
Hove, Harry A. ten; Nishi, Eijiroh.
Spirobranchus corrugatus, a little known species, is redescribed based on ample material from Australia, Indonesia, Japan and the Seychelles. The species is characterized by a seemingly porous tube, sunk into the substrate. Characteristically, the opercular plate shows a number of radial ridges on its distal surface, resembling Middle Miocene microfossils from Poland. The ventral rim of the opercular bulb of Sp. corrugatus bears numerous ocelli, with single lenses. A comparison with similar species is given.
Tipo: Article / Letter to the editor Palavras-chave: Polychaeta; Serpulidae; Indo-Pacific; Miocene; Poland.
Ano: 1996 URL: http://www.repository.naturalis.nl/record/505214
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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
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Attempts to predate on gadid fish otoliths demonstrated by naticid gastropod drill holes from the Neogene of Mill-Langenboom, The Netherlands Naturalis
Gaemers, P.A.M.; Langeveld, B.W..
Incomplete drill holes produced by naticid snails are occasionally found in late Cenozoic gadid otoliths from the North Sea Basin. Among the Neogene otoliths found at Mill-Langenboom naticid drill holes are relatively common. Their occurrence is linked to strata that formed under reduced rates of sedimentation and/or that reflect non-sedimentation and erosion. The Upper Miocene–Upper Pliocene deposits at Mill-Langenboom (province of Noord-Brabant, the Netherlands) constitute a condensed sequence comprising most North Sea Basin stages of this interval from the Gramian to the end of the Pliocene, as demonstrated by index taxa amongst gadid otoliths, with a considerable hiatus between Miocene and Pliocene strata. The lag deposit at the base of the Pliocene...
Tipo: Article / Letter to the editor Palavras-chave: Miocene; Pliocene; Noord-Brabant; Palaeoecology; Biostratigraphy; Chronostratigraphy; North Sea Basin.
Ano: 2015 URL: http://www.repository.naturalis.nl/record/607550
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Buried fluvial incisions as a record of Middle-Late Miocene eustasy fall on the Armorican Shelf (Bay of Biscay, France) ArchiMer
Paquet, Fabien; Menier, David; Estournes, Guilhem; Bourillet, Jean-francois; Leroy, Pascal; Guillocheau, Francois.
High-resolution seismic data have been acquired in June 2008 on the Armorican Shelf (AS), in the northern Bay of Biscay, in order to reassess its stratigraphic architecture in detail and to study the impact of eustasy, tectonic and sediment delivery on the margin sedimentary record. Several profiles show fluvial-type incisions of several tens of meters (up to 54 m) associated to a widespread erosion surface. Several hypotheses are proposed for the stratigraphic position of this surface and incisions. We suggest Middle to Late Miocene age. Considering the relatively quiescent tectonic activity of the margin, we infer that the relative sea-level fall responsible of aerial incision on the Miocene shelf is eustasy-related. We propose the attested...
Tipo: Text Palavras-chave: Armorican Shelf; Incised valleys; Miocene; Eustasy; Passive margin.
Ano: 2010 URL: http://archimer.ifremer.fr/doc/00001/11200/8048.pdf
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Crustaceans of the upper Miocene August Town Formation of southeastern Jamaica Naturalis
Collins, J.S.H.; Donovan, S.K.; Stemann, T.A.; Blissett, D.J..
Crustaceans remain poorly known from the Miocene of Jamaica. Herein, we report three species from the upper Miocene August Town Formation of Fowl House Spring, parish of St. Thomas, southeast Jamaica; poorly preserved propodi of a mud shrimp, “Callianassa” sp.; the anterior part of the carapace of Mithraculus sp. aff. Mithraculus coryphe (Herbst); and the cirripede Tetraclita sp. cf. T. stalactifera (Lamarck). Mithraculus sp. aff. M. coryphe at Fowl House Spring considerably extends the stratigraphic occurrence of the genus in the Antillean region down into the Miocene. Hitherto, fossil T. stalactifera in the Caribbean was known from the Plio-Pleistocene of Curaçao and the Pleistocene of Venezuela.
Tipo: Article / Letter to the editor Palavras-chave: Jamaica; Miocene; Barnacles; Cirripedia; Crabs; Decapoda; 38.22.
Ano: 2010 URL: http://www.repository.naturalis.nl/record/361979
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Crustáceos (Decapoda: Brachyura) fósiles de Cuba. OceanDocs
Varela, C.; Rojas-Consuegra, R..
