Hadrosaurid jaw mechanics

• Autorzy: Weishampel D.B.
• Języki publikacji: EN

Abstrakty

EN

Jaw systems in hadrosaurids can be treated as chewing machines operating in three dimensions. As such, different possibilities of jaw mechanisms can be tested by using kinematic analyses to make predictions about tooth wear for each mechanism, ranging from akinetic monimostylic skulls to kinetic streptostylic skulls. A hadrosaurid jaw mechanism that includes a degree of lateral rotation of the maxilla-premaxilla joint, as well as laterocaudal streptostyly and mobility of other articulations, accounts for tooth wear present in these animals better than the currently-accepted propalinal mechanism. Lateral rotation of the maxilla and concomittant motion of other cranial segments is powered by mandibular adduction, and is best seen as a solution to a transverse power stroke constrained by an isognathous jaw system.

• Wydawca: -
• Czasopismo: Acta Palaeontologica Polonica
• Rocznik: 1983
• Tom: 28
• Numer: 1-2
• Opis fizyczny: p.271-280,fig.,ref.

Twórcy

autor

Weishampel D.B.

• Instltut fur Geologie and Palaontologie, Untversitat Tubingen, 7400 Tubingen. Federal Republic of German

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