Paleocene and Eocene deposits on the eastern margin of the Gulf of Gdańsk (Yantarny P-1 borehole, Kaliningrad region, Russia)

Abstract

As so ci ate Ed i tor: Micha³ Zatoñ Lithological and palynological stud ies of Paleogene siliciclastic de pos its from the Yantarny P-1 bore hole lo cated on the western coast of the Sambian Pen in sula (Kaliningrad re gion, Rus sia) show that the suc ces sion is char ac ter ized by nu mer ous sed i men tary dis con ti nu ities re lated to lithification ho ri zons and ero sional sur faces. Sed i men tary gaps are emphasised by hardgrounds. Palynological data sug gest the Selandian-Priabonian age of the suc ces sion and in di cate a num ber of sig nif icant strati graphic gaps. An im por tant change in heavy min eral com po si tion is rec og nized be tween the Paleocene and Eocene de pos its in the area stud ied. A sig nif i cant num ber of re worked Cre ta ceous microfossils is ob served in the Selandian part of the suc ces sion stud ied.

Synchrotron-radiation computed tomography uncovers ecosystem functions of fly larvae in an Eocene forest

“…Tracing of the precise origin of every piece was impossible due to the nature of the amber collections. More detailed information on the deposit can be found in Weitschat and Wichard (2010) and Kasiński et al (2020). Notes on specimen deposition: All specimens studied here are deposited in public collections (See "Results: taxonomic account" for the full list of specimens).…”

Checklist of fossil liverworts suitable for calibrating phylogenetic reconstructions

“…eight amber deposits yielded leafy liverworts to date, namely 95-100 million-year old (Ma) alaskan amber (mid-Cretaceous;heinrichs et al 2011b), ca. 99 Ma burmese amber (Kachin amber) from northern Myanmar (mid-Cretaceous;ross et al 2010, Shi et al 2012, Yu et al 2019, 52 Ma Cambay amber from India (eocene; rust et al 2010), 34-41 Ma baltic amber from europe (eocene; Sadowski et al 2017, Kasiński et al 2020, 35-37 Ma rovno amber from the ukraine (eocene; Perkovsky et al 2010), presumably 24 Ma bitterfeld amber (oligocene; dunlop 2010), 15-20 Ma dominican amber (Miocene; Penney 2010, Iturralde-vinet &MacPhee 2019), and15-23 Ma Mexican amber (Miocene;Solórzano Kraemer 2010, Serrano-Sánchez et al 2015. Fossils in amber are mostly three-dimensionally preserved in life-like fidelity and often show minute details that are relevant for classification, e.g., cell shape, cell wall ornamentation, gemmae, or leaf teeth.…”

A new enigmatic lineage of Dascillidae (Coleoptera: Elateriformia) from Eocene Baltic amber described using X-ray microtomography, with notes on Karumiinae morphology and classification

“…Two Australian Upper Triassic genera, Apheloodes Dunstan, 1923 andLeioodes Dunstan, 1923, described based on a single elytron each, were removed from Dascillidae and placed in Coleoptera incertae sedis, and the North American Miocene Protacnaeus Wickham, 1914 andMiocyphon Wickham, 1914 were transferred to Psephenidae and Scirtidae, respectively. The monotypic genus Mesodascilla Martynov, 1926 from the Jurassic Karatau locality in Kazakhstan, which was originally assigned to Dascillidae (Martynov, 1926), has been re-142 R. Kundrata et al: A new enigmatic lineage of Dascillidae from Eocene Baltic amber cently treated either as a member of Eulichadidae (Kirejtshuk and Azar, 2013) or Lasiosynidae (Yan et al, 2014). Jin et al (2013c) kept only three genera which contain fossil species in Dascillidae.…”