Distinction of Sivatherium from Libytherium and a new species of Libytherium (Giraffidae, Ruminantia, Mammalia) from the Siwaliks of Pakistan (Miocene)

IF 1.6 4区地球科学 Q2 PALEONTOLOGY Geobios Pub Date : 2022-10-01 DOI:10.1016/j.geobios.2022.06.002

María Ríos , Sayyed Ghyour Abbas , Muhammad Akbar Khan , Nikos Solounias

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引用次数: 1

Abstract

This study deals with the issues around the synonymization of the large extinct giraffid genera Libytherium and Sivatherium. We performed a morphological and biometrical analysis of the cranial remains of these giraffid genera and resolved this question by formulating criteria to distinguish Libytherium from Sivatherium, and to justify their systematic position within the Giraffidae. The present study also reports a new species of the genus Libytherium, Libytherium proton nov. sp. from the Chinji Formation (late Middle Miocene) and the Dhok Pathan Formation (Late Miocene) of the Siwalik Group of the Indian subcontinent. This extends the biogeographic and biostratigraphic range of Libytherium because this taxon had never been reported from the Siwaliks, Asia and the Miocene before this study. This study also initiates a detailed reassessment of the African and Siwalik material currently attributed to genus Sivatherium (and some other genera) and their proper allocation within the Giraffidae.

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巴基斯坦siwalik地区Sivatherium与Libytherium的区别及一新种(长颈鹿科，反刍动物目，哺乳动物目)

本研究涉及的问题，围绕同义词的大型灭绝长颈鹿属利比亚和Sivatherium。我们对这些长颈鹿属的颅骨遗骸进行了形态学和生物统计学分析，并通过制定标准来区分利比亚属和西瓦属，并证明它们在长颈鹿科中的系统地位，从而解决了这个问题。本文还报道了来自印度次大陆Siwalik群Chinji组(中中新世晚期)和Dhok Pathan组(晚中新世)的一新种——Libytherium proton nov. sp.。这扩大了利比亚石的生物地理和生物地层学范围，因为该分类群在此研究之前从未在siwalik、亚洲和中新世报道过。本研究还对目前归属于Sivatherium属(和其他一些属)的非洲和Siwalik材料及其在长颈鹿科中的适当分配进行了详细的重新评估。

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来源期刊

Geobios 地学-古生物学

CiteScore

3.30

自引率

6.20%

发文量

审稿时长

6-12 weeks

期刊介绍： Geobios publishes bimonthly in English original peer-reviewed articles of international interest in any area of paleontology, paleobiology, paleoecology, paleobiogeography, (bio)stratigraphy and biogeochemistry. All taxonomic groups are treated, including microfossils, invertebrates, plants, vertebrates and ichnofossils. Geobios welcomes descriptive papers based on original material (e.g. large Systematic Paleontology works), as well as more analytically and/or methodologically oriented papers, provided they offer strong and significant biochronological/biostratigraphical, paleobiogeographical, paleobiological and/or phylogenetic new insights and perspectices. A high priority level is given to synchronic and/or diachronic studies based on multi- or inter-disciplinary approaches mixing various fields of Earth and Life Sciences. Works based on extant data are also considered, provided they offer significant insights into geological-time studies.