SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

This paper deals with Foraminifera from 1) shallow water samples gathered by dr. P. WAGENAAR HUMMELINCK in the Florida Keys, the Cayman Islands, Jamaica, Puerto Rico, Virgin Islands, several Lesser Antillean islands from St. Martin as far as Tobago, Margarita, Bonaire, and Curaçao; 2) a sample collected by dr. P.J. BERMÚDEZ off La Habana, Cuba, at a depth of 2—5 fathoms; 3) samples gathered by dr. TH. MORTENSEN off St. Croix (= Santa Cruz), W. of Frederiksted, at about 17.5°N 64°W, depths 100, 150 and 500 fathoms; off Thatch Island, between St. Croix and St. John, depth 14—16 fathoms, and a sample taken between Tortola and Jost van Dyke, at a depth of about 20 fathoms. The species belonging to the samples W. of St. Croix of the families Valvulinidae, the...

Rare and remarkable Foraminifera of the Caribbean Sea

Ano: 1976

URL: http://www.repository.naturalis.nl/record/506198

When studying samples from the Virgin Islands area, some new Foraminifera were found, together with other species of which little was known about their internal structure and taxonomic status. Most specimens came from samples W of St. Croix, collected by Th. Mortensen at about 17.5°N 64°W, depths about 200 and 300 m. These samples are very rich in benthonic Foraminifera, but relatively poor in planktonic species all of which are relatively small and with very thin tests. This material contained many specimens already described in previous publications (e.g. Hofker 1956, 1972 and 1976). The material studied has been deposited in the collections of the Netherlands Geological Survey at Haarlem, Netherlands.

Foraminifera from the tidal zone in the Netherlands Antilles and other West Indian Islands

Ano: 1979

URL: http://www.repository.naturalis.nl/record/506079

Through the kindness of Dr. P. WAGENAAR HUMMELINCK the author was enabled to study a number of samples from localities in the tidal zone of several West Indian islands. Previously, by courtesy of Dr. T. MORTENSEN, abundant material from some deepwater samples collected off Santa Cruz, Virgin Islands, could be studied, the foraminifera dentata of which were described in 1956. The latter material mainly consisted of dredged samples from a depth of 500 fathoms (17.5°N and 64°W), and contained a typical deep-sea fauna. Comparison of MORTENSEN’s and HUMMELINCK’s samples shows marked differences; these may be of importance, as the deep-sea samples and the shallow-water samples are from the same Caribbean area.

The Foraminifera of Piscadera Bay, Curaçao

Ano: 1964

URL: http://www.repository.naturalis.nl/record/506177

Piscadera Bay is situated 4 km West of Willemstad, Curaçao, between two limestone hills which have a height of about 100 m. It is a drowned river system, the entrance of which is almost completely blocked by a bar of coral debris reaching to about 2 meters above sea level. The following parts may be easily distinguished: 1) the Boca or “Outer Bay.” 2) the “Entrance,” and 3) the bay proper or “Inner Bay” (see map, Fig. 147). The Boca or “Outer Bay” is about 200 m wide and 6 m or less deep until (about 100 m off-shore) it reaches the outside border of a coastal platform which rapidly falls to several hundred meters. This sandy Boca is not only submitted to a turbid tidal flow of water from the Inner Bay, but, moreover, suffers from the increasing influence...

The Foraminifera of the Saba Bank Expedition, 1972 (Cicar Cruises 34, 35)

Ano: 1971

URL: http://www.repository.naturalis.nl/record/506144

INTRODUCTION Bottom samples obtained by means of a Van Veen grab during the 1972 Saba Bank Expedition (CICAR cruises 34 and 35) appeared to comprise many samples with Foraminifera. This material was kindly put at my disposal by Dr. D. van Harten of the Geological Institute of the University of Amsterdam, where the material had been deposited. Complementary to this, a large amount of samples from many stations of the Saba Bank area were obtained from the residues in containers with larger material stored in the Rijksmuseum van Natuurlijke Historie at Leiden, but many of these residues contained only few Foraminifera. Dr. W. Vervoort of the Leiden Museum asked me to identify all the Foraminifera from both collections. As a result 1360 cardboard slides could...

