The comelicaniid brachiopods, typical fossils of the Upper Permian, have been considered the markers for the Lower Dorashamian. They show a wide geographical distribution, that is from the Southern Alps (Italy) to Himalayan region - Dolomites and Carnia (Italy), Central Slovenia (Yugoslavia), Bükk Mts. and Transdanubian Central Range (Hungary), Transcaucasia (USSR Armenia and North Iran) and Spiti (Himalayas, India). From stratigraphical researches carried out on the P/T boundary from the Southern Alps and Hungary, it has been found that the comelicaniid range is not restricted, as formerly supposed, to the Lower Dorashamian. The brachiopods span from Dzhulfian in the Bükk. Mts, Lower Dorashamian in Transcaucasia, to a more lilcely Upper Dorashamian in the Southern Alps and Transdanubian Central Range. In these latter two localities a characteristic Comelicama assemblage (C megalotis group and C ladina group) occurs very close to the P/T boundary from sections in which the formational ...
Chronological and geographical distribution of the Fam. Comelicaniidae Merla, 1930 (Brachiopoda)
POSENATO, Renato
1989
Abstract
The comelicaniid brachiopods, typical fossils of the Upper Permian, have been considered the markers for the Lower Dorashamian. They show a wide geographical distribution, that is from the Southern Alps (Italy) to Himalayan region - Dolomites and Carnia (Italy), Central Slovenia (Yugoslavia), Bükk Mts. and Transdanubian Central Range (Hungary), Transcaucasia (USSR Armenia and North Iran) and Spiti (Himalayas, India). From stratigraphical researches carried out on the P/T boundary from the Southern Alps and Hungary, it has been found that the comelicaniid range is not restricted, as formerly supposed, to the Lower Dorashamian. The brachiopods span from Dzhulfian in the Bükk. Mts, Lower Dorashamian in Transcaucasia, to a more lilcely Upper Dorashamian in the Southern Alps and Transdanubian Central Range. In these latter two localities a characteristic Comelicama assemblage (C megalotis group and C ladina group) occurs very close to the P/T boundary from sections in which the formational ...I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
