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The birds from the Early Pleistocene of Ceyssaguet (Lavoûte‑sur‑Loire, Haute‑Loire, France): description of a new species of the genus aquila

Les oiseaux du Pléistocène inférieur de Ceyssaguet (Lavoûte‑sur‑Loire, Haute‑Loire, France) : description d’une nouvelle espèce du genre Aquila
Cécile Mourer‑Chauviré and Marie‑Françoise Bonifay
p. 183-194

Abstracts

The Ceyssaguet avifauna includes four taxa, among which a new species of the genus Aquila, dedicated to Claude Guérin, and characterized by a larger size and different proportions from the other species of this genus. It also includes the recent species Phalacrocorax carbo, the Great Cormorant, the presence of which can be explained by the proximity of a lake and also of the Loire River. The presence of Accipiter gentilis, the Northern Goshawk, indicates a wooded environment, which agrees well with the results of the pollen analysis.

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Excerpt

Full text document will be published online on September 2020.

Outline

1 – Introduction
2 - Material and methods
3 - Systematic paleontology
3.1 - Order pelecaniformes
3.1.1 - Comparison with the recent forms
3.1.2 - Comparison with fossil forms
3.2 - Order falconiformes
3.2.1 - Genus Aquila Brisson
3.2.1.1 - Descriptions and comparisons
3.2.1.1.1 - Description and comparisons with Aquila chrysaetos
3.2.1.1.2 - Comparison with the other recent species of Aquila
3.2.1.1.3 - Comparison with fossil forms
3.2.1.2 - Paleoecological considerations
3.2.2 - Genus Accipiter Brisson
3.3 - Order passeriformes
4 - Palaeoenvironment

First lines

1 – Introduction

The Ceyssaguet locality is situated in the French Massif Central, near the Loire valley, about 1000 m above sea-level. Several Early Pleistocene sites are situated in the same area, such as Senèze, Sainzelles, and Soleilhac (fig. 1) (Bonifay & Brugal, 1996). At Ceyssaguet the bones were found in an ancient volcano. After its explosion, a maar lake was formed inside the crater. Then, the outlet of the lake dug a small gorge in the surrounding basalts in which loess were deposited making possible the preservation of the fossil bones (Argant & Bonifay, 2011) (fig. 2). The fossils with CEY-2 acronym come from the inside of the crater.

The age of this locality is relatively well established. The basalts of the oldest flow have been dated in 1985 by J.-M. Cantagrel (Department of Geology-Mineralogy, University of Clermont-Ferrand) at 1.4 Ma. This dating has been communicated in litteris and included into several publications but has not been formally published. The faunas,...

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References

Bibliographical reference

Cécile Mourer‑Chauviré and Marie‑Françoise Bonifay, « The birds from the Early Pleistocene of Ceyssaguet (Lavoûte‑sur‑Loire, Haute‑Loire, France): description of a new species of the genus aquila », Quaternaire, vol. 29/3 | 2018, 183-194.

Electronic reference

Cécile Mourer‑Chauviré and Marie‑Françoise Bonifay, « The birds from the Early Pleistocene of Ceyssaguet (Lavoûte‑sur‑Loire, Haute‑Loire, France): description of a new species of the genus aquila », Quaternaire [Online], vol. 29/3 | 2018, Online since 01 September 2020, connection on 21 May 2019. URL : http://journals.openedition.org/quaternaire/9957 ; DOI : 10.4000/quaternaire.9957

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About the authors

Cécile Mourer‑Chauviré

Université Claude Bernard Lyon 1, ENS de Lyon, CNRS, UMR 5276, LGL-TPE, F-69622, Villeurbanne, France. Courriel : cecile.mourer@gmail.com

Marie‑Françoise Bonifay

Aix‑Marseille Université, CNRS, MCC, UMR 7269, LAMPEA, F-13094 Aix‑en‑Provence, France. Courriel : mfbonifay@gmail.com

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