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BIBTEX RIS

THE ORDOVICIAN CLITAMBONITIDINE BRACHIOPOD GENUS VELLAMO IN ESTONIA

1998; Estonian Academy Publishers; Volume: 47; Issue: 3 Linguagem: Inglês

10.3176/geol.1998.3.05

ISSN

1736-7913

Autores

O Tinn,

Tópico(s)

Marine and environmental studies

Resumo

Vellamo Opik, 1930 is a cosmopolitan Ordovician brachiopod genus originating from the epicontinental seas of the Baltoscandian Palaeobasin.As a result of the systematic revision of the Estonian material, 16 Vellamo species are described or discussed.The morphological characters of taxa are presented.Special attention is paid to the ontogenetical changes in the shell morphology, as the earliest growth stages are closely similar in all species of the genus.On the basis of the stratigraphical distribution three successive stages in the development of the Estonian species are distinguished.

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