Consulta: creatorFacets:"Wesselingh, F.P."
Registros recuperados: 19
Data/hora: 17/06/2024 03:51:50

Landscape evolution and depositional processes in the Miocene Amazonian Pebas lake/wetland system: evidence from exploratory boreholes in northeastern Peru.
Provedor de dados: 16
Autores: Wesselingh, F.P.; Guerrero, J.; Räsänen, M.E.; Romero Pittmann, L.; Vonhof, H.B.
This study of the type and scales of depositional processes and landscape development in western Amazonia during the Miocene is based on the description and interpretation of three boreholes from the Marañon basin (Peru). The Miocene Pebas Formation, and the overlying Marañon Formation and underlying Chambira Formation are lithologically characterised. An age calculation model indicates an Oligocene age for the Chambira Formation, and an Early – early late Miocene age for the Pebas Formation. The base of the Chambira Formation is placed at a sequence boundary and corresponds to the beginning of a regression. The succession was deposited in floodplains included in a RST and a LST under a seasonal climate with a pronounced dry season. The base of the Pebas...
Tipo: Article / Letter to the editor
Palavras-chave: Miocene; Marañon basin; Peru; Pebas Formation; Chambira Formation; Stratigraphy; 38.16.
Ano: 2006
URL: http://www.repository.naturalis.nl/record/209731

The stratigraphy and regional structure of Miocene deposits in western Amazonia (Peru, Colombia and Brazil), with implications for late Neogene landscape evolution
Provedor de dados: 16
Autores: Wesselingh, F.P.; Hoorn, M.C.; Guerrero, J.; Räsänen, M.E.; Romero Pittmann, L.; Salo, J.A.
A biozonation based on molluscs is proposed for Miocene deposits of western Amazonia (Peru, Colombia and Brazil), commonly referred to as the Pebas Formation. The new zonation refines existing pollen zonations and provides a key for the quick assessment of the stratigraphic position of Neogene deposits in the field. The regional distribution of twelve mollusc zones reveals a structuring of geological units around the broad Iquitos-Araracuara anteclise. The structure of the subsurface appears to have been a major factor in the determination of present-day second and lower order river courses in the study area. Based on this work a biostratigraphic framework for Miocene deposits of western Amazonia, including fossiliferous deposits from adjacent basins...
Tipo: Article / Letter to the editor
Palavras-chave: Stratigraphy; Mollusca; Miocene; Western Amazonia; Pebas Formation; 42.73; 38.22.
Ano: 2006
URL: http://www.repository.naturalis.nl/record/209729

On the stratigraphic position of the Delden Member (Breda Formation, Overijssel, the Netherlands) with implications for the taxonomy of Pygocardia (Mollusca, Bivalvia)
Provedor de dados: 16
Autores: Bosch, J.; Wesselingh, F.P.
Re-identification of parts of the mollusc fauna of the Delden Member, especially Pygocardia and Panopea species, from the vicinity of Delden (Overijssel prov., the Netherlands) and comparison with other Neogene faunas from the southern North Sea Basin imply a late Early to early Late Pliocene age for the Delden fauna, that usually is attributed to the Miocene. Shell measurements performed for this study revealed that the species definitions for Pliocene North Sea Basin Pygocardia are inadequate.
Tipo: Article / Letter to the editor
Palavras-chave: Delden Member; The Netherlands; Mollusca; Panopea; Pygocardia; Biochronology; 42.73.
Ano: 2006
URL: http://www.repository.naturalis.nl/record/235202

On relict hydrobiid species in Brazilian Amazonia (Gastropoda, Prosobranchia, Hydrobiidae)
Provedor de dados: 16
Autores: Wesselingh, F.P.
Two extant hydrobiid species from the lower Tapajos river of Brazil are redescribed. Potamopyrgus amazonicus Haas, 1949, is assigned to the genus Dyris Conrad, 1871. At least eleven species from Miocene deposits of Western Amazonia are assigned to Dyris, a genus that was previously assumed to be extinct. The apertural features of Sioliella effusa Haas, 1949, are considered indicative of a close relationship to Miocene Amazonian taxa formaly assigned to Eubora Kadolsky, 1980. Sioliella ovata spec. nov., a Miocene species resembling S. effusa is described. The two Tapajos species can be regarded as relicts of a speciose, endemic, Miocene Western Amazonian molluscan fauna.
Tipo: Article / Letter to the editor
Palavras-chave: South America; Amazonia; Miocene; Recent; Hydrobiidae; Dyris; Sioliella; New species; 42.73; 38.22.
Ano: 2000
URL: http://www.repository.naturalis.nl/record/235203

