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| Registros recuperados: 29 | |
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| 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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| MacGillivray, C.M.I.; Donovan, S.K.. |
| This research introduces a Geographical Information Systems (GIS) model that predicts the location and relative susceptibility of humid subtropical hillslopes to sheetwash erosion. The extent of the erosion was based on the conservation potential of the existing vegetation cover. This is an original deductive and deterministic model (Potential Erosion Detection, PED) incorporating regionally applicable physical and land use factors thought to be influential. These were climate (agroclimatic zones), topography (aspect and slope angle), soil (texture, drainage, depth, aggregation), vegetation cover and land use (tillage activity). The study looked at surface erosion as a perceived problem in a post-colonial economy. The processes, cause and effect of... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Jamaica; Buff Bay; Geographical Information Systems; IDRISI; Geomorphology; Soil; Erosion; 38.42. |
| Ano: 2007 |
URL: http://www.repository.naturalis.nl/record/217419 |
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| Harper, D.A.T.; Donovan, S.K.. |
| Pleistocene brachiopods are poorly known from the Antillean region, but are locally common in forereef deposits of Jamaica (lower Pleistocene Manchioneal Formation) and Barbados (Coral Rock). Of the four species known, two are new. Lacazella sp. cf. L. caribbeanensis Cooper, an encrusting thecideidean, is known from only three valves. Other species are terebratulides. Tichosina inconstanta sp. nov. is a large, ventribiconvex Tichosina species of elongate oval to tear-drop shaped outline, variably uniplicate with a pedicle foramen of moderate diameter. It differs from the similar Tichosina? bartletti (Dall) in having a larger pedicle foramen and a less-marked plication. Argyrotheca barrettiana (Davidson) is a medium to large, usually transverse Argyrotheca... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Brachiopoda; Pleistocene; Systematics; Jamaica; Barbados; Antilles; 42.72; 38.22. |
| Ano: 2007 |
URL: http://www.repository.naturalis.nl/record/314198 |
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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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| 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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| Donovan, S.K.; Lewis, D.N.. |
| The specific diversity of fossil crinoids from the Much Wenlock Limestone Formation at Dudley, Worcestershire, and in Shropshire differ by an order of magnitude. The latter are relatively depauperate and include only about six nominal species. Over 165 years ago, a specimen from Coalbrookdale, Shropshire, was identified as Cyathocrinites tuberculatus Miller (= the taxocrinid flexible Protaxocrinus tuberculatus (Miller)). This specimen, although indifferently preserved, is distinct from other Silurian crinoids of the British Isles and is described herein as a monobathrid camerate, Macrostylocrinus? jefferiesi sp. nov. This species has a moderately large, conical dorsal cup with at least 20 arms, broad primibrachials, a granular surface sculpture and no ray... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Systematics; Crinoids; Macrostylocrinus; Wenlock; Silurian; England; 42.72; 38.22. |
| Ano: 2008 |
URL: http://www.repository.naturalis.nl/record/314207 |
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| Prins, C.F.W.; Donovan, S.K.. |
| Contents Introduction.......................................................................................................................................................1 The meeting.......................................................................................................................................................2 Excursions...........................................................................................................................................................2 References...........................................................................................................................................................4 Introduction The Nationaal Natuurhistorisch Museum Naturalis at Leiden, The Netherlands, was... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 38.59. |
| Ano: 2004 |
URL: http://www.repository.naturalis.nl/record/317312 |
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| Donovan, S.K.; Jagt, J.W.M.. |
