Results 31 to 40 of about 1,653 (179)

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

Resource partitioning among brachiopods and bivalves at ancient hydrocarbon seeps: A hypothesis.

open access: yesPLoS ONE, 2019
Brachiopods were thought to have dominated deep-sea hydrothermal vents and hydrocarbon seeps for most of the Paleozoic and Mesozoic, and were believed to have been outcompeted and replaced by chemosymbiotic bivalves during the Late Cretaceous. But recent
Steffen Kiel, Jörn Peckmann
doaj   +1 more source

Lithological characteristics and formation conditions of lower jurassic limestones occuring in the Patil mountain (south-western Crimea)

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2021
Background. In this article, we investigate an outcrop of the Lower Jurassic limestones of the Eskiorda suite located on the northern slope of the Bodrak River basin in the south-western Crimea.Aim. The outcrop under study is mentioned in the majority of
G. V. Agafonova   +4 more
doaj   +1 more source

A summary of the Brazilian Paraná Basin Ordovician [PDF]

open access: yesEstonian Journal of Earth Sciences, 2023
The study of the Ordovician of Paraná Basin culminated on the three-fold lithostratigraphic subdivision of the Rio Ivaí Group as follows: Alto Garças, Iapó and Vila Maria formations.
Carolina Zabini   +11 more
doaj   +1 more source

Siphonotretoid brachiopods – a thorny problem [PDF]

open access: yesEstonian Journal of Earth Sciences, 2023
Siphonotretoids are presently placed within the subphylum Linguliformea and the class Lingulata, where they constitute a small, relatively short-lived superfamily and order, appearing near the end of the mid-Cambrian, with most forms becoming extinct ...
Lars E. Holmer   +4 more
doaj   +1 more source

The Middle Cenomanian basal series of Planinica, Western Serbia [PDF]

open access: yesGeološki Anali Balkanskoga Poluostrva, 2002
Sedimentary rocks of the Upper Cretaceous basal series found at the village of Planinica, Western Serbia, are composed of thick coarse clastics and beds and intercalations of medium- to fine-grained clastics. The series lies transgressively over Jurassic
Rabrenović Dragoman   +5 more
doaj   +1 more source

Retreat, Resilience, and Reorganization: Decoding the Post-Paleozoic Evolution of Brachiopods

open access: yesDiversity
The Paleozoic–Modern Evolutionary Fauna transition is defined by the ecological replacement of brachiopods by bivalves. However, it remains debated whether post-Paleozoic brachiopods experienced a simple, continuous global decline or a complex ...
Facheng Ye
doaj   +1 more source

Biometric Relationship Between Growth Pattern and Biological Reproduction of a Living Fossil Benthic Brachiopods (Lingula anatina Lamarck, 1801) in Aceh Northern Shore

open access: yesIlmu Kelautan, 2023
Brachiopods are a group of ancient marine invertebrates that are still found today, so they are known as "living-fossil". The purpose of this study was to determine reproductive biology through sex ratio approach, gonad maturity stages, body mass weight ...
Chitra Octavina   +8 more
doaj   +1 more source

Brachiopod Molecular Phylogeny [PDF]

open access: yes, 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

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