Results 11 to 20 of about 16,891 (228)

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

An Increase in Animal Diversity was Facilitated by Ecologically-Driven Brain Complexity Throughout the Cambrian. [PDF]

open access: yesBioessays
The Brain‐First Hypothesis suggests that the Cambrian transition from animals with simple body plans and simple brains to more complex animals was driven by a selection for brains with increased neural processing, following increased ecological complexity, and the networks underlying brain development were co‐opted to pattern other complex systems ...
Chipman AD.
europepmc   +2 more sources

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

DNA sequence evidence for speciation, paraphyly and a Mesozoic dispersal of cancellothyridid articulate brachiopods [PDF]

open access: yes, 2002
Because the classification of extant and fossil articulate brachiopods is based largely upon shell characters observable in fossils, it identifies morphotaxa whose biological status can, in practice, best be inferred from estimates of genetic divergence.
Cohen, B.L., Luter, C.
core   +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

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

Discriminating faunal assemblages and their palaeoecology based on museum collections : the Carboniferous Hurlet and Index limestones of western Scotland [PDF]

open access: yes, 2010
Historical collections of Scottish Carboniferous macrofossils stored at the British Geological Survey (BGS), Edinburgh include the sole remaining sources of palaeontological data from numerous localities.
Akhurst, M.C.   +3 more
core   +2 more sources

Cosmology, Oscillating Physics and Oscilllating Biology [PDF]

open access: yes, 1993
According to recent reports there is an excess correlation and an apparent regularity in the galaxy one-dimensional polar distribution with a characteristic scale of 128 $h^{-1}$ Mpc.
A. Chodos   +37 more
core   +2 more sources

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