Results 41 to 50 of about 16,891 (228)

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

Geološki 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

Brachiopod Molecular Phylogeny [PDF]

, 2018
Analysis by parsimony, maximum likelihood and distance methods of newly determined nuclear-encoded SSU rRNA gene sequences from 23 species of articulate brachiopods, six inarticulate brachiopods, two phoronids and an ectoproct, together with other sequences from published and unpublished sources show that lophorates cluster with protostome, not ...
Cohen, B.L., Gawthrop, A.B.
openaire   +1 more source

LATE CARBONIFEROUS BRACHIOPODS FROM KARAKORUM, PAKISTAN

Rivista Italiana di Paleontologia e Stratigrafia, 1999
Carboniferous rocks from North Karakorum display sharp lateral variations in lithology and thickness suggesting accumulation in half-grabens during continental rifting between the Karakorum block and northern Gondwana. Different Carboniferous successions,
LUCIA ANGIOLINI, HOWARD BRUNTON, ANDREA ZANCHI   +2 more
doaj   +1 more source

Crinoid phylogeny: a preliminary analysis (Echinodermata: Crinoidea) [PDF]

, 2004
We describe the first molecular and morphological analysis of extant crinoid high-level inter-relationships. Nuclear and mitochondrial gene sequences and a cladistically coded matrix of 30 morphological characters are presented, and analysed by ...
Ameziane, N., Cohen, B.L., De Forges, B.R., Eleaume, M.   +3 more
core   +3 more sources

Confirmation of the impact origin of the Late Ordovician Tvären impact structure (southeast Sweden) and emplacement of impactites in a marine setting

Meteoritics &Planetary Science, EarlyView.
Abstract The Tvären structure in southeastern Sweden has been listed as a confirmed marine‐target impact structure for decades. However, to date, no measurements and/or indexed data of planar deformation features in quartz grains from the structure have been published or any other unequivocal evidence of impact.
Katarzyna J. Gajewska, Sanna Alwmark, Mikael Calner, Sylvain Richoz, Jens Ormö, Erik Sturkell, Carl Alwmark   +6 more
wiley   +1 more source

Changes in the generic diversity of brachiopods at the intervals of the largest Phanerozoic mass extinctions

Известия высших учебных заведений: Геология и разведка
Background. Brachiopods evolved throughout the Phanerozoic, and their study contributes to the knowledge of the largest biotic crises. Accumulation and revision of paleontological information require regular re-evaluation of the influence of these crises
D. A. Ruban
doaj   +1 more source

Chapter II-2 - Edward S. Morse grows up [PDF]

, 1983
In which teenage Edward S. Morse of Salem, Massachusetts, begins a life-long love affair with shells, leaves home for Boston, studies with Louis Agassiz at the Museum of Comparative Zoology in Cambridge, and becomes the world's leading authority on ...
Rosenstone, Robert A.
core  

Molecular evolution and morphological speciation in North Atlantic brachiopods (Terebratulina spp.) [PDF]

, 1991
Morphological and molecular differentiation of western and eastern North Atlantic brachiopods were examined by morphometric analysis of six shell characteristics (<i>n</i>= 144), allozyme electrophoresis at six nuclear gene loci (<i>n ...
Balfe, P., Cohen, B.L., Cohen, M., Curry, G.B.   +3 more
core   +1 more source

Climate conditions on the South‐Iberian Palaeomargin during the latest Pliensbachian to early Toarcian: A mineralogical and geochemical study from hemipelagic deposits

Sedimentology, EarlyView.
ABSTRACT The integrated analysis of lithofacies, mineralogy and geochemistry of the hemipelagic marine succession exposed in La Cerradura section (South‐Iberian Palaeomargin) provides new information to characterise the palaeoenvironmental conditions during the latest Pliensbachian to early Toarcian, including the Jenkyns Event.
Chaima Ayadi, Isabel Abad, Elisa Laita, Ali Mokhtar Samet, Matías Reolid   +4 more
wiley   +1 more source

Progress and Challenges in Phylogenomics and Genomics of Lophotrochozoa/Spiralia

Zoologica Scripta, EarlyView.
ABSTRACT Lophotrochozoa is one of the three major bilaterian groups comprising more than half of the bilaterian phyla. Lophotrochozoa includes among others Mollusca, Annelida, Platyhelminthes and Rotifera. Despite representing such a large proportion of animal diversity, they are historically understudied and genomic resources have been scarce. However,
Torsten H. Struck
wiley   +1 more source