The Paleocene–Eocene Thermal Maximum (PETM, 56 Ma) was a phase of rapid global warming associated with massive carbon input into the ocean–atmosphere system from a 13C-depleted reservoir. Many midlatitude and high-latitude sections have been studied and document changes in salinity, hydrology and sedimentation, deoxygenation, biotic overturning, and migrations, but detailed records from tropica...

study area is located in district of bajestan and ferdows cities, ne of iran. structurally, this area is part of lut block. the oldest exposed rocks, to the north of intrusive rocks and in eastern bajestan, are meta-chert, slate, quartzite, thin-bedded crystalline limestone and meta-argillite. the sedimentary units are: sardar formation (carboniferous), jamal formation (permian), sorkh shale an...

Alpinia is considered the largest genus of Zingiberaceae with ca. 250 species occurring in tropical and subtropical Asia, Australia, Pacific Islands. The historical biogeography was conducted to explain where originated how it migrated other regions. phylogeny, divergence times ancestral area reconstruction were performed by using molecular data based on comprehensive taxon sampling. Our result...

Physical dormancy (PY) due to a water-impermeable seed/fruit coat is one of the characteristic features many species Fabaceae; however, timing and context evolution this trait are poorly understood. In investigation, fossil molecular data used constrain PY. The phylogenetic reconstruction programs GB-to-TNT BEAUTi/BEAST create chloroplast gene-based (rbcL matK) phylogenies taxa with well-repres...

Abstract. The Paleogene history of biogenic opal accumulation in the North Atlantic provides insight into both evolution deepwater circulation basin and weathering responses to major climate shifts. However, existing records are compromised by low temporal resolution and/or stratigraphic discontinuities. In order address this problem, we present a multi-site, high-resolution record silica (bioS...

Rhynchocephalia, a once diverse clade of lizard-like reptiles, had nearly global distribution during much the Mesozoic. By Late Cretaceous rhynchocephalians underwent marked reduction in their diversity and biogeographic range, with sparse records only deeply nested taxa (e.g., Sphenodontinae) found Upper Cretaceous–Paleocene Patagonia Miocene–Recent New Zealand. Here we describe partial dentar...

The late Paleocene to earliest Eocene sedimentary record in the eastern Tremp-Graus Basin (southern Pyrenees, Spain) consists of a mud-prone fluvial succession informally known as ‘Upper Red Garumnian’, which is dominantly composed non-channelized deposits interspersed with channel bodies. records evidence variations water discharge at multiple temporal scales. One-hundred-and-eighty sand-prone...