Results 11 to 20 of about 278 (105)
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 +3 more sources
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 +2 more sources
Известия высших учебных заведений: Геология и разведка, 2015 The stratigraphic distribution of antiarch remains in the Middle-Upper Devonian of central, southern and east-south regions of East European Platform (EEP), western slope of South Urals and Siberia are analyzed.
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
doaj +3 more sources
The early diversification of ray-finned fishes (Actinopterygii): hypotheses, challenges and future prospects. [PDF]
Biol Rev Camb Philos Soc, 2023 ABSTRACT Actinopterygii makes up half of living vertebrate diversity, and study of fossil members during their Palaeozoic rise to dominance has a long history of descriptive work. Although research interest into Palaeozoic actinopterygians has increased in recent years, broader patterns of diversity and diversity dynamics remain critically understudied.
Henderson S +3 more
europepmc +2 more sources
Functional groups in piscivorous fishes. [PDF]
Ecol Evol, 2021 We identify functional groups of piscivorous fishes based on their ability to strike at, capture, and process prey. Also, we show that these groups reflect resource partitioning in aquatic habitats. Abstract Piscivory is a key ecological function in aquatic ecosystems, mediating energy flow within trophic networks.
Mihalitsis M, Bellwood DR.
europepmc +2 more sources
Developmental constraints on fin diversity. [PDF]
Dev Growth Differ, 2020 The fish fin is a breathtaking repository full of evolutionary diversity, novelty, and convergence. However, the genetic underpinnings of their diversity and convergent evolution largely remain elusive. We summarized recent discoveries of evolutionary and developmental mechanisms of fins, shedding light on developmental constraints for fin diversity ...
Enny A +4 more
europepmc +2 more sources
Cautionary tales on the use of proxies to estimate body size and form of extinct animals. [PDF]
Ecol EvolReconstructing the body size and form of extinct animals is of vital importance to our understanding of macroevolution and palaeontology. This is often done using anatomical proxies where extinct species are known only from fragmentary remains. However, there are many limitations influencing the selection of proxy taxa that are frequently overlooked ...
Gayford JH +7 more
europepmc +2 more sources
A new Early Devonian antiarch placoderm from Belarus, and the phylogeny of Asterolepidoidei [PDF]
Acta Palaeontologica Polonica, 2023 A new asterolepidoid antiarch, Sherbonaspis talimaae sp. nov., is described based on the disarticulated skeletal elements from several boreholes in Belarus, from the Lepel Beds of the Vitebsk Formation, which has been assigned to an Early Devonian, late ...
Dmitry P. Plax, Ervins Lukševičs
doaj +1 more source
The Hunsrück Slate Konservat‐Lagerstätte
Geology Today, Volume 39, Issue 2, Page 72-76, March/April 2023., 2023 The Lower Devonian Hunsrück Slate in western Germany is world‐famous for its exceptionally preserved and beautiful fossils. What makes this Konservat‐Lagerstätte so fascinating is its unique style of pyritization that has perfectly captured an entire ecosystem, from delicate echinoderms with preserved soft tissues to the Lovecraftian Mimetaster.
Jack T. R. Wilkin
wiley +1 more source