Revision of the genus Halitherium (Mammalia: Sirenia) from the Oligocene of Europe

欧洲渐新世的 Halitherium 属（哺乳动物：Sirenia）的修订

• 批准号: 33155351
• 负责人: Privatdozent Dr. Oliver Hampe
• 金额: --
• 依托单位: Museum für Naturkunde - Leibniz-Institut für Evolutions- und Biodiversitätsforschung (MfN)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2006
• 资助国家: 德国
• 起止时间: 2005-12-31 至 2009-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/33155351?language=en
• 关键词: Revision; genus; Halitherium; Mammalia; Sirenia

Four disarticulated, incompletely preserved Sirenia skeletons were described morphologically, systematically and stratigraphically from the lower Oligocene of the Rhine-Ruhr area. After extensive comparative studies, one of the partial skeletons could clearly be assigned to Halitherium schinzi known from the Mainz Basin. Two extremely fragmentary remains could be assigned to the genus Halitherium; a species determination is uncertain. Another partial skeleton, determined as Halitherium based on common characters, was recognized as a new species (Voß 2005: provisionally as Halitherium sp. type K-H) because of the presence of some individual characteristics. At present, two species of Halitherium are regarded as valid within the European Oligocene, H. schinzi KAUP 1838 and H. christoti FITZINGER 1842. Both taxa show a great intraspecific variability (e.g. KAUP 1855, LEPSIUS 1882, ABEL 1904, SlCKENBERG 1934). In addition, the differences between H. schinzi and H. christoli are minimal (ABEL 1904). A specific allocation of the skeletal remains from the Rhine-Ruhr area was accordingly difficult. We propose a phylogentic analysis of the Sirenia based on morphological-systematic treatment of the sirenians from the Palaeogene of Germany, Belgium and Austria focusing on the systematic position of the genus Haffthenum within the Dugongidae.

从形态学、系统学和地层学等方面描述了莱茵-鲁尔地区渐新世晚期发现的4具分离、保存不完整的Sirenia骨骼化石。经过广泛的比较研究，其中一个部分骨骼可以明确地被分配给美因茨盆地已知的Halitherium schinzi。两个非常零碎的遗骸可以被分配到Halitherium属;物种的确定是不确定的。另一个部分骨骼，根据共同特征确定为Halitherium，由于存在一些个体特征，被确认为一个新种（Voterium 2005：暂时为Halitherium sp. type K-H）。目前，在欧洲渐新世中有两种盐兽属的化石被认为是有效的，即H。schinzi KAUP 1838和H.第1842章.这两个分类群都表现出很大的种内变异性（例如KAUP 1855，LEPSIUS 1882，ABEL 1904，SlCKENBERG 1934）。此外，H. schinzi和H.大肠杆菌是最小的（ABEL 1904）。因此，很难对莱茵-鲁尔地区的遗骸进行具体分配。我们提出了Sirenia的形态系统的治疗的基础上，从德国，比利时和奥地利的古第三纪的sirenians集中在系统位置的属Haffthenum内的Dugongidae的系统分析。