Original paper
Falcitornoceras and Cheiloceras (Ammonoidea, Goniatitida) from the lower Famennian of the Iberian Peninsula and their biostratigraphic applications
Román Montesinos, J.; Sanz-López, Javier
published: 1/1/1999
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ArtNo.: ESP026003703003
Abstract
An account and new data are given on the distribution of early Falcitornoceras and Cheiloceras above the base of the Famennian in some sections of the Iberian Peninsula. The stratigraphic distributions of the species of these genera are compared with those reported from some condensed Moroccan and French sections of reference. New and published data make evident some difficulties concerning to the strict correlation and conceptual definition of the lowermost Famennian ammonoid zones of Phoenixites frechi and Cheiloceras verneuili. Finally, a new definition of the Falcitornoceras falciculum Zone is proposed.