Some Upper Cretaceous and Lower Tertiary Foraminifera from Aragua and Guárico, Venezuela

Biostratigraphy of Late Maastrichtian larger foraminifers in Jamaica and the importance of <i>Chubbina</i> as a Late Maastrichtian index fossil

“…Base of Maastrichtian adjusted based on Gradstein et al (1995). in Jamaica (Krijnen et al, 1993;Gunter et al, 2002). Elements of this assemblage are also seen in Cuba (Seiglie & Ayala-Castañares, 1963) and probably Venezuela (Renz, 1955;Gunter et al, 2002). In the White Rock River Bridge section, Chubbina enters in the upper part of this assemblage zone.…”

“…Robinson, 1968), larger foraminifers, such as Orbitoides, Pseudorbitoides, Omphalocyclus and Vaughania are not present, although they were reported to be abundant elsewhere in Jamaica (Jiang & Robinson, 1987;Krijnen et al, 1993;Gunter et al, 2002), but not from measured sections. Broadly coeval larger foraminifers are also distributed widely elsewhere in the Caribbean (Cuba: Palmer, 1934;Rutten, 1935;Brönnimann, 1954aBrönnimann, , b, 1955aBrönnimann, , b, 1956Seiglie & Ayala-Castañares, 1963), Central America (Mexico: Ayala-Castañares, 1963Rosales-Domínguez et al, 1997;Caus et al, 2002), South America (Venezuela: Renz, 1955) and Florida (Cole & Applin, 1970) and have been correlated with the European Orbitoides succession (Caus et al, 1996).…”

A new species of <i>Omphalocyclus</i> (Foraminiferida) from the Upper Cretaceous of Jamaica and its stratigraphical significance

“…It is, therefore, possible that this Venezuelan fauna contains the same assemblage of orbitoid foraminifera as the upper Maldon Limestone. Renz (1955) considered that his unit bearing O. cf. macroporus and O. palmeri was Maastrichtian, based on the presence of Vaughanina Palmer, Omphalocyclus Bronn and Sulcoperculina Thalmann.…”

“…Orbitoides is widespread (e.g. Renz, 1955;Seiglie & Ayala-Castañares, 1963;Jiang & Robinson, 1987), while Omphalocyclus has been reported from Cuba (Ellis, 1932;Rutten, 1935;Kupper, 1954;Seiglie & Ayala-Castañares, 1963) and northern Venezuela (Renz, 1955).…”

Geology and Metamorphism of Cretaceous Rocks in Eastern Carabobo State, Venezuelan Coast Ranges

“…H. H. Renz (1955) describes groups of reworked Cenomanian ammonites in the Escorzonera formation where it unconformably overlies the Villa de Cura Group in the San Juan de los Morros district. No nearby source is known for these ammonites, and it seems unlikely that they could have been carried far without becoming dispersed and broken (Konigsmark, 1958 thesis).…”