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| Registros recuperados: 31 | |
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| Donovan, S.K.. |
| A distinctive chert erratic pebble found on the beach at Overstrand, north Norfolk, eastern England, is a Derbyshire screwstone. Such cherts are typical of the Mississippian (Lower Carboniferous) limestones of the southern Pennines (White Peak), over 200 km to the northwest. It was most probably transported by fluvial or glacial action during the Pleistocene and was recently disinterred by coastal erosion. The most diagnostic feature of screwstone cherts are the included mouldic crinoid ossicles, particularly columnals. Columnals of the monobathrid camerate crinoid Megistocrinus? globosus? (Phillips) are described from this screwstone; these have a circular outline, central pentagonal lumen and a raised perilumen. The uncertainty of the identification is... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Beachcombing; Provenance; Neogene; Carboniferous; Megistocrinus; 38.10. |
| Ano: 2010 |
URL: http://www.repository.naturalis.nl/record/361971 |
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| Caccavari,Marta A.; Guler,M. Verónica. |
| Fossil mimosoid polyads have been recently recovered from Neogene deposits in the Colorado Basin, Argentina, and the new species Acaciapollenites acaciae sp. nov. is described, which is closely similar to polyads of species included in Acacia Miller subgenus Acacia Vassal. It is characterized by colporate apertures on the distal face of the pollen grains, a typical polyad of the subgenus Acacia. The new polyad species is very similar to those of the extant Acacia curvifructa Burkart. Comparing the habitat of subgenus Acacia extant species, the Acaciapollenites acaciae occurrence suggests drier and warmer paleoclimatic conditions than today for the Late Miocene-Early Pliocene in the Colorado Basin. Paleogeographic data of Acacia pollen diversity are... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Acacia polyads; Neogene; Colorado Basin; Argentina. |
| Ano: 2006 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0002-70142006000300006 |
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| SILVA,WAGNER G.; ZERFASS,GEISE S.A.; SOUZA,PAULO A.; HELENES,JAVIER. |
| This paper presents the integration of micropaleontological (palynology and foraminifera) and isotopic (87Sr/86Sr) analysis of a selected interval from the well 2-TG-96-RS, drilled on the onshore portion of the Pelotas Basin, Rio Grande do Sul, Brazil. A total of eight samples of the section between 140.20 and 73.50 m in depth was selected for palynological analysis, revealing diversified and abundant palynomorph associations. Species of spores, pollen grains and dinoflagellate cysts are the most common palynomorphs found. Planktic and benthic calcareous foraminifera were recovered from the lowest two levels of the section (140.20 and 134.30 m). Based on the stratigraphic range of the species of dinoflagellate cysts and sporomorphs, a span age from Late... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Micropaleontology; Biostratigraphy; Neogene; Pelotas Basin. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000401565 |
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| Weers, D.J. van. |
| The low-crowned Hystrix species known of the Neogene from Europe and Asia and some new finds from Shihuiba near Lufeng, South China, are compared on the basis of numerical data. The taxonomical allocation of the seven species recognised thus far is maintained. The occurrences of two coeval Eurasian late Turolian species is discussed. The material from Lufeng is described and allocated to Hystrix primigenia (Wagner, 1848), implicating an area of distribution of this species from S.E. Europe to S.E. Asia in the Turolian. In the northern Chinese Hystricidae the increase of the cheek tooth height is more advanced than in the the West Asiatic and European representatives. The difference in ecological environment of Hystrix gansuensis Wang & Qiu, 2002 (North... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Hystrix; Neogene; Europe; Asia; Shihuiba; Lufeng; Gansu; China. |
| Ano: 2004 |
URL: http://www.repository.naturalis.nl/record/505143 |
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| Collins, J.S.H.; Portell, R.W.; Donovan, S.K.. |
| The Neogene decapod crustaceans are reviewed from Aruba, Bonaire and Curaçao, Anguilla, Barbados, Carriacou, Costa Rica, Cuba, Florida, Hispaniola (Haiti and Dominican Republic), Jamaica, Mexico, Panama, Puerto Rico, St. Kitts, Tintamare Island, Trinidad and Venezuela. The most widely distributed taxa, both stratigraphically and geographically, are callianassids and Calappa (both with easily identifiable dactyli), and portunids. The latter include eleven genera in the study area; of these, Callinectes, Euphylax and Portunus are known from the Miocene, Pliocene and Pleistocene of the Caribbean. The two occurrences of scleractinian-inhabiting crab faunas, the Lower Miocene Montpelier Formation of Jamaica and the Pleistocene Coral Rock of Barbados, show... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Neogene; Caribbean; Crustacea; Decapoda; Crabs; Systematics; Biogeography; 42.74. |
| Ano: 2009 |
URL: http://www.repository.naturalis.nl/record/301552 |
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| CARRILLO-BRICEÑO,JORGE D; GONZÁLEZ-BARBA,GERARDO; LANDAETA,MAURICIO F; NIELSEN,SVEN N. |
| Twelve taxa of chondrichthyan fossils from strata assigned to the Upper Pliocene of the Horcón Formation, Valparaiso region, central Chile, are described and prior records paleobiogeography and paleoenvironmental implications are discussed. The fauna includes Callorhinchus sp., Heterodontus sp., Carcharodon carcharias, Isurus oxyrinchus, Galeorhinus galeus, Carcharhinus brachyurus, Hexanchus griseus, Squatina sp., Pristiophorus sp., Rajidae, Dasyatidae and Myliobatidae. This is one of the most diverse chondrichthyan associations of the Late Neogene of Chile and the rest of South America. |
