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

Abstract

Abstract. The succession of larger foraminifers from the White Rock River Bridge section of the Guinea Corn Formation (Late Maastrichtian) in Jamaica, West Indies, contains: Sulcoperculina dickersoni (Palmer), Ayalaina rutteni (Palmer), Orbitoides cf. megaloformis Papp & Küpper, Vaughania cubensis Palmer and Chubbina cardenasensis (Barker & Grimsdale). A. rutteni occurs in the lower beds and C. cardenasensis occurs in the upper beds. The orbitoid foraminifer Or. cf. megaloformis is restricted to the middle beds. The White Rock River Bridge Section can be correlated to the standard Guinea Corn successions using lithological/biostratigraphic markers and rudist marker beds, and linked ages derived from Sr-isotope values. This indicates that Or. cf. megaloformis occurs in the last 1.3 Ma of the Cretaceous in the Caribbean and that its evolution was retrograde compared to coeval populations in Europe. The first appearance of Chubbina represents a valuable datum since the genus occurs in various different biofacies (both with and without orbitoid foraminifers) and allows correlation in the Caribbean, Central America and Florida.

Multiple Orbitoides d’Orbigny lineages in the Maastrichtian? Data from the Central Sakarya Basin (Turkey) and Arabian Platform successions (Southeastern Turkey and Oman)

“…Retrograde evolution within Orbitoides has been reported previously from the Caribbean bioprovince. There Mitchell (2005) reports the occurrence in uppermost Maastrichtian strata of a form he terms "Orbitoides cf. megaloformis".…”

“…Blue and red rectangular envelopes describe the max and min range values for these mean parameters. Data used is a compilation of that from Caus et al (1996), Mitchell (2005) and this paper. The approximate relative positions of other commonly accepted species (O. sanctaepelagiae and O. gensacicus) are shown on this evolutionary line, although no data were available for these taxa from the quoted sources although more 'advanced' populations were recorded from the debris layers over the hardgrounds present, and the intervals between the hardgrounds contain specimens with rather smaller embryons, a phenomenon ascribed to the specific environmental conditions (Baumfalk & Willemsen, 1986).…”

Late Cretaceous alveolinaceans (larger foraminifera) of the Caribbean palaeobioprovince and their stratigraphic distribution

“…in the Rio Minho section of Jamaica, a stratigraphical unit is only a few metres below the FO of Chubbina jamaicensis (Chubbina cardenasensis in Mitchell 2005). This therefore suggests that the interval containing the 'Upper Assemblage' in Mexico and the 'Chubbina beds' of Jamaica can be correlated.…”

Biostratigraphy and paleoenvironment of Maastrichtian foraminiferal assemblages from a succession located NW of Tuxtla Gutiérrez, Chiapas (SE Mexico)

“…Butterlin (1981) proposed a Chubbina Zone for the Campanian-Maastrichtian. Later, Mitchell (2005) commented that the first appearance of this genus is probably an important regional bioevent for dating the late Maastrichtian of the Greater Caribbean Region (the Antilles, Florida, Central America and northern South America). In addition, Chubbina macgillavryi Robinson is also considered to be a latest Maastrichtian marker (Vicedo et al, 2013, Figure 4).…”

“…The larger foraminifera identified in the area as Ayalaina rutteni (Palmer) and Smoutina cruysi Drooger, Orbitoides browni (Ellis) are fossils which are well known as endemic forms of the Caribbean region and adjacent areas from the Bahamas (Hottinger, 1972); Mexico (Butterlin, 1981;Michaud, 1987;Rosales-Domínguez et al, 1997;Omaña, 2006;Omaña and Alencaster, 2019); Guatemala (Scott, 1995;Fourcade et al, 1999); Belize (Schafhauser et al, 2003); Cuba (Ellis, 1932;Palmer, 1934;1934a;Vaughan, 1934;Voorwijk, 1937;Seiglie and Ayala-Castañares, 1963); Jamaica (Cole and Applin, I970;Krijnen, 1970;Mitchell, 2005); Haiti (Butterlin, 1956); Costa Rica (Jaccard et al, 2001;Baumgartner-Mora and Percy, 2002); Venezuela ( de Cizancourt, 1949;Renz, 1955); Colombia (Caudri, 1948, p. 447). Additionally, these genera have been reported on Pacific islands (Beckmann, 1976;Premoli Silva and Brusa, 1981;.…”