About This Item

Share This Item

The AAPG/Datapages Combined Publications Database

CSPG Special Publications

Abstract


Intl. Symposium of the Devonian system: Papers, Volume II, 1967
Pages 493-495
Biostratigraphy

Graptolite occurrences in the Borschov horizon of Podolia

T. N. Koren

Abstract

During recent studies of the Borschov horizon in Podolia, three dimensional and flat rhabdosomes of the Monograptus angustidens Pribyl-Monograptus uniformis Pribyl phylogenetic lineage were found.

The lower boundary of the zone of Monograptus uniformis s.l. coincides with the base of the Borschov horizon (bottom of the Taina beds). The top of the horizon is tentatively drawn 160 m. above the base on the basis of M. ex. gr. uniformis.

Study of the Podolian graptolites indicates that the phylogenetic lineage M. angustidens - M. uniformis cannot be subdivided and hence two separate zones cannot be established. The Silurian-Devonian boundary in Podolia may therefore be drawn at the base or at the top of the Taina beds.


Pay-Per-View Purchase Options

The article is available through a document delivery service. Explain these Purchase Options.

Watermarked PDF Document: $14
Open PDF Document: $24