A Miocene molluscan faunule from Caucagua (Miranda State, Venezuela), with the description of a new species of Tryonia (Mollusca, Gastropoda)
Provedor de dados: 16
Autores: 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

New Odostomia species (Gastropoda, Heterobranchia, Pyramidellidae) from the Miocene Pebas Formation of Western Amazonia (Peru, Colombia)
Provedor de dados: 16
Autores: Aartsen, J.J. van; Wesselingh, F.P.
Odostomia nuttalli spec. nov. and O. coluhensis spec. nov. are described from the Miocene Pebas Formation of Peruvian and Columbian Amazonia. A third pyramidellid snail is also diagnosed. These species are indicators for marine influence in the late Middle to early Late Miocence of Western Amazonia. Some ecological implications are discussed.
Tipo: Article / Letter to the editor
Palavras-chave: Mollusca; Gastropoda; Odostomia; Systematics; Miocene; Amazonia; Pebas Formation; 38.22; 42.73.
Ano: 2000
URL: http://www.repository.naturalis.nl/record/235155

Flying high: on the airborne dispersal of aquatic organisms as illustrated by the distribution histories of the gastropod genera Tryonia and Planorbarius
Provedor de dados: 16
Autores: Wesselingh, F.P.; Cadée, G.C.; Renema, W.
The actual and fossil distribution patterns of the aquatic gastropod genera Tryonia and Planorbarius indicate that avian dispersal was an important dispersal mechanism in the geological past. Combining the distribution histories of these genera with ecological data on modern relatives provides insights into the process of dispersal of aquatic taxa in general. Avian dispersal of aquatic taxa is facilitated by a variety of factors, including mass occurrence in resting/foraging places of migrating birds, ways to attach to the birds and to overcome desiccation during flight, as well as easy reproduction from a single specimen when introduced into a new habitat. The uncertain taxonomical status of aquatic organisms, as well as biased preservation and sampling,...
Tipo: Article / Letter to the editor
Palavras-chave: Avian dispersal; Aquatic taxa; Biogeography; Distribution; Gastropoda; Mollusca; 42.73.
Ano: 1999
URL: http://www.repository.naturalis.nl/record/235212

Molluscan radiations and landscape evolution in Miocene Amazonia
Provedor de dados: 16
Autores: Wesselingh, F.P.
This PhD study aims to exploit the rich archive provided by the Miocene mollusc fauna of the Pebas Formation and other inland Miocene Amazonian formations to reconstruct landscape evolution and biotic development in lowland Amazonia during the Neogene. Over 160 samples from more than 70 Pebas Formation outcrops mostly collected by the author were processed for this study. Additional samples were collected in Andean areas of Colombia and Venezuela and further material from other northwestern South American basins was studied in museums. Pebas Formation samples and well log data made available by Occidental Peru from three wells in the Marañon Basin in Peru were also investigated.     During this study four genera and 74 species from the Pebas Formation have...
Tipo: Book (monograph)
Palavras-chave: Amazonian biodiversity; Miocene; Mollusc fauna; Pebas Formation; 42.73.
Ano: 2008
URL: http://www.repository.naturalis.nl/record/307030

On the identity of broad-shelled mussels (Mollusca, Bivalvia, Mytilus) from the Dutch delta region
Provedor de dados: 16
Autores: Groenenberg, D.S.J.; Wesselingh, F.P.; Rajagopal, S.; Jansen, J.M.; Bos, M.M.; Velde, G. van der; Gittenberger, E.; Hoeksema, B.W.; Raad, H.; Hummel, H.
Late Quaternary (Eemian) deposits of the Netherlands contain shells that resemble those of living Mytilus galloprovincialis. Similar broad-shelled mytilids also occur in estuaries of the southwestern Netherlands together with slender individuals typical of M. edulis. We sampled living mussels along a depth gradient in the Oosterschelde to a) investigate whether a relation exists between shell shape and depth, b) test if the broadshelled specimens might represent M. galloprovincialis (or a hybrid with M. edulis) and c) assess by inference if the Quaternary specimens might be attributed to M. galloprovincialis as well. In order to do so, we compared genetic (length polymorphism of Me 15/16, COIII sequences and AFLPs) and shellmorphological characteristics...
Tipo: Article / Letter to the editor
Palavras-chave: AFLP; COIII; Me 15/16; Mytilus; Shell morphology; The Netherlands; 42.73.
Ano: 2011
URL: http://www.repository.naturalis.nl/record/376595

