1,721,091 research outputs found
The bathyal otolith associations from Montalbano Ionico section (Lower Pleistocene, Southern Italy)
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The use of fish otoliths for paleobathymetric evaluation of the Lower to Middle Pleistocene deposits in Southern Italy
No full textAspetti paleobiogeografici della fauna a teleostei (otoliti) del Pleistocene del Mediterraneo
No full textResponse of otolith assemblages to sea-level fluctuations at the Lower Pleistocene Montalbano Jonico Section (southern Italy)
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Nuovi dati sulla fauna a teleostei (otoliti) del Pliocene del Mediterraneo: la sezione di Rio Merli (Romagna)
No full textThe Pleistocene bathyal teleostean fauna of Archi (Southern Italy): palaeoecological and palaeobiogeographic implications
Full text linkThe early-middle Pleistocene teleostean fauna of the Archi section, cropping out along the Calabrian side of the Messina Straits was studied. The integrated approach, based on the palaeobathymetric method coupled with the palaeoecological approach, already used on deep circalittoral and epibathyal assemblages, was applied for the palaeoenvironmental reconstruction. The otolith benthic and benthopelagic associations, strongly bathyal in their composition, suggest a deep bathyal palaeoenvironment, 500 to 1000 m deep, which is in agreement with the invertebrate benthic faunas. Compositional, structural, and taxonomical features of the teleostean assemblages indicate clearly Atlantic or more generally oceanic affinities. The Archi teleostean fauna indicates a palaeoceanographic pattern with deep-water and near-bottom temperature lower than 8-10°C, quite different from the Recent Mediterranean
Early Oligocene fish otoliths from the Castellane area (SE France) and an overview of Mediterranean teleost faunas at the Eocene-Oligocene boundary
No full textThe study of Oligocene fish otoliths from the blue marls in the Castellane area allowed the reconstruction of a teleost fauna of 38 taxa of which 16 could be identified at species level. This is the first otolith-based neritic fish fauna known from the Mediterranean Early Oligocene. Additional data for Early Oligocene otolith-based fish faunas of the paleo-Mediterranean Basin are available only from the Liguro-Piemontese Basin, northern Italy, where the associations are dominated by deepwater fishes. Combining the data from both Mediterranean paleoenvironments, one obtains a list of 88 taxa of which 48 could be identified to species level. This is the only available overview on the composition of the otolith-based fish fauna in the Mediterranean realm during the Early Oligocene. It is shown that already in the Oligocene, the neritic fauna shows good affinities with the present-day Mediterranean one, while the deepwater fauna was a circumglobal oceanic one, strongly different from the Recent Mediterranean deepwater fauna. The Early Oligocene and Late Eocene Mediterranean otolith-based teleost faunas are compared to each other and to contemporaneous faunas from the Aquitaine Basin. This provides evidence for a very strong faunal break in both basins, both in the neritic and the mesopelagic fauna, and this faunal turnover is interpreted as a response to the paleoceanographic and climatic changes (cooling) that took place at the Late Eocene-Early Oligocene at global scale. Finally, the results indicate the great homogeneity of the Eastern Atlantic and Mediterranean faunas during the late Eocene. Notwithstanding the strong faunal turnover at the Eocene-Oligocene boundary, the new Oligocene fauna also exhibits a similar homogeneity over a large geographic area which, for this time unit, can be extended to the Paratethys
Fish otoliths from the Middle Pleistocene deposits of Montalbano Jonico (Southern Italy)
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