The global Triassic timescale based on tetrapod biochronology remains a robust tool for both global and regional age assignment and correlation. The Lootsbergian and Nonesian land-vertebrate faunachrons (LVFs) are of Early Triassic age; cross correlation of part of the Lootsbergian to the Olenekian and all or part of the Nonesian to the Anisian lacks support. In the South African Karoo basin, b...

The Triassic section north of Currie in southern Elko County, Nevada, is almost 500 m thick and is assigned to the Thaynes Group and overlying Shinarump Formation of the Chinle Group. The Thaynes Group disconformably overlies the Permian Gerster Formation and is mostly calcareous shale with interbedded wackestones that yield marine invertebrate fossils, especially ammonoids. The Shinarump Forma...

The fossil record preserves a wide range of events that might be used to build timescales and correlate strata from place to place. The events include the originations and extinctions of species, the occurrence of distinctive faunal assemblages, magnetic field reversals, changes in ocean chemistry, and volcanic ash falls. The fundamental task is to determine the global sequence of all these eve...

In this study biostratigraphy of the Upper Cretaceous deposits (Gurpi Formation) in Sepidan section located in the Interior Fars basin (SW Iran) was studied. The Gurpi Formation in this section consists of 360 m lime shale, argillaceous limestone and shale laid continuously on the Ilam Formation and with a paraconformity under the Pabdeh Formation. Nine genera and 27 species of planktonic foram...

In a study of the Eomyidae from the Upper Freshwater Molasse of Bavaria, Fahlbusch (1975: 85) concluded that a small collection of molars from Eitensheim is monospecific, and suggested that it belongs to a new, unnamed species of Keramidomys. However, Prieto (2010: tab. 1) regards Falbusch’s evaluation of the fossil as questionable and in need of a revision; problems with the assignment of the ...

Conodonts are the most important fossil remains from the largest Phanerozoic extinction as well as the mass extinction of the late Paleozoic and could be used for exact dating during this period. Triassic deposits located in the Elikah Formation contain exposures in most of the Alborz sections as well as the Zal section in northwestern Iran. In this study, the Elikah Formation was investigated ...

The Arrifes section (Algarve Basin, Southern Portugal) has been studied from the viewpoint of charophyte biostratigraphy. previous sedimentological studies in this showed that it is built interbedding continental and marine facies contain both palynomorphs (pollen, spores, dinoflagellates), providing an excellent sedimentary context to perform direct correlations between domains. In present wor...

In New Mexico (NM), Upper Triassic strata of the Chinle Group are nonmarine siliciclastic red beds containing an an extensive fossil record that demonstrates a late Carnian to early Rhaetian age, about 230-203 Ma. Magnetostratigraphic studies of the Chinle Group in NM began in the 1970s and have produced complete Chinle magnetostratigraphies in east-central NM (Tucumcari basin) and north-centra...