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The otic region of the skull of neognathous birds

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Old Wednesday 4th December 2019, 13:15   #1
Fred Ruhe
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Join Date: Feb 2010
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The otic region of the skull of neognathous birds

Gerald Mayr, 2020

The otic region of the skull of neognathous birds: on the homology and comparative morphology of some neurovascular and muscular foramina and other external skeletal structures

Vertebrate Zoology 70: 69-85

Abstract and free pdf: https://www.senckenberg.de/wp-conten..._2020_Mayr.pdf

Even though detailed anatomical studies of the otic region exist for some avian species, there are few comparative data for most extant higher-level clades. In the present study, the external osteology of the otic region of birds is studied in a broad taxonomic context and a focus has been put on the homology of neurovascular and muscular foramina in taxa of the Neognathae. It is detailed that this part of the skull offers significant structural variation, which is of potential phylogenetic and physiological significance. The otic region of many taxa is for the first time illustrated and some osteological features are highlighted that are not or only rarely commented on in existing accounts of the otic region. These include the foramina and osseous guiding structures for the occipital ramus of arteria ophthalmica externa, as well as the skeletal correlates of ramus palatinus and ramus hyomandibularis of nervus facialis, and the foramen for musculus columellae. In addition, different conformations of the pila otica are described and some structures of unknown significance are highlighted, which require further research.

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