Results 31 to 40 of about 4,839,080 (222)
Литосфера, 2020 Research subject. A section of the Upper Lochkovian (Lower Devonian) Valgan Formation located in the stratotypic area on the Ilych River, Northern Urals, was investigated.Materials and methods.
E. S. Ponomarenko
doaj +1 more source
Известия Томского политехнического университета: Инжиниринг георесурсов, 2020 Relevance of the research. Today, among the global priorities is the development of a standard conodont scale for the Lohkkovian and Pragien stages of the Lower Devonian. In accordance with this, the study of regularity of conodonts distribution in Lower
Tatyana M. Mavrinskaya +1 more
doaj +1 more source
A plant-root system in the Lower Devonian of the Holy Cross Mountains, Poland [PDF]
Estonian Journal of Earth Sciences, 2015 The depositional environment of the Lower Devonian of the Holy Cross Mountains has only been studied and interpreted in part, particularly for the lower portion of the profile.
Piotr Szrek +2 more
doaj +1 more source
Running across the Silurian/Devonian Boundary along Northern Gondwana: A Conodont Perspective
Geosciences, 2022 The Global Stratotype Section and Point (GSSP) of the Silurian/Devonian boundary, Lower Devonian Series and Lochkovian Stage was formally placed in 1977 at Klonk, in the Czech Republic, at the first appearance of the graptolite Uncinatograptus uniformis ...
Annalisa Ferretti +3 more
doaj +1 more source
The 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
Middle to upper Devonian (givetian and frasnian) shallow-water carbonates of Western Europe: fades analysis and cyclicity [PDF]
, 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
Rivista Italiana di Paleontologia e Stratigrafia, 2008 The present paper presents descriptions of 10 bryozoan species from material deposited at the Geological Centrum Göttingen, Germany. The studied material comes from the Lower Devonian rocks (Konĕprusy Limestone, Pragian), exposed in a quarry near Zlatý ...
ANDREJ ERNST
doaj +1 more source
The Anatomical Record, EarlyView.Abstract Sharks possess varied diets and different prey capture mechanisms. As a result, the group exhibits a significant diversity in dental morphology, also reflecting the internal structures of the teeth. Internal dental anatomy points to the existence of three histotypes in elasmobranch phylogeny: orthodont, osteodont, and pseudoosteodont ...
Kelly Roberta da Silva +2 more
wiley +1 more source
Developmental Dynamics, EarlyView.Abstract Background The dentigerous jawbones of a 423‐million‐year‐old stem chondrichthyan (ischnacanthid acanthodian) carry a characteristic combination of multi‐row non‐shedding white teeth with brownish overgrowing denticles. The color distinction makes it a good model for observing the interaction between two odontode lineages, but the nature of ...
Jia‐Cih Kang +3 more
wiley +1 more source
A Sphenopsid from the Lower Devonian of Wyoming
Botanical Museum leaflets, Harvard University, 1938 (Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Schultes, Richard Evans, Dorf, Erling
openaire +3 more sources