| A single example of Oichnus excavatus Donovan & Jagt, infesting the holasteroid echinoid Hemipneustes striatoradiatus (Leske), is reported from the upper Meerssen Member, Maastricht Formation (uppermost Maastrichtian), of the former Blom quarry, Berg en Terblijt, southern Limburg, The Netherlands. This is the first evidence that O. excavatus may be more widely distributed in the type area of the Maastrichtian than previously assumed. The embedment structure occurs just below the ambitus and close to the peristome, suggesting that the producing organism may have been ingesting detritus from the sea floor rather than filter feeding, the more usual interpretation of its behaviour. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Embedment structure; Trace fossils; Oichnus; Echinoids; Hemipneustes; Maastrichtian; The Netherlands; 42.72. |
| Ano: 2005 |
URL: http://www.repository.naturalis.nl/record/210110 |
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| Donovan, S.K.; Jagt, J.W.M.. |
| Scaphopods remain poorly known from the type area of the Maastrichtian Stage in northeast Belgium and the southeast Netherlands. At least three species appear to be represented, but incomplete preservation (i.e., lack of shell material) hampers a detailed systematic treatment of most specimens. In museum collections, the name Dentalium nysti Binkhorst van den Binkhorst, 1861 (= D. binkhorsti Pilsbry & Sharp, 1898; non D. nysti d’Orbigny, 1852) is often used rather indiscriminately for both genuine scaphopods and internal moulds of serpulid worm tubes. Here, we describe and illustrate Antalis? binkhorsti, Fissidentalium? sp. 1 and Dentaliidae sp. indet., all of Maastrichtian age, as well as a late Campanian form, Fissidentalium? sp. 2. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Cretaceous; Antalis; Fissidentalium; Serpulids; Systematics; 38.22; 42.73. |
| Ano: 2012 |
URL: http://www.repository.naturalis.nl/record/428929 |
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| Donovan, S.K.; Pickerill, R.K.. |
| James speculated that Paleogene ‘flysch-wildflysch’ deposits of the Caribbean region may all have a related genesis associated with one or more bolide impacts. The principal arguments used to promote this idea were: (1) that many successions may have been dated incorrectly and are actually related to the end Cretaceous (K/T) event and/or other bolide impacts; and (2) common olistostromes may have been transported by impact-related phenomena. The deposits discussed by James included the Richmond and Font Hill formations of Jamaica. The Richmond Formation of the Wagwater Belt is Paleogene, not Cretaceous, and olistostromic blocks are a common feature of the sedimentary succession of Jamaica. No extraterrestrial event need be invoked to support their... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Jamaica; Paleogene; Richmond Formation; Tectonics; K/T event; 38.10. |
| Ano: 2009 |
URL: http://www.repository.naturalis.nl/record/314209 |
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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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| Collins, J.H.S.; Donovan, S.K.. |
| Recently discovered crabs from the Middle to Upper Eocene of northern Bonaire, Netherlands Antilles, include well-preserved carapaces of Montezumella rutteni Van Straelen, originally described from an incomplete holotype. The more comprehensive description of this species provided herein includes documentation of the first attributable left cheliped of Montezumella. From the same locality, Ocalina sublevis sp. nov. considerably extends the known geographic range of this genus. Both of these Tethyan decapod genera apparently migrated west from the Mediterranean region during the Eocene. Despite these new determinations, decapod crustaceans remain poorly known from the Eocene of the Antillean islands. Additionally, Callianassa pustulosa Withers from the... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Crustacea; Decapoda; Systematics; Eocene; Bonaire; Netherlands Antilles; 42.85. |
| Ano: 2005 |
URL: http://www.repository.naturalis.nl/record/210098 |
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| Donovan, S.K.; Jackson, T.A.; Brown, I.C.; Wood, S.J.. |
| Geology has been taught at the University of the West Indies, Mona, since 1961. The associated Geology Museum (UWIGM) opened to the public in 1969/1970, although the idea for such a museum was over 100 years old at that time. The collections of the UWIGM share many hazards with those in museums in other parts of the world, such as dust, insect pests and indifferent specimen records, and some that are less common, such as earthquakes and hurricanes. The curatorship is not tenured. Since the mid 1980s the UWIGM has become a more dynamic visitor attraction in many ways, shaking off its ‘old-fashioned’ appearance and expanding the displays to include, for example, its first mounted vertebrate skeleton. An aggressive collections policy involves establishing a... |
| Tipo: Article / Letter to the editor |
Palavras-chave: University of the West Indies; Jamaica; Geology; Museums; Collections; 38.59. |
| Ano: 2004 |
URL: http://www.repository.naturalis.nl/record/215455 |
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| Registros recuperados: 29 | |
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