Originally described from the Alazan Clay, Mexico, the species has a long range, in Trinidad from Middle Eocene to top Middle Miocene, in central and southeastern Falcon through most of the measured sections. Comparing the holotype illustrations, B. Saunders; Cambridge University Press, Cambridge; 1994; 408 pp. The specimen illustrated from southeastern Falcon Fig. Dorothia cylindrica Nuttall , Diaz de Gamero 19770, p.
New taxa of foraminifera from the Erster Teil: Cuche- und Toco-Formation. In southeastern Falcon both species appear first in the Early Miocene. Their ranges and illustrations are however attached to the individual parts: Trinidad Figs. The Mito Juan Formation Fig. We know that the stratigraphic resolution based on benthic forms is less detailed than that based on planktics, and that their distribution, both geographical and bathymetric, is environmentally controlled, although less so in deeper than in shallower waters.
Closely similar specimens also occur in the Eocene of Trinidad see B. The reason for this simultaneous appearance lies in the more favourable shallower water fades as represented by the Ste. Bolivina byramensis Cushman from Renz, 1948, pi. As interpreted in Trinidad and Falcon, U. The illustrated specimen from Trinidad Fig. Later, he was working as an exploration biostratigrapher regional Carboniferous to Miocene biostratigraphy of Iran and the Persian Gulf with Pan American International Oil Company in Teheran 1958-1964.
See also annotations under Bolivina marginata multicostata. In the Agua Salada Formation of southeastern Falcon the characteristic species has been recorded from the Globorotalia menardiilGlobigerina nepenthes Zone. For annotations see Bolivina caudriae. In 1953 he completed his PhD thesis on Alfred Senn's collection of the Eocene to Oligocene foraminifera of the Oceanic Formation in Barbados B. The species is characterized by its large size in comparison to other Hanzawaia species. A few species that occur in Trinidad and Falcon are also recorded from the deepwater Oceanic Formation of Barbados.
The species is scarce in the Globorotalia fohsi fohsi Zone of the Agua Salada Formation of southeastern Falcon. Present also in age equivalent beds in eastern Venezuela. No institution with interests in benthic foraminifera can afford to be without this book and specialists in the group will feel deprived without it. North Atlantic Cenozoic foraminifera from the Lower Cretaceous of Germany and Engfera. They form part of a group which ranges throughout the Eocene and Oligocene and which may include C.
The taxon is recorded from the Late Miocene of Trinidad, continuing into the Pliocene. Consequently, the Uvigerina ranges as they 351 Annotated taxonomic list occur in Trinidad have to be viewed in this light. In Barbados it is reported from the Late Eocene and Oligocene of the Oceanic Formation. A detailed geological map of the overall Conset Bay area, with a modern interpretation of the complicated structure of the various nappes forming this part of the accretionary prism, is given in Torrini et al. New taxa of foraminifera from the Cretaceous and basal Tertiary of Trinidad, West Indies. In Trinidad the species appears to be confined to the Middle Miocene Karamat Formation. See also taxonomic notes under Bolivina caudriae.
A late Tertiary fauna of Venezuela and other related regions. Haplophragmoides coronatum Brady , Renz 1948, p. New OligoceneMiocene foraminifera from Venezuela. The species ranges in Trinidad from Early Eocene to Late Oligocene. Holotypus: Gabonella kugleri Beckmann 1974 Collection to hypotypes described and illustrated in. Hoffmeister 1938 mentions the presence of the genus Sorites. Planktic foraminifera are present in both the shales and the limestones.
For annotations see also O. While the taxa of the above listed genera are included for all three areas - Trinidad, Falcon, Barbados - the additionally chosen species were selected more for their local significance. Barbados; Annotated taxonomic list of late Early Eocene to Middle Miocene benthic foraminifera of Trinidad, Venezuela Falcon , and Barbados; References; Index. The deeper water benthic species are tied in to the zonal scheme used in Plankton Stratigraphy, published by Cambridge University Press in 1985. The same is true for the specimens illustrated by Beckmann 1953 from the Eocene part of the Oceanic Formation Annotated taxonomic list of Barbados Fig.