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article

Taxonomic significance of short forms of middle Permian Pseudoalbaillella Holdsworth and Jones, 1980 (Follicucullidae, Radiolaria)

Tsuyoshi Ito, Qinglai Feng, Atsushi Matsuoka, T. Ito, more

Revue de micropaleontologie > 2015 > 58 > 1 > 3-12

Middle Permian Pseudoalbaillella from the Xiaodong area in South China were studied using fossil morphology. Short forms of Pseudoalbaillella fusiformis (Holdsworth and Jones), Pseudoalbaillella internata Wang, and Pseudoalbaillella monacantha (Ishiga and Imoto), characterized by a short and skirt-like pseudoabdomen, were confirmed. We conclude that the short forms were derived from their respective...

article

Magnesium isotopes in high-temperature saddle dolomite cements in the lower Paleozoic of Canada

Denis Lavoie, Simon Jackson, Isabelle Girard, D. Lavoie, more

Sedimentary Geology > 2014 > 305 > Complete > 58-68

Mg isotopes are used to better understand the genesis of hydrothermal saddle dolomite cements in Lower Paleozoic successions in Canada. These cements occur in fault-bounded dolostones that overlay lithologically diverse basement rocks; Ordovician dolomite lies over the Precambrian craton, whereas the Silurian and Devonian dolomites overlay a succession of tectonically accreted sedimentary, volcanic...

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Detrital zircons U–Pb SHRIMP ages and provenance of La Modesta Formation, Patagonia Argentina

Pilar Moreira, Raúl Fernández, Francisco Hervé, C. Mark Fanning, more

Journal of South American Earth Sciences > 2013 > 47 > Complete > 32-46

This paper summarizes the geology of the Paleozoic La Modesta Formation in Patagonia, Argentina, and presents new SHRIMP U–Pb dating of detrital zircons from muscovite-chlorite schist and tourmalinite. Also complementary geochemical and lead isotopic data are presented, indicating that the protoliths were formed from upper crustal rocks by the contribution of a large input from recycled (or felsic)...

article

The influence of mantle flow on intracontinental basins: Three examples from Australia

Alexander Young, Nicolas Flament, Lisa Hall, Andrew Merdith

Basin Research > 33 > 2 > 1429 - 1453

During the Paleozoic, sedimentary basins developed within Gondwana without evolving to diverging plate boundaries. Such intracontinental basins present long subsidence histories with multiple phases of accelerated subsidence that are not always easily explained by far‐field tectonic forces, and may be driven by processes other than rifting and thermal subsidence. Here we investigate the subsidence...

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New location of the well-known Ordovician trilobite Asaphus expansus (Wahlenberg, 1821) from north-western Poland

Tomasz Borowski, Piotr Daniszewski

World News of Natural Sciences > 2021 > 34 > 82-87

This report documents the new location of the representative Ordovician trilobite Asaphus expansus. This well-known trilobite was discovered in the “Storkowo” Mining Plant in the central part of the West Pomeranian Province in Poland.

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The occurrence of known genera of fossils in the Mineral Raw Materials Mine in Mielenko Drawskie, West Pomeranian Province, Poland

Tomasz Borowski

The Institute of Biopaleogeography named under Charles R. Darwin > 2021 > 6 > 1-75

This paper presents the results of many years of search for fossils that were discovered at the Mineral Raw Materials Mine in Mielenko Drawskie West Pomeranian Province, Poland. The most common fossils found in this mine are Ordovician trilobites of the genera Asaphus Brongniart, 1822, and Megistaspis Jaanusson, 1956, and Ordovician nautiloids of the genera Endoceras Hall, 1847, and Orthoceras Bruguière,...

article

Better together: Joint consideration of anatomy and morphology illuminates the architecture and life history of the Carboniferous arborescent lycopsid Paralycopodites

William A. DiMichele, Richard M. Bateman

Journal of Systematics and Evolution > 58 > 6 > 783 - 804

Paralycopodites Morey & Morey, a Carboniferous‐age arboreous lycopsid that grew in the tropical wetlands of Pangea, is the phylogenetically basalmost member of the Carboniferous stigmarian lycopsids to be conceptually reconstructed. We update its description through reciprocal illumination between anatomy (coal‐balls) and gross morphology (adpressions). Revised assessment of its architecture and...

article

Morphology and Systematics of the Late Paleozoic Gastropods Deseretospira Gordon and Yochelson and Termihabena gen. nov.

