Results 41 to 50 of about 169 (124)

Stratigraphic distribution and systematic composition of the Middle-Upper Devonian placoderms (anti-archs) from Central Kazakhstan

Известия высших учебных заведений: Геология и разведка, 2016
The stratigraphie distribution and systematic composition of the Middle-Upper Devonian remains of antiarchs from the sediments of Central Kazakhstan are analyzed. Central Kazakhstan ichthyofauna contains mainly endemic taxons of antiarchs.
S. V. Moloshnikov
doaj   +1 more source

Asia–Gondwana connections indicated by Devonian fishes from Australia: palaeogeographic considerations

Journal of Palaeogeography, 2020
Middle Palaeozoic vertebrate fossil occurrences are summarised for Australia, with reference to faunal connections between Asia and East Gondwana, as first indicated by fish distributions of Lower Devonian fossil sites. Major endemic groups discussed are
Gavin Charles Young, Jing Lu
doaj   +1 more source

Dataset of antiarch placoderms (the most basal jawed vertebrates) throughout Middle Paleozoic [PDF]

, 2022
Abstract. Antiarch placoderms, the most basal jawed vertebrates, have the potential to enlighten the origin of the last common ancestor of jawed vertebrates. Quantitative study based on credible data is more convincing than qualitative study. To reveal the antiarch distribution in space and time, we created a comprehensive structured dataset of ...
Zhaohui Pan, Zhibin Niu, Zumin Xian, Min Zhu   +3 more
openaire   +1 more source

Stages of development of the Middle-Late Devonian ICHTHYOFAUNA (Placodermi: Antiarchi) from the northern Eurasia

Известия высших учебных заведений: Геология и разведка, 2019
Three stages, namely Middle Devonian (I), Early Late Devonian (II) and Late Late Devonian (III), are distin-guished in the evolution of antiarchs (Placodermi, Antiarchi) in the Middle-Late Devonian of Northern Eurasia.
S. V. Moloshnikov
doaj   +1 more source

Some notes on a variability of Bothriolepidids (Placodermi, Antiarchi): unusual specimen of Livnolepis Heckeri (Luksevics) from the famennian of Tver region, European Russia

Известия высших учебных заведений: Геология и разведка, 2019
The fragment of the skull cap of placoderm Livnolepis heckeri (Luksevics) from the Bilovo Formation (Famennian, Upper Devonian) near the Bilovo Village of Tver Region has been described.
S. V. Moloshnikov, V. V. Linkevich
doaj   +1 more source

Analyses on Prestress Loss and Flexural Performance of the Laminated Bamboo Beam Applied with Prestressed BFRP Sheet

Advances in Civil Engineering, Volume 2019, Issue 1, 2019., 2019
Inspired by the studies about wooden beam applied with prestressed steel plate and bamboo beam strengthened by fiber‐reinforced polymer (FRP), this paper aims to explore the applicability of the prestressed basalt fiber‐reinforced polymer (BFRP) sheet to the laminated bamboo beam and the variation of the flexural performance of the laminated bamboo ...
Qingfang Lv, Ye Liu, Yi Ding, Flora Faleschini   +3 more
wiley   +1 more source

An Experimental Investigation on Flexural Behavior of Reinforced Concrete Beams Strengthened by an Intelligent CFRP Plate with Built‐In Optical Fiber Bragg Grating Sensors

Journal of Sensors, Volume 2018, Issue 1, 2018., 2018
The difficulties induced from high‐durability package, large‐scale measurement, and sensor installation make it a big challenge but an urgent need to predict the mechanical behavior of strengthened reinforced concrete structure with the externally bonded fiber‐reinforced polymer (FRP) plate under harsh environments and rough construction process. In an
Zhi Zhou, Zhenzhen Wang, Carlos Ruiz
wiley   +1 more source

Redescription of Phymolepis cuifengshanensis (Antiarcha: Yunnanolepididae) using high-resolution computed tomography and new insights into anatomical details of the endocranium in antiarchs

, 2018
Background. Yunnanolepidoids constitute either the basal-most consecutive segments or the most primitive clade of antiarchs, a highly diversified jawed vertebrate group from the Silurian and Early Devonian periods.
Yajing Wang, Min Zhu
core   +1 more source

Data from: Redescription of Phymolepis cuifengshanensis (Antiarcha: Yunnanolepididae) using high-resolution computed tomography and new insights into anatomical details of the endocranium in antiarchs

, 2018
Background. Yunnanolepidoids constitute either the basal-most consecutive segments or the most primitive clade of antiarchs, a highly diversified jawed vertebrate group from the Silurian and Early Devonian periods.
Zhu, Min, Wang, Yajing
core   +1 more source

Lungfish‐like antero‐labial tooth addition and amphibian‐like enameloid‐enamel transition in the coronoid of a Devonian stem actinopterygian

Journal of Anatomy, Volume 247, Issue 3-4, Page 418-441, September/October 2025.
The tooth patterning logic, which cannot be inferred from surface morphology, is revealed by visualizing buried tooth remnants in 3D. The primary teeth are added labially, initially organized in radial rows, which transition into linear rows where the coronoid becomes slender.
Donglei Chen
wiley   +1 more source