New avian remains from the early Eocene of La Borie, southern France

IF 1.6 4区地球科学 Q2 PALEONTOLOGY

Geobios Pub Date : 2024-04-01 DOI:10.1016/j.geobios.2022.10.004

Cécile Mourer-Chauviré , Estelle Bourdon , Sylvain Duffaud , Guy Le Roux , Yves Laurent

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Abstract

The giant flightless bird Gastornis laurenti Mourer-Chauviré and Bourdon, 2020, has been described from a mandible, maxilla and quadrate discovered in the early Eocene locality of La Borie (middle Ypresian, reference level MP 8–9). This locality has yielded abundant fossil vertebrates. We describe here new postcranial remains of G. laurenti, a coracoideum assigned to Tegulavis corbalani nov. gen., nov. sp. (cf. Galliformes), a tarsometatarsus attributed to Papulavis annae nov. gen., nov. sp. (cf. Aramidae), and the tibiotarsus of a small gruiform related to either Walbeckornis or Messelornithidae. The study of the postcranial material confirms that the species G. laurenti differs from other species of Gastornis in many features. The avifauna from La Borie is not very diversified but matches well with the paleoenvironment, which consists of an alluvial flood plain with sparse vegetation, in a tropical climate.

LSID of publication: urn: lsid: zoobank.org: pub: 5BA44166-BBEZ-41E7-BG8C-8A1DBCBA14AB.

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法国南部La Borie始新世早期的新鸟类遗骸

2020 年，Mourer-Chauviré 和 Bourdon 从 La Borie 早始新世（中伊普雷期，参考水平 MP 8-9）发现的下颌骨、上颌骨和四肢上描述了巨型不会飞的鸟 Gastornis laurenti。该地点出土了大量脊椎动物化石。我们在此描述了 G. laurenti 的新的颅后残骸、一个归属于 Tegulavis corbalani 新属、新种（参照 Galliformes）的 coracoideum、一个归属于 Papulavis annae 新属、新种（参照 Aramidae）的跗蹠，以及一个与 Walbeckornis 或 Messelornithidae 有关的小侏儒形的胫跗骨。颅后材料的研究证实，G. laurenti 与 Gastornis 的其他种类在许多特征上有所不同。La Borie的鸟类种类不是很多，但与古环境非常吻合，古环境包括热带气候下植被稀疏的冲积洪积平原：5BA44166-BBEZ-41E7-BG8C-8A1DBCBA14AB.

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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.