Yngve Grahn - Concepedia

Author

Yngve Grahn

Universidade do Estado do Rio de Janeiro

Also Known As

Grahn, Yngve, Jaak Nõlvak, Y Grahn, Y. GRAHN, Y. Grahn, YNGVE GRAHN, Yngve Grahn

Publications

2.8K

Citations

H-Index

Concepts

All Affiliations

Universidade do Estado do Rio de Janeiro Stockholm University Swedish Museum of Natural History Universidade Estadual de Ponta Grossa Petrobras (Brazil)

About

Yngve Grahn is an author at Universidade do Estado do Rio de Janeiro specializing in earth science, evolutionary biology, and biogeography.

Top Concepts

#	Concept	H-Index	Publications	Citations
1	Engineering	17	20	969
2	Social Sciences	15	15	504
3	Natural Sciences	9	9	368
4	Medicine	2	2	30
5	Language Studies	1	1	52

Yngve Grahn

Publications

2.5K

Citations

H-Index

Page 1

	Year	Citations
Ordovician chitinozoan zones from Baltoscandia Jaak Nõlvak, Yngve Grahn Review of Palaeobotany and Palynology BiologyOomyceteOrdovician Chitinozoan Zones	1993	178
Early Silurian glaciations in Brazil Yngve Grahn, Mário V. Caputo Palaeogeography Palaeoclimatology Palaeoecology Early Silurian GlaciationsPalaeo-environmental Reconstruction	1992	158
A revised chitinozoan classification Florentin Paris, Yngve Grahn, Viiu Nestor, Journal of Paleontology BiologyPhylogeneticsNatural SciencesEvolutionary BiologyChitinozoan Genera	1999	155
Early Silurian glaciation along the western margin of Gondwana (Peru, Bolivia and northern Argentina): Palaeogeographic and geodynamic setting Enrique Dı́az-Martı́nez, Yngve Grahn Palaeogeography Palaeoclimatology Palaeoecology EngineeringWestern MarginGeographyEarly Silurian GlaciationGeology	2006	133
Palynology and sequence stratigraphy of three Devonian rock units in the Apucarana Sub-basin (Paraná Basin, south Brazil): Additional data and correlation Yngve Grahn, Paula Mendlowicz Mauller, Sérgio Bergamaschi, Review of Palaeobotany and Palynology EngineeringApucarana Sub-basinGeographySedimentary GeologyGeology	2011	97
Revision of silurian and devonian strata of Brazil Yngve Grahn Palynology EngineeringPrecambrian GeologyGeographyGeologyDevonian Stratigraphy	1992	97
A proposed global boundary stratotype for the base of the Upper Series of the Ordovician System: The Fågelsång section, Scania, southern Sweden Stig M. Bergström, Stanley C. Finney, Xu Chen, Episodes	2000	94
Precise chitinozoan dating of Ordovician impact events in Baltoscandia Yngve Grahn, Jaak Nõlvak, Florentin Paris Journal of Micropalaeontology Chitinozoan BiostratigraphyEngineeringBiogeographyLagenochitina SpGeology	1996	80
The first recorded decline of the Malvinokaffric Devonian fauna in the Paraná Basin (southern Brazil) and its cause; taphonomic and fossil evidences Elvio Pinto Bosetti, Yngve Grahn, Rodrigo Scalise Horodyski, Journal of South American Earth Sciences Evolutionary BiologyMalvinokaffric Devonian FaunaTaphonomyBiostratigraphyFirst Recorded Decline	2012	69
Palynostratigraphy of the Chapada Group and its significance in the Devonian stratigraphy of the Paraná Basin, south Brazil Yngve Grahn, Paula Mendlowicz Mauller, Egberto Pereira, Journal of South American Earth Sciences Chapada GroupEngineeringGeographyGeologyDevonian Stratigraphy	2009	63

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