| Tipo: Journal article |
Palavras-chave: South America; Paleobiogeography; Paleoecology; Neogene; Fossil sharks and rays. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2013000200008 |
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| Donovan, S.K.; Portell, R.W.; Veltkamp, C.J.. |
| Despite being diverse globally, Miocene echinoids are poorly known from Jamaica. Moderately diverse echinoids and other echinoderms have been identified mainly from fragmentary specimens collected from chalks and mass-flow deposits of the Lower Miocene Montpelier Formation, White Limestone Group, near Duncans, parish of Trelawny. This locality has yielded the most diverse association of fossil echinoderms known from the Miocene of Jamaica, including at least ten species in four classes. This fauna is comprised of the isocrinid crinoids Neocrinus sp. cf. N. decorus (Wyville Thomson) and Isocrinus sp.; the ophiuroid Ophiomusium? sp.; the asteroids Astropecten? spp.; and the echinoids Prionocidaris? sp., Histocidaris sp., Echinometra sp. cf. E. lucunter... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Systematics; Crinoids; Asteroids; Ophiuroids; Echinoids; Neogene; Caribbean; 42.72. |
| Ano: 2005 |
URL: http://www.repository.naturalis.nl/record/210104 |
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| Vanderaveroet, P. |
| The clay fraction of sediments drilled at Ocean Drilling Program (ODP) sites 1071 and 1072 is composed of variable proportions of chlorite, illite, smectite. kaolinite, vermiculite and mixed-layers such as illite/vermiculite (I/V) and chlorite/vermiculite (C/V). Miocene and Pliocene climates allowed formation of vermiculite and kaolinite. Pleistocene clay sedimentation was characterized by abundant chlorite and illite resulting from increasing erosion of the crystalline rocks outcropping in northern areas (e.g. Canadian Shield) developed under glacial climate. The clay minerals identified on the shelf are relatively similar to those deposited on the New Jersey continental slope and rise, and a similar trend in the composition of clay assemblages is... |
| Tipo: Text |
Palavras-chave: Plate-forme; New Jersey; Minéraux argileux; Néogène; Paléoclimat; Shelf; New Jersey; Clay minerals; Neogene; Palaeoclimate. |
| Ano: 2000 |
URL: http://archimer.ifremer.fr/doc/00325/43575/44043.pdf |
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| Beu, A.G.. |
| Tonnoidean gastropods in K. Martin’s and other collections in the Nationaal Natuurhistorisch Museum, Leiden (and a few other minor collections) are reidentified and classified. The resulting fauna of 99 species is very similar to that of the Indo-West Pacific today, 70% of species still inhabiting the Indonesian region. Species endemic to the Miocene and Pliocene rocks of Indonesia are Bursa sangirana sp. nov., and two new (unnamed) species similar to Bursina ignobilis (Beu); Cassis depressior Martin and C. preangerensis Martin; Cypraecassis denseplicata (Martin) and an unnamed species of Cypraecassis; Sconsia martini van Regteren Altena and S. pulchra Pannekoek; Echinophoria vandervlerki Martin (possibly a synonym of E. wyvillei (Watson)); Phalium... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Gastropoda; Tonnoidea; Neogene; Indonesia; Taxonomy; Biogeography; 42.73. |
| Ano: 2005 |
URL: http://www.repository.naturalis.nl/record/210121 |
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| Busulini, A.; Beschin, C.; Tessier, G.. |
| A reassessment of extinct species, fourteen in all, found in Europe and attributed to Calappilia has been carried out. For each species a short diagnosis is provided, and where necessary, its systematic position is reconsidered. Calappilia dacica lyrata is here elevated to species rank, while C. mainii is reassigned to Stenodromia A. Milne Edwards in Bouillé, 1873 and C. sexdentata is considered to be a nomen nudum. Photographs are provided of all type specimens available to us; most of these had so far been known only from (partially inaccurate) line drawings. For the first time, well-preserved chelipeds are described for the genus, having been found in articulation with a carapace of C. dacica. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Brachyura; Calappidae; Paleogene; Neogene; Reassessment; 42.74; 38.22. |
| Ano: 2014 |
URL: http://www.repository.naturalis.nl/record/523850 |
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| De Min, L.; Lebrun, J. F.; Cornee, J. J.; Munch, P.; Leticee, J. L.; Quillevere, F.; Melinte-dobrinescu, M.; Randrianasolo, A.; Marcaillou, B; Zami, F.. |
| The Karukéra spur is an easternmost submerged rise of the Lesser Antilles fore-arc in the Guadeloupe archipelago, culminating about 4000 m above the fore-arc basin 150 km west of the deformation front. The analysis of 3500 km 2D high-resolution multichannel seismic reflection and multibeam bathymetric data, and the study of 14 core samples, allow for the first time to reconstruct its sedimentary anatomy and tectonic evolution. Seven seismic units (Us1 to Us7) are evidenced, organized into four major depositional sequences separated by erosional surfaces. Units Us1 to Us4 thicken to the south-southeast on the spur. The sedimentary deposits rest upon a deeply eroded metamorphic basement of the Caribbean Plate as in La Désirade Island. Sequence 1 (units Us1... |
| Tipo: Text |
Palavras-chave: Lesser Antilles; Fore-arc; Karukéra spur; Neogene; Extensional tectonics; Basal erosion. |
| Ano: 2015 |
URL: http://archimer.ifremer.fr/doc/00252/36372/34912.pdf |
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| Registros recuperados: 31 | |
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