The Hirnantian Glisstjärn Formation (Normalograptus persculptus graptolite Biozone) is a succession of limestones and shales onlapping the Katian Boda Limestone in the Siljan District, Sweden. It contains a conspicuous, up to several decimeter thick bed densely packed with bipolarly oriented, orthoconic cephalopod conchs that can reach lengths of more than 120 cm. Conch fragmentation, bioereosion ...

Life in northern Norway has been dependent on the sea and marine resources since initial settlement following the retreating ice at least 11,500 years ago. Small islands have played a significant role for maritime communities since the Mesolithic when occupation of offshore islands reflected the maritime orientation of hunter‑gatherer settlement. Although settlement along the coast, including ...

Ice-free areas are expanding worldwide due to dramatic glacier shrinkage and are undergoing rapid colonization by multiple lifeforms, thus representing key environments to study ecosystem development. It has been proposed that the colonization dynamics of deglaciated terrains is different between surface and deep soils but that the heterogeneity between communities inhabiting surface and deep soils ...

Soft-bodied cephalopods such as octopuses are exceptionally intelligent invertebrates with a highly complex nervous system that evolved independently from vertebrates. Because of elevated RNA editing in their nervous tissues, we hypothesized that RNA regulation may play a major role in the cognitive success of this group. We thus profiled messenger RNAs and small RNAs in three cephalopod species ...

Temporal genomic data hold great potential for studying evolutionary processes such as speciation. However, sampling across speciation events would, in many cases, require genomic time series that stretch well back into the Early Pleistocene subepoch. Although theoretical models suggest that DNA should survive on this timescale1, the oldest genomic data recovered so far are from a horse specimen ...

We describe an update of MirGeneDB, the manually curated microRNA gene database. Adhering to uniform and consistent criteria for microRNA annotation and nomenclature, we substantially expanded MirGeneDB with 30 additional species representing previously missing metazoan phyla such as sponges, jellyfish, rotifers and flatworms. MirGeneDB 2.1 now consists of 75 species spanning over ∼800 million ...

<ol> <li>Facing rapid environmental changes and anthropogenic habitat destruction, animal behavioural plasticity becomes an adaptive potential that needs to be considered in conservation strategies along with, for example, genetic diversity. Here, we evaluate to what extent non-invasive environmental DNA (eDNA) methods may contribute to the assessment of intraspecies behavioural plasticity in terms ...

In 1977 a monument in memory of the Finnish immigrants was erected in Vadsø, the capital town of the county of Finnmark. The unveiling ceremony of the monument was an exceptional event, where the Norwegian king Olav, the Swedish king Carl Gustav and the Finnish president Uhro Kekkonen attended. The purpose of the monument was to pay tribute to the Finnish immigrants and their contribution to the ...

This essay focuses on the narrative mosaics of Iñupiat Alaskan Ada Delutuk Blackjack, hired seamstress on an occupation colony on Wrangel Island in 1921–23, organized by renowned Canadian Arctic explorer and writer Vilhjalmur Stefansson. While the venture resulted in the tragic deaths of Blackjack’s four companions on the island, she became the expedition’s sole survivor and kept a diary during the ...