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Titolo:
REVISION OF GOURDONIA, DEVONIAN TRILOBITE FROM THE CENTRAL PYRENEES -MORPHOLOGY, EVOLUTION, ENVIRONMENT
Autore:
MORZADEC P;
Indirizzi:
UNIV RENNES 1,INST GEOL,MICROPALEONT & PALEONTOL MARINES LAB,CAMPUS BEAULIEU F-35042 RENNES FRANCE
Titolo Testata:
Geobios
fascicolo: 2, volume: 27, anno: 1994,
pagine: 243 - 253
SICI:
0016-6995(1994)27:2<243:ROGDTF>2.0.ZU;2-B
Fonte:
ISI
Lingua:
FRE
Keywords:
TRILOBITA; ASTEROPYGINAE; GOURDONIA; DEVONIAN; PYRENEES; FRANCE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
NO
Recensione:
Indirizzi per estratti:
Citazione:
P. Morzadec, "REVISION OF GOURDONIA, DEVONIAN TRILOBITE FROM THE CENTRAL PYRENEES -MORPHOLOGY, EVOLUTION, ENVIRONMENT", Geobios, 27(2), 1994, pp. 243-253

Abstract

The study of the type-material and new samples makes it possible to redefine the genus Gourdonia with his two species Gourdonia gourdoni (BARROIS) and Gourdonia destombesi STRUVE. Despite a very strong tectonic deformation of the material in the shales, thanks to the use of computer-aided shape restoration, it is possible to propose a reconstruction of these species. The genus Gourdonia probably originates in the genus Protacanthina and can be attributed to the sub-family Asteropyginae. The relative abundance of these trilobites in the North of Garin from the Cathervielle shales, Lower Eifelian, in the Central Pyrenees (France) contrasts with the rarity of this group in the pyrenean Devonian. The trilobites association, as well as the sediment and the whole fauna indicate, for this formation, an open shelf environment. These observations well agree with the transgressive event known in Europe andNorth Africa at the Lower-Middle Devonian transition.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/09/20 alle ore 22:19:21