Three families, two genera and two species are recorded for the first time for the Cuban Cretaceous to Pleistocene geologic age. The genera Persephona Leach, 1817 (Leucosiidae), Mithrax Desmarest, 1823 (Majidae) and Panopeus Milne Edwards, 1834 (Panopeidae) are well known in the Recent of the Caribbean region. Fossils of these taxa are found in formations from lower Miocene to upper Pleistocene in age in the Caribbean. Portunus oblongus Rathbun, 1920, an extinct species, is the first species of Portunus Weber, 1795 recorded from Cuban Oligocene–Miocene. Lophoranina precocious Feldmann, Vega, Tucker, García-Barrera y Avendaño, 1996 (Raninidae), other extinct species, is also recorded for the Cretaceous (Campanian- Maastrichtian). This is the most ancient...
Tipo: Journal Contribution Palavras-chave: Cretaceous; Oligocene; Miocene; Pleistocene.
Ano: 2009 URL: http://hdl.handle.net/1834/3408
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Crustáceos fósiles (Decapoda: Brachyura) de la Formación Colón, Matanzas, Cuba OceanDocs
Rojas Consuegra, R.; Varela, C..
Three families, four genera and four species of fossil crustacean (Decapoda: Brachyura) were studied. The following taxa are recorded for the first time for the Cuban Oligocene-Miocene belonging to Colon formation, Matanzas, Cuba: Raninoides sp. (Raninidae), Necronectes collinsi Schweitzer et al. (Portunidae), Iliacantha liodactylus Rathbun (Leucosiidae) and Hepatus sp. (Aethridae).
Tipo: Journal Contribution Palavras-chave: 1283; Crustaceans; New records; Oligocene; Miocene; New taxa; Cuba; Decapoda; Brachyura; Http://aims.fao.org/aos/agrovoc/c_1997; Http://aims.fao.org/aos/agrovoc/c_2141; Http://aims.fao.org/aos/agrovoc/c_47038.
Ano: 2011 URL: http://hdl.handle.net/1834/4062
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Distribution and evolutionary history of the Early Miocene erinaceid Galerix symeonidisi Doukas, 1986 Naturalis
Hoek Ostende, L.W. van den; Doukas, C.S..
The distribution of the Early Miocene galericine Galerix symeonidisi, with records from Greece, Germany, Spain and Austria is discussed. The identification of G. cf. symeonidisi from the Anatolian Çankiri basin is changed into G. cf. uenayae on the basis of additional material. Galerix symeonidisi enters Europe at the MN 3/ MN 4 transition. Differences in the pattern of replacement of the preceding Galerix species in Germany and Spain suggest that ecological factors played a role in that replacement. Galerix symeonidisi is succeeded by G. exilis in Western and Central Europe. A G. symeonidisi - G. exilis lineage, as has been proposed in literature, is rejected. The record from the Daroca-Calamocha area (Spain) is instead interpreted as a case of gradual...
Tipo: Article / Letter to the editor Palavras-chave: Evolutionary history; Galerix; Miocene; 38.22; 42.84.
Ano: 2003 URL: http://www.repository.naturalis.nl/record/327789
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El sistema de yacimientos de mamíferos miocenos del Cerro de los Batallones, Cuenca de Madrid: estado actual y perspectivas Naturalis
Morales, J.; Pozo, M.; Silva, P.G.; Domingo, M.S.; López-Antoñanzas, R.; Álvarez Sierra, A.; Antón, M.; Martín Escorza, C.; Quiralte, V.; Salesa, M.J.; Sánchez, I.M.; Azanza, B.; Calvo, J.P.; Carrasco, P.; García-Paredes, I.; Knoll, F.; Hernández Fernández, M.; Hoek Ostende, L.W. van den; Merino, L.; Meulen, A.J. van der; Montoya, P.; Peigné, S.; Peláez-Campomanes, P.; Sánchez-Marco, A.; Turner, A.; Abella, J.; Alcalde, G.M.; Andrés, M.; DeMiguel, D.; Cantalapiedra, J.L.; Fraile, S.; García Yelo, B.A.; Gómez Cano, A.R.; López Guerrero, P.; Oliver Pérez, A.; Siliceo, G..
