A Well-Preserved Archaeopteryx Specimen with Theropod Features

@article{Mayr2005AWA,
  title={A Well-Preserved Archaeopteryx Specimen with Theropod Features},
  author={Gerald Mayr and Burkhardt Pohl and Dieter Stefan Peters},
  journal={Science},
  year={2005},
  volume={310},
  pages={1483 - 1486}
}
A nearly complete skeleton of Archaeopteryx with excellent bone preservation shows that the osteology of the urvogel is similar to that of nonavian theropod dinosaurs. The new specimen confirms the presence of a hyperextendible second toe as in dromaeosaurs and troodontids. Archaeopteryx had a plesiomorphic tetraradiate palatine bone and no fully reversed first toe. These observations provide further evidence for the theropod ancestry of birds. In addition, the presence of a hyperextendible… 
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Comment on "A Well-Preserved Archaeopteryx Specimen with Theropod Features"
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The statistical support for the phylogenetic hypothesis that birds, or avian flight, originated twice is investigated and it is shown that it is no better supported by available morphological character data than the hypothesis of a single avian origin.
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The tenth skeletal specimen of the Upper Jurassic Archaeopterygidae is described and demonstrates the presence of a hyperextendible second toe in archaeopteryx, supporting previous assumptions that Archaeoperyx was only facultatively arboreal.
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A new reconstruction of the skulls of Archaeopteryx is presented, making the skull of this taxon even more theropod-like than previously recognized, and casting serious doubt on claims that an avian-style cranial kinesis was present in thisTaxon.
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Response to Comment on "A Well-Preserved Archaeopteryx Specimen with Theropod Features"
TLDR
It is argued that statistical support for the proposed phylogeny is weak, but the monophyly of Aves favored by most current researchers is also weakly supported, and it is believed that the statistical comparisons made by Corfe and Butler challenge the hypothesis regarding the ancestry of birds.
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A detailed description of the cranial anatomy of Haplocheirus is presented and the implications of this anatomy for cranial evolution within Alvarezsauroidea and at the base of Maniraptora are discussed.
An exquisitely preserved troodontid theropod with new information on the palatal structure from the Upper Cretaceous of Mongolia
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The palatal configuration suggests that the skull of Gobivenator would have been akinetic but had already acquired prerequisites for later evolution of cranial kinesis in birds, such as the loss of the epipterygoid and reduction in contact areas among bones.
Osteology of a New Late Cretaceous Troodontid Specimen from Ukhaa Tolgod, Ömnögovi Aimag, Mongolia
ABSTRACT A new troodontid dinosaur, Almas ukhaa, from the Late Cretaceous deposits of the Djadokhta Formation at Ukhaa Tolgod, Mongolia, is described here. The holotype specimen (IGM 100/1323)…
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Response to Comment on "A Well-Preserved Archaeopteryx Specimen with Theropod Features"
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