Journal article

A non-archaeopterygid avialan theropod from the Late Jurassic of southern Germany

  • Rauhut, Oliver W. M. Staatliche naturwissenschaftliche Sammlungen Bayerns (SNSB), Bayerische Staatssammlung für Paläontologie und Geologie, München, Germany - Department for Earth and Environmental Sciences, Palaeontology and Geobiology, Ludwig-Maximilians-Universitaet, Muenchen, Germany - GeoBioCenter, Ludwig-Maximilians-Universitaet, Muenchen, Germany
  • Tischlinger, Helmut Tannenweg 16, Stammham, Germany
  • Foth, Christian Department of Geosciences, Université de Fribourg, Switzerland
Published in:
  • eLife. - 2019, vol. 8, p. e43789
English The Late Jurassic ‘Solnhofen Limestones’ are famous for their exceptionally preserved fossils, including the urvogel Archaeopteryx, which has played a pivotal role in the discussion of bird origins. Here we describe a new, non-archaeopterygid avialan from the Lower Tithonian Mörnsheim Formation of the Solnhofen Archipelago, Alcmonavis poeschli gen. et sp. nov. Represented by a right wing, Alcmonavis shows several derived characters, including a pronounced attachment for the pectoralis muscle, a pronounced tuberculum bicipitale radii, and a robust second manual digit, indicating that it is a more derived avialan than Archaeopteryx. Several modifications, especially in muscle attachments of muscles that in modern birds are related to the downstroke of the wing, indicate an increased adaptation of the forelimb for active flapping flight in the early evolution of birds. This discovery indicates higher avialan diversity in the Late Jurassic than previously recognized.
Faculté des sciences et de médecine
Département de Géosciences
  • English
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