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GEOREF RECORD

Waves of bone deposition on the rostrum of the pterosaur Pteranodon

S. Christopher Bennett and Paul Penkalski
Waves of bone deposition on the rostrum of the pterosaur Pteranodon (in New perspectives on pterosaur palaeobiology, D. W. E. Hone (editor), Mark P. Witton (editor) and David M. Martill (editor))
Special Publication - Geological Society of London (February 2017) 455 (1): 69-81

Abstract

Four specimens of the pterosaur Pteranodon exhibit patterns of irregular alternating light and dark bands on the lateral surfaces of the upper jaw anterior to the nasoantorbital fenestra. Examinations reveal that the maxilla and premaxilla of Pteranodon consisted of two thin sheets of bone interconnected by regularly spaced septa with the spaces contained within presumably pneumatized, resulting in a structure analogous to modern honeycomb sandwich panels. The alternating light and dark bands resulted from waves of bone deposition moving anteriorly along the external surface of the lateral sheet of bone and laying down thin laminae of new bone while bone was simultaneously resorbed from the internal surface of the lateral sheet to maintain its thickness. The specimens that exhibit the bands were immature males and no banding was found in mature specimens or immature females. Therefore, the presence of the bands in immature males is interpreted as correlated with the enlargement and reshaping of the rostrum as males approached and attained sexual maturity.


ISSN: 0305-8719
EISSN: 2041-4927
Coden: GSLSBW
Serial Title: Special Publication - Geological Society of London
Serial Volume: 455
Serial Issue: 1
Title: Waves of bone deposition on the rostrum of the pterosaur Pteranodon
Title: New perspectives on pterosaur palaeobiology
Author(s): Bennett, S. ChristopherPenkalski, Paul
Author(s): Hone, D. W. E.editor
Author(s): Witton, Mark P.editor
Author(s): Martill, David M.editor
Affiliation: Fort Hays State University, Department of Biological Sciences, Hays, KS, United States
Pages: 69-81
Published: 20170222
Text Language: English
Publisher: Geological Society of London, London, United Kingdom
References: 24
Accession Number: 2017-026030
Categories: Vertebrate paleontology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
Secondary Affiliation: Geology Museum, USA, United States
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2018, American Geosciences Institute. Reference includes data from The Geological Society, London, London, United Kingdom
Update Code: 201716
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