THE EOCRINOID ASCOCYSTITES-BARRANDE (ECHINODERMATA, BLASTOZOA) FROM THE MIDDLE ORDOVICIAN OF CENTRAL PORTUGAL, WITH COMMENTS ON THE STRATIGRAPHY OF THE BREJO-FUNDEIRO FORMATION

Authors
YOUNG TP DONOVAN SK
Citation
Tp. Young et Sk. Donovan, THE EOCRINOID ASCOCYSTITES-BARRANDE (ECHINODERMATA, BLASTOZOA) FROM THE MIDDLE ORDOVICIAN OF CENTRAL PORTUGAL, WITH COMMENTS ON THE STRATIGRAPHY OF THE BREJO-FUNDEIRO FORMATION, Atlantic geology, 29(2), 1993, pp. 149-154
Citations number
NO
Categorie Soggetti
Geology
Journal title
Atlantic geology → ACNP
ISSN journal
08435561
Volume
29
Issue
2
Year of publication
1993
Pages
149 - 154
Database
ISI
SICI code
0843-5561(1993)29:2<149:TEA(BF>2.0.ZU;2-T
Abstract
The eocrinoid Ascocystites is recorded from the Middle Ordovician (Low er Llanvirn) Brejo Fundeiro Formation of the Dornes region, central Po rtugal. The Brejo Fundeiro Formation is a sequence of mudrocks overlyi ng the ''Armorican Quartzite'' (Lower Ordovician, Arenig). Ascocystite s was found in a decalcified concretion from a horizon close to the ba se of the formation. This genus has previously been recorded only from the Middle Ordovician of Bohemia and the Armorican Massif. All occurr ences lie within the Gondwanan West European Platform.