首页> 外文期刊>Alcheringa: An Australasian Journal of Palaeontology >First evidence of a large predatory plesiosaurian from the Lower Cretaceous non-marine 'Wealden facies' deposits of northwestern Germany
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First evidence of a large predatory plesiosaurian from the Lower Cretaceous non-marine 'Wealden facies' deposits of northwestern Germany

机译:首先是来自德国西北部的下白垩纪非海洋“Weaolden”沉积物的大型掠夺性覆谱型普罗旺翁的证据

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Sachs, S., Hornung, J.J., Lallensack, J.N. & Kear, B.P., November.2017. First evidence of a large predatory plesiosaurian from the Lower Cretaceous non-marine Wealden facies' deposits of northwestern Germany. Alcheringa 42, 501-508. ISSN 0311-5518.Here, we describe the incomplete mandible of a large-skulled pliosauromorph' plesiosaurian from the Lower Cretaceous (Berriasian) of northwestern Germany. The fossil derives from limnic-brackish Wealden facies' deposits of the Deister Formation (Buckeberg Group), and is preserved as a natural mould in fine-grained sandstone. Examination of the original remains, in conjunction with a three-dimensional photogrammetrically digitized cast', revealed a conspicuous rosette of symphyseal alveoli, which would otherwise typically characterize Early-Middle Jurassic macrophagous plesiosaurians including rhomaleosaurids and the pliosaurid Simolestes. The Deister Formation pliosauromorph' represents the first record of a large-bodied plesiosaurian macrocarnivore from the Wealden-facies' strata of Europe, and thus adds a previously unrecognized trophic level of aquatic apex predators to the Early Cretaceous non-marine ecosystems of Europe.
机译:Sachs,S.,Hornung,J.J.,Lallensack,J.N. &Kear,B.P.,11月17日。首先证明来自德国西北部的下白垩纪非海洋织物相沉积物的大型掠夺性覆谱型覆盖物。 alcheringa 42,501-508。 ISSN 0311-5518.这里,我们描述了来自德国西北部的下白垩纪(Berriasian)的大颅围的偏光围攻性围裙的不完整下颌骨。化石源于Linnic-Brackish Weaolden的沉积物(Buckeberg Group)的沉积物,并被保存为细粒砂岩中的天然模具。与三维光摄影测量般的铸造相结合的原始遗骸仍然揭示了对称肺泡的显着玫瑰花,否则通常会表征早期的侏罗纪肠道渗透率,包括rhomaleosaurids和沉思脂质体的纤维水平。子宫形成偏光素'代表了来自欧洲织造阶层的大型养老型宏观宏观的第一次记录,从而增加了以前无法识别的欧洲白垩纪非海洋生态系统的水生Apex捕食者水平。

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