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A Proposal for Taxonomic Re-Evaluation of Vaccinites Species from the Santonian Limestones of Southern Istria (Croatia)

A. Moro
V. Ćosović

Sažetak

Rudists, especially members of the family Hippuritidae, were common dwellers on the Adriatic Carbonate Platform during the Late Cretaceous. Morphological elements (ligamental ridge, teeth, pillars, length of the contour around the inner margin of the outer shell layer and the ratio between this length and the distance between the sutures of the pillars) from the transverse shell sections permit different species to be defined within the family. Transverse sections of Vaccinites specimens from the Santonian limestones in southern Istria show different values of the angle between the teeth and the ligament ridge, between the ligamental ridge and the E pillar (P2), and of the ratio between the length of the contour and the pillar suture distance. Cluster analyses (Ward’s and Unweighted pair–group average methods) using measured elements, allowed the definition of three species groups from seventeen species at the beginning of study.

Ključne riječi

Vaccinites; Taxonomy; Cluster analysis; Santonian; Adriatic Carbonate Platform; Istria; Cro­atia

Hrčak ID:

3672

URI

https://hrcak.srce.hr/3672

Datum izdavanja:

30.12.2004.

Posjeta: 1.396 *