Results 11 to 20 of about 1,590 (161)

Marine Anoxia and Ocean Acidification During the End‐Permian Extinction

open access: yesGeophysical Monograph Series, Page 325-340., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Ying Cui   +4 more
wiley  

+4 more sources

Biomineralization of primary carbonate cements: a new biosignature in the fossil record from the Anisian of Southern Italy

open access: yesLethaia, EarlyView., 2021
Biomineralization is a generic term used to indicate biological‐mediated mineral formation. In carbonate mineralization, nucleation of crystals can be: (1) controlled directly by the organisms, like in the skeletal formation of most metazoans; (2) induced by microbial communities, by indirect precipitation mediated by their metabolic activities; or (3)
Adriano Guido   +4 more
wiley   +1 more source

The Rhynchonellide Brachiopod Cyclothyris ? globata (Arnaud, 1877) from the Santonian-Campanian of Pannonides, Carpatho-Balkanides and Dinarides, South-Eastern Europe [PDF]

open access: yesGeološki Anali Balkanskoga Poluostrva, 2002
The asymmetric rhynchonellide brachiopods Rhynchonella difformis Valenciennes in Lamarck and R. contorta d'Orbigny were often mentioned in the stratigraphic literature on Santonian-Campanian outcrops of the Pannonides, Carpatho-Balkanides and Dinarides ...
Radulović Vladan   +1 more
doaj   +1 more source

Palaeobiogeographical study of the Late Ordovician brachiopods of Iran based on quantitative analysis [PDF]

open access: yesJournal of Stratigraphy and Sedimentology Researches
Brachiopods, as one of the most important benthic fauna in the Late Ordovician, show a great abundance and diversity in many continents.
Akbar Sohrabi
doaj   +1 more source

Cemented on the Rock. A Pleistocene Outer Shelf Lithobiont Community from Sicily, Italy

open access: yesGeosciences, 2020
The lithobiont community encrusting an early Pleistocene palaeocliff cropping out north of Augusta (SE Sicily, Italy) was investigated based on field observations and laboratory inspection of two rocky samples.
Antonietta Rosso   +2 more
doaj   +1 more source

Brachiopod and mollusc biomineralisation is a conserved process that was lost in the phoronid–bryozoan stem lineage

open access: yesEvoDevo, 2022
Background Brachiopods and molluscs are lophotrochozoans with hard external shells which are often believed to have evolved convergently. While palaeontological data indicate that both groups are descended from biomineralising Cambrian ancestors, the ...
Joel Vikberg Wernström   +2 more
doaj   +1 more source

Horizontal Transfer and Gene Loss Shaped the Evolution of Alpha-Amylases in Bilaterians

open access: yesG3: Genes, Genomes, Genetics, 2020
The subfamily GH13_1 of alpha-amylases is typical of Fungi, but it is also found in some unicellular eukaryotes (e.g., Amoebozoa, choanoflagellates) and non-bilaterian Metazoa.
Andrea Desiderato   +3 more
doaj   +1 more source

Taxonomic diversity dynamics of early cretaceous brachiopods and gastropods in the Azerbaijanian domains of the Lesser Caucasus (Neo-Tethys Ocean) [PDF]

open access: yesGeološki Anali Balkanskoga Poluostrva, 2014
Palaeontological data available from the Azerbaijanian domains (Somkhit-Agdam, Sevan-Karabakh, and Miskhan-Kafan tectonic zones) of the Lesser Caucasus permit reconstruction of the regional taxonomic diversity dynamics of two groups of Early ...
Ruban Dmitry A.
doaj   +1 more source

Earliest ontogeny of early Cambrian acrotretoid brachiopods — first evidence for metamorphosis and its implications

open access: yesBMC Evolutionary Biology, 2018
Background Our understanding of the ontogeny of Palaeozoic brachiopods has changed significantly during the last two decades. However, the micromorphic acrotretoids have received relatively little attention, resulting in a poor knowledge of their ...
Zhiliang Zhang   +3 more
doaj   +1 more source

BRACHIOPODS FROM THE UPPER TRIASSIC REEF HABITATS OF THE NORTHERN CALCAREOUS ALPS (DACHSTEIN LIMESTONE, HOCHSCHWAB, AUSTRIA)

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2005
Upper Triassic brachiopods from 2 localities in the reef Dachstein Limestone of the SE Hochschwab massif in Styria, Austria are systematically described and illustrated.
MILOS SIBLÍK   +1 more
doaj   +1 more source

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