Devonian stratigraphy in Estonia: current state and problems [PDF]
Estonian Journal of Earth Sciences, 2012 An updated version of the Devonian stratigraphical chart of Estonia with comments is presented. Estonian regional stratigraphical units are correlated with the standard conodont zonation and miospore zonation, used in the western part of the East ...
Elga Mark-Kurik, Anne Põldvere
doaj +1 more source
Comments on distribution and taphonomy of Devonian placoderms in the Holy Cross Mountains, Poland
, 2020 of early jawed vertebrates that appeared in the Silurian period and reached maximum diversification during the Devonian. Placoderms became extinct at the end of the Devonian. Placoderms played an important role in the history of geological studies in the
P. Szrek
semanticscholar +1 more source
A large Late Devonian arthrodire (Vertebrata, Placodermi) from Poland [PDF]
Estonian Journal of Earth Sciences, 2018 The arthrodire placoderm, Dunkleosteus sp., is reported from the Upper Devonian (Frasnian) of the Holy Cross Mountains, Poland. The material comprises partially preserved remains of two individuals found in the Kellwasser-like horizon of the Płucki ...
Piotr Szrek, Olga Wilk
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Hydrodynamics of fossil fishes [PDF]
, 2014 Fromtheir earliest origins, fishes have developed a suite of adaptations for locomotion in water, which determine performance and ultimately fitness. Even without data from behaviour, soft tissue and extant relatives, it is possible to infer a wealth of ...
Alexander RM +40 more
core +2 more sources
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
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SYSTEMATIC POSITION OF ANTIARCHS (VERTEBRATA, PLACODERMI) FROM THE FAMENNIAN OF TVER REGION, RUSSIA
Известия высших учебных заведений: Геология и разведка, 2017 New materials of the placoderm fish Bothriolepis heckeri Luksеvics from the Famennian of the Bilovo locality (Tver Region) are studied. This species is very similar to Livnolepis zadonica (H.Obrucheva) in the structure of cranial and postcranial armours ...
S. V. Moloshnikov, V. V. Linkevich
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A new rhynchocephalian from the late jurassic of Germany with a dentition that is unique amongst tetrapods. [PDF]
, 2012 Rhynchocephalians, the sister group of squamates (lizards and snakes), are only represented by the single genus Sphenodon today. This taxon is often considered to represent a very conservative lineage.
A Günther +50 more
core +2 more sources
Revision of the Late Devonian ptyctodonts (Vertebrata, Placodermi) from southern Poland [PDF]
Estonian Journal of Earth SciencesNew studies on Frasnian ptyctodonts, including the revision of historic material in addition to the description of new material, have resulted in the detailed description of two species of Ptyctodus (Ptyctodus obliquus, Ptyctodus kielcensis), eight ...
Katarzyna Grygorczyk +2 more
doaj +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 [PDF]
PeerJ, 2018 Background Yunnanolepidoids constitute either the most basal 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
doaj +2 more sources
Histology and affinity of anaspids, and the early evolution of the vertebrate dermal skeleton [PDF]
, 2016 The assembly of the gnathostome bodyplan constitutes a formative episode in vertebrate evolutionary history, an interval in which the mineralized skeleton and its canonical suite of cell and tissue types originated. Fossil jawless fishes, assigned to the
Bristol Doctoral College +4 more
core +3 more sources