The scleractinian coral Actinacis is an important component of reef communities from the Oligocene Lessini Shelf of Northern Italy. Actinacis occurs as massive-laminar colonies or thin to thickly branched thickets. In the present study we have used a combination od discriminant analysis and principal component analysis of corallite measurements to show that these two distinct growth forms cannot be distinguished on the basis of corallite characteristics. Thus, the two growth forms represent a single species, A.rollei, with a colony shape that varied as an autoecological response to the differeing environmental conditions that prevailed during deposition of the two facies.

Autoecological significance of growth form in the scleractinian coral Actinacis rollei Reuss (Oligocene, Lessini Mountains, Northern Italy). In Cherchi A. (ed.). Autoecology of selected fossil organisms: Achievements and Problems / Bosellini, Francesca; Stemann, T. A.. - In: BOLLETTINO DELLA SOCIETÀ PALEONTOLOGICA ITALIANA. - ISSN 0375-7633. - STAMPA. - Spec. Vol.3:(1996), pp. 31-43.

Autoecological significance of growth form in the scleractinian coral Actinacis rollei Reuss (Oligocene, Lessini Mountains, Northern Italy). In Cherchi A. (ed.). Autoecology of selected fossil organisms: Achievements and Problems.

BOSELLINI, Francesca;
1996

Abstract

The scleractinian coral Actinacis is an important component of reef communities from the Oligocene Lessini Shelf of Northern Italy. Actinacis occurs as massive-laminar colonies or thin to thickly branched thickets. In the present study we have used a combination od discriminant analysis and principal component analysis of corallite measurements to show that these two distinct growth forms cannot be distinguished on the basis of corallite characteristics. Thus, the two growth forms represent a single species, A.rollei, with a colony shape that varied as an autoecological response to the differeing environmental conditions that prevailed during deposition of the two facies.
1996
Spec. Vol.3
31
43
Autoecological significance of growth form in the scleractinian coral Actinacis rollei Reuss (Oligocene, Lessini Mountains, Northern Italy). In Cherchi A. (ed.). Autoecology of selected fossil organisms: Achievements and Problems / Bosellini, Francesca; Stemann, T. A.. - In: BOLLETTINO DELLA SOCIETÀ PALEONTOLOGICA ITALIANA. - ISSN 0375-7633. - STAMPA. - Spec. Vol.3:(1996), pp. 31-43.
Bosellini, Francesca; Stemann, T. A.
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