Recent Foraminifera from Barbados

Palavras-chave: 42.79.

Ano: 1980

URL: http://www.repository.naturalis.nl/record/317578

While visiting the Bellairs Research Institute at Barbados during one of his collecting trips to the West Indies, Dr. P. WAGENAAR HUMMELINCK took two large samples of surfacial floor sediments of the sea west of Barbados. These samples have been trusted to the author for foraminiferal research. The excursion on which the material has been collected, aboard the research vessel “Diadema”, had been organised by the Director of the Bellairs Institute, Dr. JOHN B. LEWIS. The results add to our knowledge of the benthonic communities of Barbados’ west coast (see also LEWIS, 1965, and MACINTYRE, 1967).

Zoological exploration of the continental shelf of Surinam: The foraminifera of the shelf of Surinam and the Guyanas

Ano: 1969

URL: http://www.repository.naturalis.nl/record/506128

INDEX Introduction.................................................................................................................................... P. 5 List of samples studied for Foraminifera .................................................................................... P. 7 Alphabetic list of species found in the samples .......................................................................... P. 10 Notes on the distribution of some species .................................................................................. P. 16 Systematic part .............................................................................................................................. P. 19 Genus Reophax Montfort, 1808...

Biological results of the Snellius expedition XXX : the foraminifera collected in 1929 and 1930 in the eastern part of the Indonesian Archipelago

Palavras-chave: 42.94.

Ano: 1983

URL: http://www.repository.naturalis.nl/record/317864

INTRODUCTION Of the bottom material collected by the Snellius-Expedition 78 samples contained Foraminifera. Many of these samples were extremely small, since they were gathered by means of piston core samplers; some were larger, as they were collected by means of a dredge; others were samples in shallow water at beaches or reefs. A l l samples were fixed in formaldehyde, so that after the 40 years they remained in store before they were studied, rests of protoplasma were seldom preserved. The numerous plankton samples, preserved in formaldehyde or in alcohol, did note contain planktonic Foraminifera; obviously the small amount of CaC03 in the samples caused the dissolution of the tests. The planktonic Foraminifera are not described here, as planktonic...

Foraminifera from the Bay of Jakarta, Java

Palavras-chave: Foraminifera; Indonesia; Snellius Expedition 30; 42.94.

Ano: 1978

URL: http://www.repository.naturalis.nl/record/323936

Foraminifera from the North coast of Java have been described by MILLET (1898-1904); by KEIJZER (1935). The Siboga Expedition did not sample on the Java coast; most of the species described by Millet were also collected elsewhere in the Indonesian Archipelago. Keijzer did not have the intention to describe the faunas he gathered, but he mentions the occurrence of many species at the coast at Rembang, East of Soerabaia and the Strait of Madoera. The list of species described by him is as follows: Cornuspira involvens (Reuss); not found in the Bay of Jakarta. Biloculina vespertilio Schlumberger; idem. Triloculina tricarinata d’Orbigny; found in the Bay of Jakarta. Triloculina trigonula (Lamarck); not found in the B. of J. Triloculina rupertiana (Brady);...

Some Foraminifera from the Aptian-Albian passage of Northern Spain

Ano: 1968

URL: http://www.repository.naturalis.nl/record/504495

During the summer of 1962, the author collected many Orbitolina-bearing samples in northern Spain with financial support of the ”Molengraaff Fonds”. One of the samples also was rich in other conspicuous foraminifera, which deserve a description.

Studies on the Genus Orbitolina (Foraminiferida)

Ano: 1965

URL: http://www.repository.naturalis.nl/record/505890

The genus Orbitolina is described in detail and is shown to be represented by one species only: Orbitolina lenticularis (Blumenbach). This species can be subdivided into form-groups, based on the characteristics of the megalospheric embryonic apparatus. The evolution of the species is orthogenetic. The specimens probably lived with the apex of the cone pointed downward. The microspheric test starts with a strepto-spiral, the megalospheric test with an embryonic apparatus consisting of a proloculus, a deuteroconch, and a varying number of epiembryonic chambers. The embryonic apparatus is the only consistent feature on which the age of Orbitolina can be determined; the method applied will be described. The neanic chamber layers consist of tubular chamber...