a stratigraphic section from the tirgan formation was selected in arkan village nearby bojnourd city in order to study echinoderm fauna systematically. many specimens of echinoderms, especially toxasteridae which is associated with brachiopods were collected and studied systematically in this paper. microscopie slides were also prepared and studied. all slides contain benthic foraminifers and c...

Integrated sedimentological, palynological, and palynofacies analyses of the Arrifes section in central Algarve Basin (southern Portugal) provided new information on age environments this Lower Cretaceous sequence. The sedimentary succession at consists fossiliferous interbedded limestones, marly marls, dated as latest Hauterivian to late Barremian (Lower Cretaceous) based key dinoflagellate ta...

Since 1950, diverse assemblages of Mesozoic vertebrates have been described from the Galve area (Teruel Province, NE Spain). More than fifty taxa have been noted, including fishes, crocodyliforms, pterosaurs, dinosaurs and mammals. The Galve fossil sites occur in an Upper Jurassic to Lower Cretaceous succession spanning some 30 myr, divided into five formations, representing marginal marine and...

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...

A stratigraphic section from the Tirgan Formation was selected in Arkan village nearby Bojnourd city in order to study echinoderm fauna systematically. Many specimens of echinoderms, especially toxasteridae which is associated with brachiopods were collected and studied systematically in this paper. Microscopie slides were also prepared and studied. All slides contain benthic foraminifers and c...

The Lower Cretaceous Carbonate deposits of the Dariyan Formation of the HighZagros Belt are mainly composed of thick to medium bedded limestone. These depositscontain abundant and diversified benthic foraminifera which have been recovered fromcarbonate rocks. A rich assemblage of microfossils with characteristic: Palorbitolinalenticularis (Blumenbach), Mesorbitolina subconcava (Leymerie), Mesor...

The biostratigraphic distribution of orbitolinids for the Barremian SE France proposed hereafter is calibrated on ammonite biozonation. This work based study eleven sections with associated to macrofossils (ammonites and/or echinids) significant in terms biostratigraphy or overlain levels bearing above macrofossils.

New species of Leptotarsus (Tipulidae s.str.) are described from the Early Cretaceous beds of Brazil (Santana Fm. Aptian/Albian, ca. 112 Mya) and Spain (La Huérguina Fm., Late Barremian, ca. 126 Mya), vis. L. grimaldii sp. nov., L. cretaceus sp. nov., L. martinsnetoi sp. nov., L. buscalioniae sp. nov., L. ibericus sp. nov. and L. contractus sp. nov. Males of three species possess extremely long...

We review the fossil records of spinosaurid dinosaurs in order to discuss this group’s evolution and distribution in Europe and North Africa during the Early Cretaceous. Along with their eastern Laurasian distribution during the Cretaceous, these theropods have been found in coastal deposits of Europe and North Africa dated from the Barremian to the Cenomanian. The main occurrences of spinosaur...

large benthic foraminifera and dasycladalean green algae are the most common and important (micro) fossils in lower cretaceous shallow-water sediments of the tethyan realm. in this paper, we introduced such taxa and their importance in age dating of lower cretaceous strata in the kopet-dagh sedimentary basin. also, according to determinations of index taxa (fauna and flora) in this period, the ...