Abstract
The early Eocene locality of La Borie is located near the village of Saint-Papoul, in southwestern France. It consists of clay deposits that have yielded numerous vertebrate fossils, including remains of the giant flightless bird Gastornis. These remains were initially attributed to the species G. parisiensis, which is otherwise recorded from the late Paleocene and earliest Eocene of the North Sea Basin. New fossil birds collected in the La Borie clay pit in 2018 include an almost complete mandible of Gastornis. We describe a new species of Gastornis based on this mandible and we show that the previously described remains from La Borie must be assigned to this new species. The new species differs from other species of Gastornis in the morphology of the mandible, maxilla and quadrate. The morphological diversity of the genus Gastornis, which existed in Europe for at least 17 million years, is emphasized.LSID of publication: urn:lsid:zoobank.org:pub:10E7938B-C972-4127-94DC-169D35977B11.
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