Biostratigraphic correlation, paleoenvironment stress, and subrosion pipe collapse: Dutch Rhaetian shales uncover their secrets

Late Triassic (Rhaetian) ophiuroids from Winterswijk, the Netherlands; with com- ments on the systematic position of Aplocoma (Echinodermata, Ophiolepididae)*

An ophiuroid assemblage from Rhaetian dark shales in a subrosion pipe (or sinkhole) penetrating middle Triassic (Muschelkalk) strata, and, outside the subrosion pipe, disconcordantly overlying middle Triassic strata, east of Winterswijk, the Netherlands, is described, discussed and assessed taxonomically. The material consists of nearly intact and articulated as well as wholly disintegrated ske...

Chronology of the Late Cenozoic Patagonian glaciations and their correlation with biostratigraphic units of the Pampean region (Argentina)

The absolute chronology of the Patagonian glaciations is one of the most complete in the world and probably the best available for the Southern Hemisphere outside Antarctica. The oldest known Patagonian glaciations took place between approximately 7 and 5 Ma (Latest Miocene–Earliest Pliocene). A minimum of eight glaciations occurred in the Middle–Late Pliocene (Oxygen Isotopic Stages 54–82). Th...

Teeth and their Secrets – Forensic Dentistry

In addition to their important functions in mastication and esthetics, the teeth may also be used as a weapon and under certain circumstances, may leave information as to the identity of the biter. The individuality of the human dentition frequently allows the Forensic Odontologist to reach a strong opinion of association in cases of identification and bite mark analysis. Such analysis can ofte...

Random lasers yield their secrets - optics.org

‘Cryptic’ exons reveal some of their secrets

By regulating the inclusion of 'cryptic' exons in messenger RNA in nerve cells, NOVA proteins are able to influence the abundance of the corresponding proteins.