Results 41 to 50 of about 2,119,061 (274)

First records of Ischnacanthiformes (“Acanthodii”) from the Upper Devonian Catskill Formation in north-central Pennsylvania, U.S.A. [PDF]

open access: yes, 2023
First records of Ischnacanthiformes (“Acanthodii”) from the Upper Devonian Catskill Formation in north-central Pennsylvania, U.S ...
Sage Kennedy (16375934)   +5 more
core   +1 more source

DEVONIAN CONODONTS FROM SPITI HIMALAYA, INDIA

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2023
The present paper describes the lower Upper Devonian conodont fauna from the upper units of Muth Formation, Spiti Valley, Himalaya.
A. D. AHLUWALIA   +3 more
doaj  

AGNI-DRILL - A COMPLEX DRILLING FLUID FOR DRILLING IN KYNOVSK MUDSTONES

open access: yesИзвестия высших учебных заведений: Нефть и газ, 2016
Oil pools developed by PJSC «Tatneft» are mainly confined to the Devonian deposits, the top of which is represented by Kynovsk argillites. The construction of a horizontal wellbore in the Upper Devonian terrigenous strata (D0) is complicated by the ...
L. B. Huzina, R. A. Usmanov, S. I. Golyb
doaj   +1 more source

Provenance reconstructions. Article 1. Mineralogical and petrographic approaches and methods

open access: yesЛитосфера, 2020
Research subject. This is the first in the series of four articles, which aims to review existing provenance reconstruction tools.Methods and materials.
A. V. Maslov   +3 more
doaj   +1 more source

An ontological morphological phylogenetic framework for living and extinct ray‐finned fishes (Actinopterygii)

open access: yesThe Anatomical Record, EarlyView.
Abstract The ray‐finned fishes include one out of every two species of living vertebrates on Earth and have an abundant fossil record stretching 380 million years into the past. The division of systematic knowledge of ray‐finned fishes between paleontologists working on extinct animals and neontologists studying extant species has obscured the ...
Jack Stack
wiley   +1 more source

Middle to upper Devonian (givetian and frasnian) shallow-water carbonates of Western Europe: fades analysis and cyclicity [PDF]

open access: yes, 1997
The Middle and Upper Devonian (Givetian-Frasnian) shallow-water carbonate facies of western Europe were deposited as a large-scale transgressive succession over continental facies of the Old Red Continent.
Garland, Joanna
core  

An Upper Devonian foredeep basin in the Southern Central Iberian Zone (Variscan Iberian Massif): Consequences for Variscan plate dynamics [PDF]

open access: yes
New field research and revision of previous works in the Variscan Iberian Massif unravel the existence of an Upper Devonian foredeep basin in the southern Central Iberian Zone, close to the suture area with the Ossa-Morena Zone.
Martín Parra, Luis Miguel   +6 more
core   +1 more source

Sarcopterygian and other Fishes from the Marine Upper Devonian of Colorado, U.S.A. [PDF]

open access: yesFossil Record, 1998
The fish fauna of Upper Devonian deposits of SW Colorado is described and compared with those of Central Colorado. The osteolepidid Litoptychus is redescribed including skull roof, cheek, palatoquadrate, cleithrum and postcranial elements.
H.-P. Schultze, J. Chorn
doaj   +3 more sources

A new species of Lonchidiidae (Hybodontiformes) from the Late Jurassic of Brazil (Aliança Formation, Jatobá Basin)

open access: yesThe Anatomical Record, EarlyView.
Abstract The Aliança Formation (Jatobá Basin) represents lacustrine deposits formed in oxygenated waters that hosted a diverse fauna, including Hybodontiform sharks. Within this group, the Family Lonchidiidae comprises 11 valid genera, with Parvodus previously reported in Brazilian deposits from the Brejo Santo Formation (Araripe Basin, Late Jurassic ...
Larissa de Souza Ribeiro   +1 more
wiley   +1 more source

Reservoir characterization and potential of the old red sandstone around the inner moray firth, NE Scotland [PDF]

open access: yes, 1993
Old Red Sandstone deposition in North East Scotland occurred during Devonian times within the Orcadian Basin, a northeast-southwest elongated structure. The basin formed in an extensional tectonic regime that resulted from gravitational collapse of over ...
Forbes, Douglas
core  

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