Globorotalia mariae mariae and G. mariae gratiae; two new planktonic Foraminifera from the middle Miocene of the Mediterranean

Author(s): Salvatorini, Gianfranco; Foresi, Luca Maria; Riforgiato, Federica; Verducci, Marina
Author Affiliation(s): Primary:
Universita di Siena, Dipartimento di Scienze della Terra, Siena, Italy
Other:
Universita di Catania, Italy
Volume Title: Progress toward the definition of the Global Stratotype Section and Point of the Langhian Stage
Volume Author(s): Iaccarino, Silvia Maria, editor; Di Stefano, Agata; Turco, Elena
Source: Progress toward the definition of the Global Stratotype Section and Point of the Langhian Stage, edited by Silvia Maria Iaccarino, Agata Di Stefano and Elena Turco. Stratigraphy, 8(2-3), p.189-198. Publisher: Micropaleontology Press, New York, NY, United States. ISSN: 1547-139X
Note: In English. 35 refs.; illus., incl. 2 plates, 1 table, sketch map
Summary: Two new subspecies belonging to the genus Globorotalia, that we name G. mariae mariae and G. mariae gratiae, are here described and figured. They were found exclusively within the Middle Miocene and particularly from the early Langhian to the Serravallian of several Mediterranean sedimentary successions. The two subspecies have a slightly different stratigraphic range. Both were recorded from the Globigerinoides sicanus/Orbulina suturalis Zone (MMi4) to the Paragloborotalia partimlabiata Zone (MMi7). However, only G. mariae mariae is recorded from the Globorotalia praescitula Subzone (MMi4b), whereas G. mariae gratiae was found from slightly younger levels, corresponding to the Paragloborotalia siakensis-Praeorbulina glomerosa circularis Subzone (MMi4c). As far as their origin concerns, G. praescitula may have been the ancestor of G. mariae mariae. Subsequently, G. mariae gratiae evolved from G. mariae mariae. Both subspecies disappear in the Paragloborotalia partimlabiata-Globoturborotalita druryi Subzone (MMi7a). Concerning their stratigraphic range it is important to point out that in all the studied sections both subspecies were not found in the interval encompassing the Langhian/Serravallian boundary, and lasting from the upper part of the Praeorbulina glomerosa circularis Subzone (MMi4d) to the uppermost part of the Orbulina suturalis/Globorotalia peripheroronda Zone (MMi5).
Year of Publication: 2011
Research Program: DSDP Deep Sea Drilling Project
Key Words: 10 Paleontology, Invertebrate; 12 Stratigraphy, Historical Geology and Paleoecology; Apulia Italy; Balearic Basin; Biostratigraphy; Biozones; Cenozoic; Cretaccio Island; DSDP Site 372; Deep Sea Drilling Project; Europe; Foggia Italy; Foraminifera; Globigerinacea; Globorotalia; Globorotalia mariae; Globorotaliidae; Invertebrata; Italy; Langhian; Leg 42A; Malta; Mediterranean Sea; Microfossils; Middle Miocene; Miocene; Morphology; Neogene; New taxa; Planktonic taxa; Protista; Rotaliina; Serravallian; Southern Europe; Taxonomy; Tertiary; Tests; Tremiti Islands; West Mediterranean
Coordinates: N400152 N400154 E0044747 E0044747
N354500 N361000 E0144000 E0141000
N420700 N420700 E0153000 E0153000
Record ID: 2012062850
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