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Bianucci, Giovanni; Carone, Giuseppe; Domning, Daryl Paul; Landini, Walter; Rook, Lorenzo; Sorbi, Silvia
(detail)
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2008 |
Peri-Messinian dwarfing in Mediterranean Metaxytherium (Mammalia: Sirenia): evidence of habitat degradation related to the Messinian Salinity Crisis. In: N.T. Boaz, A. El-Arnauti, P. Pavlakis, & M.J. Salem (eds.), Circum-Mediterranean geology and biotic evolution during the Neogene Period: the perspective from Libya.
Garyounis Scientific Bull., Special Issue 5: 145-157. 4 tabs. 1 fig.
–Summ.: [G. Carone], Bol. Gruppo Paleontologico Tropeano 10: 3-5, 5 figs., Dec. 2004.
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Marra, Antonella Cinzia; Carone, Giuseppe; Agnini, Claudia; Ghinassi, Massimiliano; Oms, Oriol; Rook, Lorenzo
(detail)
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2017 |
Stratigraphic and chronologic framework of the Upper Miocene Cessaniti succession (Vibo Valentia, Calabria, Italy).
Riv. Ital. Paleontol. Strat. 123(3): 379-393. 7 figs. Nov. 2017.
–ABSTRACT: This study revises the mammal-bearing stratigraphic succession of Cava Gentile, near Cessaniti (Calabria, southern Italy), with the aim of dating the Late Miocene fossiliferous succession by the integration of mammal biochronology with sedimentology, magnetostratigraphy and marine biostratigraphy. Since the first discovery of mammal remains at Cessaniti, the chronological framework of the sedimentary succession was based on the biochronological significance of the mammal assemblage and on the biostratigraphic characterisation of the capping unit. Chronological control of the sedimentary succession and the age range of the mammal faunal assemblage at Cessaniti is now possible by combining the mammal biochronological constraints with biostratigraphy and the characterisation of the magnetostratigraphy of the sedimentary succession. Our study allows the conclusion that: i) an overall transgressive trend is recorded at the late Tortonian succession of the Capo Vaticano area, with locally different depositional trends; ii) the late Tortonian transgression was punctuated by minor episodes of forced regression, as attested by soils and fluvial deposits intercalated within the Cava Gentile succession (documented here for the first time); iii) the relative sea level rises that characterised these sedimentation patterns allowed accumulation of marine and terrestrial fossils in specific transgressive horizons; iv) the combination of palaeomagnetic data and biostratigraphic analyses, together with the biochronological constraints offered by the Cessaniti mammal assemblage, allows the assignment of the basal unit of the Cessaniti (Cava Gentile) succession to the normal Chron C4n (8.1–7.5 Ma); and v) the maximum range of the Cessaniti land mammal assemblage from Cava Gentile is about 1 Ma, bracketed between 8.1 and 7.2 Ma.
Metaxytherium serresii, 387-388, 390; M. medium, 387, 390.
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Pandolfi, Luca; Collareta, Alberto; Bianucci, Giovanni; Contessi, Michela; Rook, Lorenzo; Sorbi, Silvia
(detail)
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2022 |
A large tusk of Metaxytherium (Dugongidae, Sirenia, Mammalia) from the Late Miocene of Montebamboli (southern Tuscany, Italy): evolutionary and paleoecological implications.
Bollettino della Società Paleontologica Italiana 61(2): 159-166. 4 figs.
–ABSTRACT - An isolated large tusk, belonging to the historical finds of the Collezione di Geologia "Museo Giovanni Capellini" (Bologna, Italy) and originally identified as belonging to a hippopotamus, is here described and reassigned to the genus Metaxytherium (Dugongidae, Sirenia, Mammalia). According to the museum label, this specimen originates from the now-exhausted lignite deposits of Montebamboli (Tuscany, central Italy); the latter are late Tortonian to early Messinian in age and were deposited in a lacustrine environment. The Montebamboli tusk displays strong similarities with an elderly Metaxytherium subapenninum specimen from the Pliocene deposits of Bra (Piedmont, northern Italy) as well as with an isolated Metaxytherium tusk, now apparently lost, from Miocene deposits of Son Morelló (Mallorca, Spain). The Late Miocene occurrence of a large-tusked Metaxytherium in the Mediterranean Basin calls into question the anagenetic trend previously proposed for the Euro-North African species of Metaxytherium, thus also stimulating further research on the intra- and interspecific tusk size variability within this lineage. Furthermore, this specimen represents the first record of a marine species from the lignites of Montebamboli, indicating the proximity of marine settings.
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Bibliography and Index of the Sirenia and Desmostylia 