We report the occurrence of a new agglutinated foraminiferal species belonging to the genus Colominella Popescu, 1998, recently recorded in two Pliocene successions of the western Mediterranean region. The genus Colominella Popescu, 1998 has been formally described from the Paratethyan Badenian (middle Miocene) Kostej succession, outcropping in Transylvania (Popescu et al. 1998; Kaminski, 2004) and is based on the type species Textulariella paalzowi, first studied by Cushman (1936) from the same locality. The type species has been subsequently recorded in other Badenian localities in central-eastern Europe (e.g., Popescu et al., 1998; Spezzaferri et al., 2004) but never in the Mediterranean basin. In 2012, Mancin and co-authors documented the occurrence of Colominella specimens in a lower Pliocene record of the Albenga Basin in the western Mediterranean region and, more recently, also in the Piacenzian stratotype section of Castell’Arquato (PC), in the Northern Apennine. The direct comparison between the Mediterranean specimens and the topotype individuals of C. paalzowi from the lower Badenian Paratethyan Lăpugiu de Sus section shows that the Pliocene Mediterranean specimens are different from a taxonomic point of view (Mancin & Kaminski, in press), and therefore they cannot be assigned to the type species C. paalzowi (Cushman). The Pliocene Mediterranean specimens represent a new, younger, more highly evolved Colominella species, that will be formally described in the conference proceedings.
A new Pliocene species of the agglutinated foraminifer Colominella Popescu, 1998 from the Mediterranean record
MANCIN, NICOLETTA;
2017-01-01
Abstract
We report the occurrence of a new agglutinated foraminiferal species belonging to the genus Colominella Popescu, 1998, recently recorded in two Pliocene successions of the western Mediterranean region. The genus Colominella Popescu, 1998 has been formally described from the Paratethyan Badenian (middle Miocene) Kostej succession, outcropping in Transylvania (Popescu et al. 1998; Kaminski, 2004) and is based on the type species Textulariella paalzowi, first studied by Cushman (1936) from the same locality. The type species has been subsequently recorded in other Badenian localities in central-eastern Europe (e.g., Popescu et al., 1998; Spezzaferri et al., 2004) but never in the Mediterranean basin. In 2012, Mancin and co-authors documented the occurrence of Colominella specimens in a lower Pliocene record of the Albenga Basin in the western Mediterranean region and, more recently, also in the Piacenzian stratotype section of Castell’Arquato (PC), in the Northern Apennine. The direct comparison between the Mediterranean specimens and the topotype individuals of C. paalzowi from the lower Badenian Paratethyan Lăpugiu de Sus section shows that the Pliocene Mediterranean specimens are different from a taxonomic point of view (Mancin & Kaminski, in press), and therefore they cannot be assigned to the type species C. paalzowi (Cushman). The Pliocene Mediterranean specimens represent a new, younger, more highly evolved Colominella species, that will be formally described in the conference proceedings.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
