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A remarkable clupeomorph fish (Pisces, Teleostei) from a new Upper Cretaceous marine locality in Lebanon

Ein bemerkenswerter clupeomorpher Fisch (Pisces, Teleostei) von einer neuen Oberkreide-Lokalität in Libanon

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Abstract

A new clupeomorph fish,Sorbinichthys elusivo n. g., n. sp. is described from a new Upper Cretaceous (Middle ? Cenomanian) marine locality at Nammoura (Lebanon). The characteristic features of the new genus, such as dorsally expanded posttemporal, subrhomboid spiny dorsal scutes, a very wide and deep gap between second and third hypurals, second ray of dorsal and pectoral fins greatly elongated and filamentous, and anterior procurrent caudal fin rays deeply extended between vertebral spines are unusual for clupeomorphs and warrant the establishment of the new family Sorbinichthyidae. The new fish displays several clupeomorph and clupeiform characters, but its placement within the clupeiforms is problematic. The new family is referred to the Clupeomorpha incertae ordinis.

Kurzfassung

Ein neuer clupeomorpher Fisch,Sorbinichthys elusivo n. g., n. sp. wird beschrieben. Er stammt von einer ebenfalls neuen Lokalität, Nammoura, die in die marine Oberkreide (? Mittleres Cenomanium) des Libanons eingestuft wird. Die neue Gattung zeichnet sich durch eine Reihe von Merkmalen aus, die für clupeomorphe Fische außergewöhnlich sind: ein dorsal ausgedehntes Posttemporale, subrhomboide, ctenoide dorsale Schildschuppen („scutes“), einen sehr breiten und tiefen Einschnitt zwischen dem zweiten und dritten Hypurale, einen stark verlängerten und filamentösen zweiten Flossenstrahl in der Dorsalis und Pectoralis, sowie vordere Schwanzflossen-Randstrahlen, die tief zwischen die Processus spinosi der Wirbelkörper ragen. Daher wird es für sinnvoll erachtet eine neue Familie, Sorbinichthyidae, zu begründen. Die neue Gattung zeigt verschiedene Merkmale der Clupeomorpha und Clupeiformes. Eine Eingliederung in die Clupeiformes erscheint daher problematisch, und die neue Familie wird als Clupeomorpha incertae ordinis eingestuft.

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Authors and Affiliations

  1. Paleontological Institute of the Russian Academy of Sciences, Profsoyuznaya 123, 117647, Moscow, Russia

    Alexandre F. Bannikov

  2. Stoneage s.r.l., Via Torino 15, I-34123, Trieste, Italy

    Flavio Bacchia

Authors
  1. Alexandre F. Bannikov
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  2. Flavio Bacchia
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Bannikov, A.F., Bacchia, F. A remarkable clupeomorph fish (Pisces, Teleostei) from a new Upper Cretaceous marine locality in Lebanon. Senckenbergiana lethaea 80, 3–11 (2000). https://doi.org/10.1007/BF03043659

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  • DOI: https://doi.org/10.1007/BF03043659

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