The Cerro de los Batallones (Los Batallones Butte) is located in the central-northern area of the Madrid Basin, central Spain. Nine vertebrates localities containing a large variety of mammals of Upper Vallesian Age (Late Miocene) have been found associated with the sediments forming the butte. From bottom to top, these sediments consist of magnesian lutite beds (Unit I), paleosols formed of sepiolite and opal (Unit II), and siliclastic, marlstone and carbonate beds (Unit III). The set of ERT profiles developed in Los Batallones Butte have demonstrate that electrical imaging techniques are an estimable tool for the characterization and prospecting of fossil sites developed in fine-grained siliciclastic sequences. These localities contain an exceptionally...
Tipo: Part of book or chapter of book Palavras-chave: Mammalia; Miocene; Cerro de los Batallones; 38.22; 42.84.
Ano: 2008 URL: http://www.repository.naturalis.nl/record/327989
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Evolution of Late Oligocene - Early Miocene attached and isolated carbonate platforms in a volcanic ridge context (Maldives type), Yadana field, offshore Myanmar ArchiMer
Paumard, Victorien; Zuckmeyer, Eric; Boichard, Robert; Jorry, Stephan; Bourget, Julien; Borgomano, Jean; Maurin, Thomas; Ferry, Jean-noel.
This study investigates the stratigraphic evolution of the Late Oligocene - Early Miocene carbonate platforms of the Yadana area (offshore Myanmar). Well data, regional 2D and local 3D seismic surveys allow the identification of three shallow-water carbonate platforms (Yadana, 3DF and 3DE) showing various morphologic and stratigraphic patterns influenced by the presence of a paleohigh. The identification of seven seismic sequences in the Yadana area constrains the stratigraphic evolution in three stages: (1) development of aggrading attached and isolated platforms during the Chattian; (2) a period of platform emersion during the Oligocene - Miocene transition; (3) drowning of the smaller buildup (3DE) associated with km-scale backstepping on the large...
Tipo: Text Palavras-chave: Yadana; Carbonate platforms; Oligocene; Miocene; Seismic stratigraphy; Geomorphology; Paleogeography; Control parameters; Burman margin.
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00364/47483/47502.pdf
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Evolution oligo miocène des marges du micro océan Liguro-Provençal ArchiMer
Bache, François.
The Gulf of Lion margin has been created by an Oligo-Aquitanian rifting followed by oceanic accretion in the Provencal basin during the Burdigalian. Two main periods have been detailed in this thesis: • The Messinian event that needs to be differentiated from earlier strata deposition. The event also represents a clear marker (between 7 and 5,3 Ma) within the history of the basin. • The initial period of margin formation, from the beginning of continental extension (35-30 Ma) to oceanisation (around 20 Ma) The database for this study has been built using all available data (seismic and wells from industry) on the shelf, the slope and the deep basin of the Gulf of Lion. The gathering of this huge database occurred in the framework of the French GDRMarges...
Tipo: Text Palavras-chave: Thermal anomaly; Passive Margins; Subsidence; Rifting; Detritism; Erosion; Salinity Crisis; Miocene; Messinian; Mediterranean; Gulf of Lion; Anomalie thermique; Marges passives; Subsidence; Rifting; Détritisme; Érosion; Crise de salinité; Miocène; Messinien; Méditerranée; Golfe du Lion.
Ano: 2008 URL: http://archimer.ifremer.fr/doc/2008/these-4768.pdf
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Evolutionary ecology of the Pachydontinae (Bivalvia, Corbulidae) in the Pebas lake/wetland system (Miocene, western Amazonia) Naturalis
Wesselingh, F.P..
Miocene deposits in western Amazonia and adjacent areas of South America harbour a diverse suite of endemic corbulid bivalves, commonly referred to as Pachydontinae, that show a wide variety of morphologies. Especially in the Miocene Pebas Formation (Peru, Colombia and Brazil), this group diversified spectacularly. Since these corbulids (a cosmopolitan marine and perimarine bivalve family) occur with freshwater taxa and yield isotope signals strongly indicative of freshwater settings, the success of this group in inland basins of Miocene northwestern South America is surprising. In this paper it is argued that a combination of adaptations to fluid bottom substrates, common dysoxia and high predation intensities explains their abundance, their morphological...
Tipo: Article / Letter to the editor Palavras-chave: Corbulidae; Pachydontinae; Miocene; Amazonia; Evolution; Adaptation; 42.73; 38.22.
