engleski

Mid-Cretaceous diversity of dasycadalean algae, southern Croatia

The mid-Cretaceous shallow-marine platform-interior deposits of southern Croatia are dominated by dasycladalean algae and benthic foraminifera. These deposits have been intensively biostratigraphically studied and major effort of micropaleontologists has been directed toward a description of the pattern of distribution of these two groups of microorganisms, not toward understanding of where and how they lived. The present study discusses the stratigraphical position and taxon richness of the main genera and species of dasycladalean algae within the Berriasian-Early Cenomanian interval. Several species of dasycladalean algae are of great value to the mid-Cretaceosu biostratigraphy of the Adriatic platform in southern Croatia. These species have restricted stratigraphical ranges, evolving rapidly and becoming extinct suddenly. They are also abundant and have a widespread distribution. These include: Salpingoporella melitae RADOIČIĆ and S. muehlbergii (LORENZ) (Barremian), and Salpingoporella turgida (RADOIČIĆ) and Cylindroporella taurica CONRAD & VAROL (Upper Albian).

Cretaceaous; dasycladales; Croatia

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