Cenozoic Molluscan types from Java (Indonesia) in the Martin Collection (Division of Cenozoic Mollusca), National Museum of Natural History, Leiden
Provedor de dados: 16
Autores: Hoek Ostende, L.W. van den; Leloux, J.; Wesselingh, F.P.; Winkler Prins, C.F.
An inventory of type material in the ‘Martin Collection’ at the Division of Cenozoic Mollusca of the National Museum of Natural History, Leiden, The Netherlands has been made. In total 1842 lots containing over 5700 type specimens of 912 species were encountered. The status of the types is outlined.
Tipo: Article / Letter to the editor
Palavras-chave: Mollusca; Cenozoic; Types; Indonesia; Java; Martin Collection; 38.22; 42.73.
Ano: 2002
URL: http://www.repository.naturalis.nl/record/217420

The nature of aquatic landscapes in the Miocene of western Amazonia: an integrated palaeontological and geochemical approach
Provedor de dados: 16
Autores: Wesselingh, F.P.; Kaandorp, R.J.G.; Vonhof, H.B.; Räsänen, M.E.; Renema, W.; Gingras, M.
The Miocene Pebas Formation from the section Santa Rosa de Pichana (Loreto, Peru) was investigated using a combination of analyses of sedimentary facies, molluscan communities and taphonomy, and stable isotopes of both entire shells and growth bands in bivalves. Three sequences, comprising a succession of transgressive, maximum flooding and regressive/prograding intervals, are documented. Molluscs are most common in the transgressive/highstand intervals and are almost absent in regressive/prograding intervals. The fauna is dominated by endemic Pebasian species, such as Pachydon and Dyris spp. The nature of the deposits as well as the availability of oxygen varied in a predictable way within each of the sequences and determined the nature of the...
Tipo: Article / Letter to the editor
Palavras-chave: Miocene; Amazonia; Palaeoecology; Sedimentology; Stable isotopes; 38.22; 42.73.
Ano: 2006
URL: http://www.repository.naturalis.nl/record/209732

Types of Cenozoic Mollusca from Java in the Martin Collection of Naturalis
Provedor de dados: 16
Autores: Leloux, J.; Wesselingh, F.P.
An updated type catalogue of the Martin Collection (fossil Mollusca, predominantly from the Cenozoic of Java, Indonesia) is presented. Type specimen data, updated locality data, and illustrations are given.
Tipo: Article / Letter to the editor
Palavras-chave: Type specimens; Bivalvia; Gastropoda; Scaphopoda; Indonesia; Martin; 38.22.
Ano: 2009
URL: http://www.repository.naturalis.nl/record/313781

Mytilus antiquorum J. Sowerby, 1821 and other Pliocene mussels (Mollusca, Bivalvia) from the Southern North Sea Basin
Provedor de dados: 16
Autores: Vervoenen, M.; Wesselingh, F.P.; Nieulande, F.A.D. van.
Mytilus antiquorum J. Sowerby, 1821, is recorded from the Coralline Crag Formation of East Anglia (UK) and the Lillo Formation (Oorderen, Kruisschans and Merksem members) of the Antwerp area (Belgium). The species is diagnosed on the basis of newly collected material and differentiated from modern European mussel species. The presence of M. antiquorum in the southern North Sea Basin is restricted to the Middle (Piacenzian) and early Late Pliocene (Gelasian). A possible occurrence of the species in the latest Pliocene of northern Greenland is discussed. A second Middle- Late Pliocene North Sea Basin species, tentatively referred to as M. edulis forma giganteus Wood, 1874, is diagnosed and discussed. The systematic status of this species remains unsolved. In...
Tipo: Article / Letter to the editor
Palavras-chave: Pliocene; North Sea basin; Mollusca; Bivalvia; Mytilidae; 42.73; 38.22.
Ano: 2000
URL: http://www.repository.naturalis.nl/record/235200

Miocene long-lived lake Pebas as a stage of mollusc radiations, with implications for landscape evolution in western Amazonia
Provedor de dados: 16
Autores: Wesselingh, F.P.
The Miocene Pebas system was a huge (&gt; 1 million km2) system of long-lived lakes and wetlands that occupied most of western Amazonia between c. 23 and 8 Ma. Remarkable endemic radiations of molluscs and ostracods occurred in the Pebas system. The continuity of many of the endemic lineages between c. 17 and 9 Ma shows that the system was never fully replaced by fluvial or marine settings. Many of the endemic invertebrate groups developed an unusual range of morphologies that reflect adaptation to specific ecological stresses provided by the Pebas system, such as chemical stress, common dysoxia and high predation pressure. Mollusc diversity increased especially during the Middle Miocene. The Pebas system provided pathways for mobile marine organisms to...
Tipo: Article / Letter to the editor
Palavras-chave: Miocene; Amazonia; Molluscs; Landscape evolution; Pebas Formation; 42.73; 38.22.
Ano: 2006
URL: http://www.repository.naturalis.nl/record/209724

