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Journal für Ornithologie

, Volume 142, Issue 1, pp 7–15 | Cite as

A mousebird (Aves: Coliiformes) from the Eocene of England

  • Gareth J. Dyke
  • David M. Waterhouse
Article

Summary

The first fossil mousebird (Aves, Coliiformes) known from the Eocene of England is described. This taxon,Eocolius walkeri gen. n. sp. n., is assigned to the order Coliiformes (mousebirds) on the basis of a character of the proximal ulna (large cotyla dorsalis). The degree of similarity between the preserved elements ofEocolius and those of the other known fossil and Recent taxa further support this conclusion. At present, this new taxon is considered to occupy an unresolved position near to the base of the coliiform ingroup; the phylogenetic position ofEocolius cannot be resolved further owing to a lack of preservation of diagnostic characters.

Key words

fossil birds Eocolius walkeri gen. n. sp. n. Coliiformes mousebirds phylogeny 

Ein Mausvogel (Aves: Coliiformes) aus dem Eozän von England

Zusammenfassung

Der erste fossile Mausvogel (Aves: Coliiformes) aus dem Eozän von England wird beschrieben. Dieses Taxon,Eocolius walkeri gen. n. sp. n., wird aufgrund von Merkmalen der proximalen Ulna (grosse Cotyla dorsalis) in die Ordnung Coliiformes gestellt. Darüber hinaus stützt der Grad der Üebereinstimmung zwischen den erhaltenen Skelettelementen vonEocolius und den anderen bekannten fossilen und rezenten Taxa diese Zuordnung. Zur Zeit nimmt dieses neue Taxon eine nicht näher aufgelöste Stellung an der Basis der Coliiformes ein. Das Fehlen diagnostischer Merkmale lässt keine sichere Zuordnung vonEocolius zu den ausgestorbenen Sandcoleidae oder den rezenten Coliidae zu.

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Copyright information

© Deutsche Ornithologen-Gesellschaft/Blackwell Wissenschafts-Verlag 2001

Authors and Affiliations

  1. 1.Department of Earth SciencesUniversity of BristolBristolU.K.
  2. 2.Dept. OrnithologyAmerican Museum of Natural HistoryNew YorkUSA

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