Results 81 to 90 of about 3,102 (219)

Recent developments in the Upper Ordovician and lower Silurian conodont biostratigraphy in Estonia [PDF]

open access: yesEstonian Journal of Earth Sciences, 2007
The current state of and the latest developments in the conodont-based biostratigraphical studies of Upper Ordovician and lower Silurian strata in Estonia are discussed.
Männik, Peep
doaj  

Early permian phase of morphogenesis of conodonts: comparative historial analysis

open access: yes, 1992
Purpose of the work: study of the morphology of the Early Permian conodonts, their revision, determination of the phases of their historical development and specification of the zonal scheme. Full phylogenetic schemes are given for the first time for the
Reimers Alexey Nikolaevich
core  

CONODONTS [PDF]

open access: yesPalaeogeography, Palaeoclimatology, Palaeoecology, 1965
  +4 more sources

Polytaxonomic and monotaxonomic zonal biochronological scales in biostratigraphy

open access: yesЛитосфера, 2016
The method of increasing the correlation potential of zonal biochronological scales by creating the polytaxonomic complex characteristic of zone subdivisions is proposed. For this operation is necessary the normative zonal scale, by which biozones of the
V. V. Chernykh, N. A. Kucheva
doaj  

Conodonts from the Marathon basin, Brewster County, Texas

open access: yes, 1941
Conodonts were discovered in the limestones of the Marathon region in the Big Bend country, Brewster County, Texas, as a result of field work during the summer of 1939.
Graves, Roy William, Jr.
core  

Ordovician conodonts from the Bulltinden Formation, Motalafjella, central-western Spitsbergen

open access: yes, 1986
Seven samplcs from the Limcstonc and Boulder Conglomerate Members of the Bulltinden Formation have yicldcd poorly prcscrvcd conodonts. On tentative identifications Periodon aculeatus Hadding and Prioniodus cf. P.
Armstrong, Howard A.   +2 more
core   +1 more source

Mississippian Conodonts in Iowa

open access: yes, 1973
The literature on Mississippian conodonts in Iowa is reviewed. Conodont occurrences are noted from the McCraney, Prospect Hill, Hampton, Gilmore City, Burlington, Keokuk, War-saw, Spergen, St. Louis and Ste. Genevieve formations.
Anderson, W. I.
core  

Lower Silurian biostratigraphy of the Viirelaid core, western Estonia [PDF]

open access: yesEstonian Journal of Earth Sciences, 2007
The distribution of five groups of fossils in the upper Llandovery (Telychian) and Wenlock of the Viirelaid core section, Estonia, is presented and discussed in terms of their biozones (conodonts and chitinozoans) and mutual positions (scolecodonts ...
Nestor, Viiu   +6 more
doaj  

Conodonts, correlation and stratigraphy of the Plymouth limestones

open access: yes, 1975
This work embraces the study of the conodonts and the environments of the Plymouth Limestones (Devonian, South Devon).Widespread sampling of calcareous strata in the Plymouth area has produced conodonts indicative of high Emsian to mid-Famennian levels ...
Orchard, Michael James
core   +1 more source

The Middle Carboniferous Boundary in the North of Pay-Khoy – Correlation between the Shallow- and Deep-Water Sequences [PDF]

open access: yesУчёные записки Казанского университета: Серия Естественные науки, 2017
The paper considers the Lower-Middle Carboniferous boundary interval in the sections of the Pay-Khoy carbonate parautochthone (shallow-water facies) and the Kara slate allochthone (deep-water facies) with respect to the boundary tracing criteria.
A.V. Zhuravlev, Ya.A. Vevel
doaj  

Home - About - Disclaimer - Privacy