A. V. Mazaev

Paleontological Journal > 2019 > 53 > 5 > 455-464

A new genus and species Termihabena lirata gen. et sp. nov. is described from the Lower Permian reef limestones of Shakh-Tau (southern Cisuralia). The new genus includes another five species: T. nikitowkensis (Yakowlew, 1899), T. asiatica (Licharew, 1967), T. millegranosa (Girty, 1934), T. pinegensis (Mazaev, 2006), and T. sp. (Batten, 1985). T. pinegensis is re-described based on new, additional...

article

Birth and evolution of the Paleocarnic Chain in the Southern Alps: a review

Federico Pasquaré Mariotto, Corrado Venturini

International Journal of Earth Sciences > 2019 > 108 > 8 > 2469-2492

The present work is aimed at reviewing the state of the art of the studies centered on the pre-collisional and collisional, Variscan evolution of the eastern Southern Alps. The main focus is on the Carnic Alps, a geologically spectacular and extremely complex area, which has been a major subject of study for structural geologists, stratigraphers, and paleontologists for more than a century. After...

article

Nonhydrolyzable Part of Soil Organic Matter in Buried and Modern Soils

T. V. Alekseeva, B. N. Zolotareva, Yu. G. Kolyagin

Eurasian Soil Science > 2019 > 52 > 6 > 632-643

Results of the study of humus composition in about 200 modern soils of different genesis and more than 100 buried Pleistocene and Holocene paleosols have been collected and analyzed. The content of the nonhydrolyzable part of soil organic matter (NH OM) in the paleosols is comparable with that in the modern soils (50 ± 15% and 54 ± 21%, respectively). Thus, NH OM does not accumulate in the buried...

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A New Species of the Genus Bellazona (Gastropoda) from the Early Permian Reef Limestones of Shakhtau

A. V. Mazaev

Paleontological Journal > 2019 > 53 > 3 > 252-256

A new species Bellazona acuta sp. nov., is described from the Early Permian reef limestone of Shakhtau (southern Cisuralia). This find significantly expands the geochronological range of the genus Bellazona, which was formerly believed to be limited to the Mississippian of the southwestern United States. The morphology of Bellazona and a closely related genus Cerithioides is discussed.

article

The oldest deep-boring bivalves? Evidence from the Silurian of Gotland (Sweden)

Anna Lene Claussen, Axel Munnecke, Mark A. Wilson, Irina Oswald

Facies > 2019 > 65 > 3 > 1-15

Compared to modern counterparts, bioerosion is rare in Paleozoic reefs, especially macro-bioerosion. The unique and enigmatic Silurian reefs from Gotland (Sweden), composed of bryozoans and microbial laminates, show evidence of a large amount of bioerosion. The samples contain Trypanites trace fossils, as well as a large number of undescribed macroborings. Small articulated bivalve shells are preserved...

article

A visage of early Paleozoic Japan: Geotectonic and paleobiogeographical significance of Greater South China

Yukio Isozaki

Island Arc > 28 > 3 > n/a - n/a

The current state of knowledge on the early Paleozoic evolution of Japan is reviewed. Although early Paleozoic Japan marked the foundation of long‐lasting subduction‐related orogenic growth throughout the Phanerozoic, details of this have not been fully revealed. Nevertheless, U‐Pb dating of zircons both in Paleozoic granitoids and sandstones is revealing several new aspects of early Paleozoic Japan...

article

From Regeneration to Coloniality: Multiple Buds in the Solitary Coral Bothrophyllum conicum Trautschold, 1879 (Rugosa) in the Carboniferous of the Moscow Basin

E. S. Kazantseva, S. V. Rozhnov

Paleontological Journal > 2018 > 52 > 14 > 1710-1722

Bothrophyllum conicum displays three known types of regeneration. The damaged zone is rebuilt during epimorphosis, as observed in cases of healing. Compensatory regeneration, typical for many groups of corals, is expressed in the restoration of the diameter of corallites and the typical arrangement of septa after reduction of diameter and “rejuvenation” of the arrangement of septa. Morphallaxis is...

article

Paleozoic Ammonoids: Historical Pathways of the Development of Morphological Diversity

T. B. Leonova

Paleontological Journal > 2018 > 52 > 14 > 1746-1755

The history of Paleozoic ammonoids can be subdivided into two large intervals: Devonian and Carboniferous–Permian. There were two major evolutionary pathways: changes in the external shell morphology and changes in the suture, a character observed only in cephalopods. Almost all major shell types and ornamentation appeared at early stages of the evolution of the subclass Ammonoidea (archaic diversity)...

article

Morphological Diversity of the External Shell Sculpture of Paleozoic Cephalopods: How Did It Arise and What Does It Mean?

