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Otolithes de myctophidés (poissons téléostéens) des terrains tertiaires d'Europe: révision des genres Benthosema, Hygophum, Lampadena, Notoscopelus et Symbolophorus
Brzobohaty, R.; Nolf, D. (1996). Otolithes de myctophidés (poissons téléostéens) des terrains tertiaires d'Europe: révision des genres Benthosema, Hygophum, Lampadena, Notoscopelus et Symbolophorus. Bull. Kon. Belg. Inst. Natuurwet. Aardwet. = Bull. - Inst. r. sci. nat. Belg., Sci. Terre 66: 151-176
In: Bulletin van het Koninklijk Belgisch Instituut voor Natuurwetenschappen. Aardwetenschappen = Bulletin de l'Institut Royal des Sciences Naturelles de Belgique. Sciences de la Terre. KBIN: Brussel. ISSN 0374-6291, meer
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| Trefwoorden |
Geological time > Phanerozoic > Geological time > Cenozoic > Tertiary > Cenozoic > Neogene > Miocene
Geological time > Phanerozoic > Geological time > Cenozoic > Tertiary > Cenozoic > Neogene > Pliocene
Otoliths
Myctophidae Gill, 1893 [WoRMS]; Teleostei [WoRMS]
Europe, Europe [Marine Regions]
Marien/Kust |
| Author keywords |
Myctophids, "non-Diaphus", Neogene, Mediterranean, Europe |
| Auteurs | | Top |
- Brzobohaty, R.
- Nolf, D., meer
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| Abstract |
Twenty-nine species of "non-Diaphus" myctophids are recorded from the Tertiary (mainly Neogene) strata of Europe. One among them, Lampadena speculigeroides is new, and two species previously considered as doubtful, are revalidated: Lampadena gracile (SCHUBERT, 1912) and Notoscopelus mediterraneus (KOKEN, 1891). The bulk of our data concerns the Mediterranean realm (including the Paratethys). The history of myctophid populations in that basin can be summarised as follows. From Priabonian till Burdigalian, rich myctophid associations, dominated by the genus Diaphus were already represented. This genus continues to dominate the associations up to the Piacenzian. In the Burdigalian. nine "non-Diaphus" species appear, and two of them persist in the present day Mediterranean fauna. Nine species are recorded from the Langhian and four of those appeared after the Burdigalian. There are no data for the Serravallian. In the Tortonian, 11 species are known. Five among them already existed in the Langian, one does not exceed the upper boundary of the Tortonian, two persist till the Pliocene, and three persist till present. For the Messinian, otoliths are known only from skeletons with otoliths in situ (six genera, including Diaphus), and preservation quality of these otoliths is poor. Although, precise relationships between otolith-based and skeleton-based species are difficult to evaluate, the Messinian skeletons do not include any myctophic genus that is not known by otoliths from the Tortonian or the Pliocene. The Zanclian association counts 12 species of which six already existed in the Tortonian. Among the six new ones, five are Recent, but only two of them live in the present day Mediterranean. All taxa who in the present day fauna are known only from outside the Mediterranean, disappeared from that basin since the end of the Zanclian. It seems that till that time, more oceanic conditions that the present-day ones prevailed in the Mediterranean. Notwithstanding the appearence of some new species at the end of the Piacenzian, it seems almost certain that the climatic deterioration and the isolation of the Mediterranean have been much more destructive for the Palaeomediterranean fauna than the Messinian salinity crisis. |
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