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The fossil galliform bird Paraortygoides from the Lower Eocene of the United Kingdom

The fossil galliform bird Paraortygoides from the Lower Eocene of the United Kingdom
The fossil galliform bird Paraortygoides from the Lower Eocene of the United Kingdom
A new fossil species assigned to the galliform genus Paraortygoides Mayr is described from the Lower Eocene (Ypresian Stage) London Clay Formation of the United Kingdom. Paraortygoides radagasti, n. sp., is referred to the genus on the basis of comparisons with other specimens from the Middle Eocene deposit of Messel (Hessen, Germany). Because of the three-dimensional preservation of this fossil material, P. radagasti contributes new information pertaining to the morphology of the genus Paraortygoides, in particular with regard to the thoracic vertebrae, tarsometatarsus, and toes. This genus, for example, is distinguished from other currently known fossil and extant galliform birds by the presence of deep pneumatic excavations in the lateral sides of the thoracic vertebrae. The results of a preliminary phylogenetic analysis suggest that Paraortygoides is basal within Galliformes (as already proposed by Mayr [2000]); monophyly of the order is supported with Megapodiidae as the basal sister taxon with respect to the Cracidae and Phasianidae. Paraortygoides radagasti is one of the oldest galliform birds described to date; its age and degree of preservation provide a reliable early phylogenetic constraint for the divergence of a basal clade within the order Galliformes
0003-0082
1-14
Dyke, Gareth J.
600ca61e-b40b-4c86-b8ae-13be4e331e94
Gulas, Bonnie E.
8476447b-8f6c-41fb-b1e8-679ca32a940f
Dyke, Gareth J.
600ca61e-b40b-4c86-b8ae-13be4e331e94
Gulas, Bonnie E.
8476447b-8f6c-41fb-b1e8-679ca32a940f

Dyke, Gareth J. and Gulas, Bonnie E. (2002) The fossil galliform bird Paraortygoides from the Lower Eocene of the United Kingdom. American Museum Novitates, 3360, 1-14. (doi:10.1206/0003-0082(2002)360<0001:TFGBPF>2.0.CO;2).

Record type: Article

Abstract

A new fossil species assigned to the galliform genus Paraortygoides Mayr is described from the Lower Eocene (Ypresian Stage) London Clay Formation of the United Kingdom. Paraortygoides radagasti, n. sp., is referred to the genus on the basis of comparisons with other specimens from the Middle Eocene deposit of Messel (Hessen, Germany). Because of the three-dimensional preservation of this fossil material, P. radagasti contributes new information pertaining to the morphology of the genus Paraortygoides, in particular with regard to the thoracic vertebrae, tarsometatarsus, and toes. This genus, for example, is distinguished from other currently known fossil and extant galliform birds by the presence of deep pneumatic excavations in the lateral sides of the thoracic vertebrae. The results of a preliminary phylogenetic analysis suggest that Paraortygoides is basal within Galliformes (as already proposed by Mayr [2000]); monophyly of the order is supported with Megapodiidae as the basal sister taxon with respect to the Cracidae and Phasianidae. Paraortygoides radagasti is one of the oldest galliform birds described to date; its age and degree of preservation provide a reliable early phylogenetic constraint for the divergence of a basal clade within the order Galliformes

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More information

Published date: 2002
Organisations: Ocean Biochemistry & Ecosystems

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Local EPrints ID: 205299
URI: http://eprints.soton.ac.uk/id/eprint/205299
ISSN: 0003-0082
PURE UUID: b77ba471-1f6b-413f-a0af-e15efda8cc25

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Date deposited: 08 Dec 2011 15:06
Last modified: 14 Mar 2024 04:34

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Contributors

Author: Gareth J. Dyke
Author: Bonnie E. Gulas

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