Molluscs from the Miocene Pebas Formation of Peruvian and Colombian Amazonia
Provedor de dados: 16
Autores: Wesselingh, F.P.; Anderson, L.C.; Kadolsky, D.
The mollusc fauna of the Miocene Pebas Formation of Peruvian and Colombian Amazonia contains at least 158 mollusc species, 73 of which are introduced as new; 13 are described in open nomenclature. Four genera are introduced (the cochliopid genera Feliconcha and Glabertryonia, and the corbulid genera Pachyrotunda and Concentricavalva) and a nomen novum is introduced for one genus (Longosoma). A neotype is designated for Liosoma glabra Conrad, 1874a. The Pebas fauna is taxonomically dominated by two families, viz. the Cochliopidae (86 species; 54%) and Corbulidae (23 species; 15%). The fauna can be characterised as aquatic (155 species; 98%), endemic (114 species; 72%) and extinct (only four species are extant). Many of the families represented by a few...
Tipo: Article / Letter to the editor
Palavras-chave: Mollusca; Systematics; Pebas Formation; Miocene; Western Amazonia; 42.73; 38.22.
Ano: 2006
URL: http://www.repository.naturalis.nl/record/209728

A Miocene perspective on the evolution of the Amazonian biota
Provedor de dados: 16
Autores: 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

Miocene freshwater Mollusca from western Brazilian Amazonia
Provedor de dados: 16
Autores: Wesselingh, F.P.; Ranzi, A.; Räsänen, M.E.
Thirteen species of fossil molluscs are reported from the Solimões Formation of western Brazilian Amazonia. Based on mammalian chronology of the Solimões Formation and radiometric ages reported from coeval deposits in adjacent Peru, the age of the fauna is established as Late Miocene. The fauna includes five prosobranch gastropod species, seven pearly freshwater mussel species and one sphaeriid bivalve species. The supposed presence of Pachydon (Corbulidae: Bivalvia) in these deposits is rejected; Pachydon acreanum, whose status has long been uncertain, is transferred to the unionoid genus Callonaia. The Solimões mollusc fauna is entirely composed of obligate freshwater taxa, resembling species-poor modern Amazonian fluvial faunas. The presence of the...
Tipo: Article / Letter to the editor
Palavras-chave: Mollusca; Western Amazonia; Miocene; Solimões Formation.; 38.22; 42.73.
Ano: 2006
URL: http://www.repository.naturalis.nl/record/209736

Amazonia through time: Andean uplift, climate change, landscape evolution and biodiversity
Provedor de dados: 16
Autores: Hoorn, C.; Wesselingh, F.P.; Steege, H. ter; Bermudez, M.A.; Mora, A.; Sevink, J.; Sanmartín, I.; Sanchez-Meseguer, A.; Anderson, C.L.; Figueiredo, J.P.; Jaramillo, C.; Riff, D.; Negri, F.R.; Hooghiemstra, H.; Lundberg, J.; Stadler, T.; Särkinen, T.; Antonelli, A.
The Amazonian rainforest is arguably the most species-rich terrestrial ecosystem in the world, yet the timing of the origin and  volutionary causes of this diversity are a matter of debate. We review the geologic and phylogenetic evidence from Amazonia and compare it with uplift records from the Andes. This uplift and its effect on regional climate fundamentally changed the Amazonian landscape by reconfiguring drainage patterns and creating a vast influx of sediments into the basin. On this “Andean” substrate, a region-wide edaphic mosaic developed that became extremely rich in species, particularly in Western Amazonia. We show that Andean uplift was crucial for the evolution of Amazonian landscapes and ecosystems, and that current biodiversity patterns...
Tipo: Article / Letter to the editor
Palavras-chave: Amazonia; Evolution; Biodiversity; 42.05; 42.21; 38.23.
Ano: 2010
URL: http://www.repository.naturalis.nl/record/365034

Evolutionary ecology of the Pachydontinae (Bivalvia, Corbulidae) in the Pebas lake/wetland system (Miocene, western Amazonia)
Provedor de dados: 16
Autores: 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