I. S. Barskov

Paleontological Journal > 2018 > 52 > 14 > 1741-1745

article

A new mesenosaurine from the lower Permian of Germany and the postcrania of Mesenosaurus: implications for early amniote comparative osteology

Frederik Spindler, Ralf Werneburg, Jörg W. Schneider

PalZ > 2019 > 93 > 2 > 303-344

Based on an exceptionally well-preserved articulated postcranial skeleton, the early amniote Cabarzia trostheidei gen. et sp. nov. is described. As the lack of the skull hampers its taxonomic assignment, a large sample of basal amniotes is included as part of an exhaustive comparison. Considering the slender, long-limbed proportions of the skeleton, several potential determinations are suggested in...

article

Bacteriomorph Structures in Nodules, a Characteristic of Euxinic Conditions of Nodule Formation

A. I. Antoshkina

Paleontological Journal > 2018 > 52 > 10 > 1114-1125

Electron microscopic, spectroscopic, and geochemical study of Middle Ordovician shamosite, Wenlockian calcite, and Lower Carboniferous siderite nodules revealed the presence of organic matter and traces of microbial organisms involved in the formation of iron oxides and hydroxides and mineralized microbial films. The structure and composition of the films show high similarity to mineralized glycocalyx,...

article

Dimetrodon (Synapsida: Sphenacodontidae) from the cave system at Richards Spur, OK, USA, and a comparison of Early Permian–aged vertebrate paleoassemblages

Kirstin S. Brink, Mark J. MacDougall, Robert R. Reisz

The Science of Nature > 2019 > 106 > 1-2 > 1-10

The Early Permian Richards Spur locality is unique in preserving a highly diverse faunal assemblage in a cave system, composed of synapsids, reptiles, and anamniotes. However, the presence of Dimetrodon, the most common synapsid of Early Permian localities of the southwestern USA, has never been recorded from the site. Here, we describe for the first time the morphology and histology of a small neural...

article

Constraining Age of Deformation Stages in the South-Western Part of Verkhoyansk Fold-and-Thrust Belt by Apatite and Zircon Fission-Track Analysis

S. V. Malyshev, A. K. Khudoley, U. A. Glasmacher, G. G. Kazakova, more

Geotectonics > 2018 > 52 > 6 > 634-646

—Zircon fission track analysis was carried out for Mesoproterozoic to Lower Paleozoic sedimentary rocks of the South-Verkhoyansk sector of the Verkhoyansk fold-and-thrust belt. The age of thrusting stages was constrained in this region. The early stage of deformations dated as 160 Ma, the main stage dated as from 70 to 90 Ma. Thermal history modeling on apatite allowed us to establish the youngest...

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Search results

Taxonomic significance of short forms of middle Permian Pseudoalbaillella Holdsworth and Jones, 1980 (Follicucullidae, Radiolaria)

Magnesium isotopes in high-temperature saddle dolomite cements in the lower Paleozoic of Canada

Detrital zircons U–Pb SHRIMP ages and provenance of La Modesta Formation, Patagonia Argentina

The influence of mantle flow on intracontinental basins: Three examples from Australia

New location of the well-known Ordovician trilobite Asaphus expansus (Wahlenberg, 1821) from north-western Poland

The occurrence of known genera of fossils in the Mineral Raw Materials Mine in Mielenko Drawskie, West Pomeranian Province, Poland

Better together: Joint consideration of anatomy and morphology illuminates the architecture and life history of the Carboniferous arborescent lycopsid Paralycopodites

Morphology and Systematics of the Late Paleozoic Gastropods Deseretospira Gordon and Yochelson and Termihabena gen. nov.

Birth and evolution of the Paleocarnic Chain in the Southern Alps: a review

Nonhydrolyzable Part of Soil Organic Matter in Buried and Modern Soils

A New Species of the Genus Bellazona (Gastropoda) from the Early Permian Reef Limestones of Shakhtau

The oldest deep-boring bivalves? Evidence from the Silurian of Gotland (Sweden)

A visage of early Paleozoic Japan: Geotectonic and paleobiogeographical significance of Greater South China

From Regeneration to Coloniality: Multiple Buds in the Solitary Coral Bothrophyllum conicum Trautschold, 1879 (Rugosa) in the Carboniferous of the Moscow Basin

Paleozoic Ammonoids: Historical Pathways of the Development of Morphological Diversity

Morphological Diversity of the External Shell Sculpture of Paleozoic Cephalopods: How Did It Arise and What Does It Mean?

A new mesenosaurine from the lower Permian of Germany and the postcrania of Mesenosaurus: implications for early amniote comparative osteology

Bacteriomorph Structures in Nodules, a Characteristic of Euxinic Conditions of Nodule Formation

Dimetrodon (Synapsida: Sphenacodontidae) from the cave system at Richards Spur, OK, USA, and a comparison of Early Permian–aged vertebrate paleoassemblages

Constraining Age of Deformation Stages in the South-Western Part of Verkhoyansk Fold-and-Thrust Belt by Apatite and Zircon Fission-Track Analysis

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