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Ein primitiver acanthodier (pisces) aus dem unterdevon lettlands

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Abstract

Latviacanthus ventspilsensis n.gen., n.sp. is described from a drilling core at Ventspils, Latvia, U.S.S.R. It is placed nearEuthacanthus, Climatiidae, chiefly on the basis of similarities in the gill region (1 hyoid and 3 accessoric gill covers). Main features ofLatviacanthus are: palatoquadrate and Meckel’s cartilage ossified as a single element each, multiple-cuspid teeth not fused to the jaws, slender pectoral spine, weakly developed dermal shoulder-girdle.

de]Kurzfassung

Latviacanthus ventspilsensis n.gen., n.sp., ein primitiver climatiider Acanthodier, wird von einem Bohrkern der Bohrung Ventspils, Lettland, USSR, beschrieben. Die neue Gattung wird aufgrund von Ähnlichkeiten in der Kiemenregion (1 hyoider und 3 akzessorische Kiemendeckel) innerhalb der Climatüdae in die Nähe vonEuthacanthus gestellt. Hauptmerkmale der Gattung sind: Palatoquadratum und MECKELscher Knorpel je als einheitliches Element verknöchert, mehrspitzige Einzelzähne nicht mit dem Kiefer verwachsen, schlanker Brustflossenstachel, schwach verknöcherter dermaler Schultergürtel.

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Lawrence, HP.S., Norman, J.Z. Ein primitiver acanthodier (pisces) aus dem unterdevon lettlands. Paläont. Z. 56, 95–105 (1982). https://doi.org/10.1007/BF02988788

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  • DOI: https://doi.org/10.1007/BF02988788

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