A new genus of stem lagomorph (Mammalia: Glires) from the Middle Eocene of the Erlian Basin, Nei Mongol, China

• Autorzy: Fostowicz-Frelik L. , Li Q.
• Języki publikacji: EN

Abstrakty

EN

We report the discovery of Erenlagus anielae, a new genus and species of stem lagomorph from the lower part of the Middle Eocene Irdin Manha Formation at the Huheboerhe locality, Erlian Basin, Nei Mongol, China. The remains consist of isolated teeth; however, the material includes all loci except the incisors and P2. The new lagomorph is characterized by a small size and high degree of unilateral hypsodonty comparable to that of Aktashmys and slightly higher than that observed in the coeval and co-occurring Strenulagus. Further, it shows advanced root fusion, which exceeds even that in Gobiolagus. Although phylogenetic relationships of the Eocene lagomorphs from Asia are still not fully resolved, the dental characters of Erenlagus anielae suggest that it is most closely related to ʻLushilagusʼ danjingensis from the Middle Eocene of Henan, China and Aktashmys montealbus from the late Early Eocene of Kyrgyzstan. This stratigraphically well-constrained finding represents one of the lagomorph genera that appeared in the Eocene Glires paleobiodiversity reservoir, the Erlian Basin in Nei Mongol.

Słowa kluczowe

EN

new genus; stem lagomorph; Lagomorpha; evolution; Inner Mongolia; Irdinmanhan; Mammalia; Glires; Middle Eocene; Eocene; Erlian Basin; China

• Wydawca: -
• Czasopismo: Acta Zoologica Cracoviensia
• Rocznik: 2014
• Tom: 57
• Numer: 1-2
• Opis fizyczny: p.29-42,fig.,ref.

Twórcy

autor

Fostowicz-Frelik L.

• Key Laboratory of Evolutionary Systematics of Vertebrates, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing 100044, People's Republic of China
• Institute of Paleobiology, Polish Academy of Sciences, Twarda 51/55, 00-818 Warsaw, Poland

autor

Li Q.

• Key Laboratory of Evolutionary Systematics of Vertebrates, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing 100044, People’s Republic of China

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Identyfikatory

DOI

10.3409/azc.57_1-2.29