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A dwarf sabertooth cat (Felidae: Machairodontinae) from Shanxi, China, and the phylogeny of the sabertooth tribe Machairodontini
Key Laboratory of Orogenic Belts and Crustal Evolution, School of Earth and Space Sciences, Peking University, 5 Yiheyuan Road, Beijing, 100871, China.
Naturhistoriska riksmuseet, Enheten för paleobiologi.ORCID-id: 0000-0002-9586-4017
Key Laboratory of Orogenic Belts and Crustal Evolution, School of Earth and Space Sciences, Peking University, 5 Yiheyuan Road, Beijing, 100871, China.ORCID-id: 0000-0002-6336-1730
2022 (engelsk)Inngår i: Quaternary Science Reviews, ISSN 0277-3791, E-ISSN 1873-457X, Vol. 284, s. 107517-107517, artikkel-id 107517Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The tribe Machairodontini is a major lineage of felid sabertooth cats that flourished in the late Cenozoic and included the top predators in the ecosystem of that time. As top predators members of the tribe had a profound influence on the paleoenvironment, yet the evolution and diversification of this tribe are unclear due to a lack of comprehensive revision and phylogenetic study. Here we describe a new dwarfed ecomorph of Machairodontini, Taowu liui gen. et sp. nov., from the Early Pleistocene of northern China,and carry out the best sampled phylogeny of the subfamily to date. Our analyses support that the African Mio-Pleistocene Lokotunjailurus represents an early divergent group, convergent with the Amphimachairodus-Homotheriina lineage in dental traits. The derived Pliocene to Pleistocene subtribe Homotheriina originated in Africa, from Adeilosmilus gen. nov. kabir or very a closely related taxon. Taowu liui gen. et sp. nov. belongs to a sister clade to Homotheriina. The Plio-Pleistocene Homotheriina of theNew World belong to a monophyletic group in which Ischyrosmilus-Xenosmilus show a gradual adaptation to handling slow and powerful prey, whereas the true Homotherium only appeared after theMiddle Pleistocene, in a separate intercontinental dispersal event.

sted, utgiver, år, opplag, sider
Amsterdam: Elsevier, 2022. Vol. 284, s. 107517-107517, artikkel-id 107517
Emneord [en]
Machairodontini, Homotheriina, Taowu, Adeilosmilus, Phylogeny
HSV kategori
Forskningsprogram
Ekosystem och arthistoria; Den föränderliga jorden
Identifikatorer
URN: urn:nbn:se:nrm:diva-4859DOI: 10.1016/j.quascirev.2022.107517OAI: oai:DiVA.org:nrm-4859DiVA, id: diva2:1713684
Merknad

This work was supported by the Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDB26000000 and XDA20070203), Key Frontier Science Research Program of the Chinese Academy of Sciences (Grant Nos. QYZDY-SSW-DQC-22 and GJHZ1885), Second Tibetan Plateau Scientific Expedition and Research (Grant 2019QZKK0705), National Natural Science Foundation of China (Grant Nos. 41430102, 41872001, 41872005 and 41772018), China Scholarship Council, and the Frick Fund, Department of Vertebrate Paleontology, Division of Paleontology, AMNH.

Tilgjengelig fra: 2022-11-26 Laget: 2022-11-26 Sist oppdatert: 2022-12-04bibliografisk kontrollert

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