THE FIRST CENOZOIC OCTOPOD: A LOWER EOCENE RECORD FROM BOLCA, NORTHEASTERN ITALY

被引:0
|
作者
Mironenko, Aleksandr [1 ]
Giusberti, Luca [2 ]
Serafini, Giovanni [3 ]
Zorzin, Roberto [4 ]
Bannikov, Alexandre f. [5 ]
机构
[1] Russian Acad Sci, Geol Inst, Pyzhevski Lane 7, Moscow 119017, Russia
[2] Dept Geosci, Via G Gradenigo 6, I-35131 Padua, Italy
[3] Univ Modena & Reggio Emilia, Dipartimento Sci Chim & Geolog, Via Campi 103, I-41125 Modena, Italy
[4] Museo Civico Storia Nat Verona, Lungadige Porta Vittoria 9, I-37129 Verona, Italy
[5] Russian Acad Sci, Borissiak Paleontol Inst, Profsoyuznaya 123, Moscow 117647, Russia
关键词
Cephalopoda; Coleoidea; Octopoda; Taxonomy; Paleogene; Bolca Konservat-Lagerst & auml; tte; PREDATION; LAGERSTATTE; PESCIARA;
D O I
10.54103/2039-4942/23207
中图分类号
P5 [地质学];
学科分类号
0709 ; 081803 ;
摘要
to date, soft-tissue remains of extinct incirrate octopods have been described exclusively from Up-per Cretaceous deposits. Here, three specimens of an incirrate octopodid with well-preserved soft tissue imprints are described for the first time from Paleogene strata. This material originates from the upper Ypresian (lower Eocene) fish-bearing levels of the Bolca Konservat-Lagerst & auml;tte in the Pesciara of Bolca in north-eastern Italy. Previously, these specimens had tentatively been interpreted as teuthids. Based on a detailed study of their anatomical structure, a new genus and species of octopodid, Bolcaoctopus pesciaraensis, belonging to the extant family Octopodidae, are here erected. Bolcaoctopus gen. nov. may be distinguished from the Late Cretaceous genus Styletoctopus by the presence of long and thin arms and an elongated body shape with a narrowed apical end and covered by longitudinal wrinkles. Although fin-ds of fossil octopuses in the Bolca Konservat-Lagerst & auml;tte remain extremely rare, it is worth noting that Cenozoic marine vertebrate localities constitute an important potential source of additional finds of coleoid cephalopods, the study of which may shed light on a poorly understood period in the evolutionary history of these molluscs
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页码:603 / 612
页数:10
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