Ano: 2006 URL: http://www.repository.naturalis.nl/record/209734
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Ichnology of the Lower Miocene Chenque Formation, Patagonia, Argentina: animal - substrate interactions and the Modern Evolutionary Fauna Ameghiniana
Carmona,Noelia B.; Buatois,Luis A.; Mángano,María Gabriela; Bromley,Richard G..
The lower Miocene Chenque Formation of Patagonia contains superbly preserved and diverse ichnofaunas, including the ichnogenera Asterosoma, Balanoglossites, Chondrites, Gastrochaenolites, Gyrolithes, Helicodromites, Macaronichnus, Nereites, Ophiomorpha, Palaeophycus, Phycosiphon, Planolites, Protovirgularia, Rhizocorallium, Rosselia, Schaubcylindrichnus, Scolicia, Siphonichnus, Skolithos, Spongeliomorpha, Taenidium, Teichichnus, and Thalassinoides. Wave-influenced open-marine deposits are characterized by intense bioturbation, complex tiering structures and a very high diversity. Restricted, brackish-water, tide-dominated deposits display lesser degrees of bioturbation, less complex tiering structures and lower ichnodiversity. Both marginal- and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Trace fossils; Miocene; Chenque Formation; Patagonia; Shallow marine.
Ano: 2008 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0002-70142008000100007
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Indarctos (Ursidae, Mammalia) from the Spanish Turolian (Upper Miocene) Naturalis
Montoya, P.; Alcalá, L.; Morales, J..
Abundant fossils of the bear Indarctos atticus (Weithofer, 1888) from the Lower Turolian (MN11) site of Crevillente 2 (Alicante, Spain) and some new material from the Middle Turolian (MN12) of Concud and Valdecebro 5 (Teruel, Spain) are described. On the other hand some dental remains from Crevillente 2 are identified as Indarctos sp. cf. I. vireti Villalta & Crusafont, 1943 on the basis of their small size. The status of different Indarctos species are discussed.
Tipo: Article / Letter to the editor Palavras-chave: Mammalia; Ursidae; Miocene; Spain; 42.84; 38.22.
Ano: 2001 URL: http://www.repository.naturalis.nl/record/219159
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Insectivores (Erinaceomorpha, Soricomorpha; Mammalia) from Karydia and Komotini (Thrace, Greece; MN 4/5) Naturalis
Doukas, C.S.; Hoek Ostende, L.W. van den.
The insectivores from the Thrace locality of Karydia (MN 4) are described, as well as an erinaceid molar from thenearby locality of Komotini (MN 5). The Karydia assemblagecontains the same genera of the Greek MN 4 localityAliveri, with the addition of a shrew and of Plesiosorex. An M2 of the latter is the southernmost occurrence of this genus, and the first record from the Mediterranean area. At the species level there are differences between Karydia and Aliveri. As Galerix kostakii n.sp. from Karydia is interpreted as a descendant of G. symeonidisi from Aliveri, a younger age for the Thrace locality, as was already assumed on the basis of the rodents, is confirmed. A model is proposed in which the symeondisi-kostakii lineage gives rise to Parasorex, of...
Tipo: Article / Letter to the editor Palavras-chave: Insectivores; New species; Evolution; Miocene; Greece; 38.22; 42.84.
Ano: 2006 URL: http://www.repository.naturalis.nl/record/327718
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Insectivores (Lipotyphla, Mammalia) from the Ramblian of the Daroca-Calamocha area Naturalis
Hoek Ostende, L.W. van den.
The insectivore assemblages from the Ramblian stratotype near Calamocha (Spain) are described, as well as those from San Roque 4A and 4B, two Ramblian localities near the Aragonian stratotype. Two new species are described, the erinaceid Galerix remmerti, and the shrew Clapasorex alvarezae. Both the percentages and the diversity of insectivores are higher in the Lower Ramblian, suggesting more humid conditions in zone Z than in zone A. This is in contradiction with the palaeoenvironmental reconstructions based on rodents. Se describen las asociaciones de insectívoros del estratotipo del Rambliense cerca de Calamocha (Teruel, España), junto de las de San Roque 4A y 4B, dos yacimientos Ramblienses del área-tipo del Aragoniense. Se describar dos especies...
Tipo: Article / Letter to the editor Palavras-chave: Ramblian; Miocene; Insectivora; 38.22; 42.84.
Ano: 2003 URL: http://www.repository.naturalis.nl/record/327729
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