Project 3481: K. Gruntmejer, D. Konietzko‐Meier, J. Marcé‐Nogué, A. Bodzioch, J. Fortuny. 2019. Cranial suture biomechanics in Metoposaurus krasiejowensis (Temnospondyli, Stereospondyli) from the upper Triassic of Poland. Journal of Morphology:null. (In Press)
Specimen: † Metoposaurus krasiejowensis (Opole University, Institute of Biology, Laboratory of Palaeobiology:UOPB 00124)
View: STL 3D Model Skull

Abstract

Cranial sutures connect adjacent bones of the skull and play an important role in the absorption of stresses that may occur during different activities. The Late Triassic temnospondyl amphibian Metoposaurus krasiejowensis has been extensively studied over the years in terms of skull biomechanics, but without a detailed description of the function of cranial sutures. In the present study, 34 thin sections of cranial sutures were examined in order to determine their histovariability and interpret their biomechanical role in the skull. The histological model was compared with three-dimensional-finite element analysis (FEA) simulations of the skull under bilateral and lateral biting as well as skull-raising loads for maximum and minimum principal stress. Histologically, only two sutural morphologies were recognised in the skull of Metoposaurus: interdigitated sutures (commonly associated with compressive stresses) are dominant along the entire length of the skull roof and palate; tongue-and-groove sutures (commonly associated with tensile stresses) are present across the maxilla. FEA shows a much more complex picture of stress type and distribution than predicted by sutures. Common to both methods is a predominance of compressive stresses which act on the skull during biting. The methods predict different stress regimes during biting in the posterior part of the skull: where histological analysis suggests compression, FEA predicts tension. For lateral biting and skull raising, histological and digital reconstructions show similar general patterns but with some variations


Read the article »

Article DOI: 10.1002/jmor.21070

Project DOI: 10.7934/P3481, http://dx.doi.org/10.7934/P3481
This project contains
  • 3 Media
  • 1 Taxon
  • 1 Specimen
Total size of project's media files: 797 MB

Download Project SDD File
Currently Viewing:
MorphoBank Project 3481


    Members

    member name taxa specimens media
    Josep Fortuny
    Project Administrator
    Last logged in 10/23/19
    113


    Project has no matrices defined.



    Project views

    type number of views Individual items viewed (where applicable)
    Total project views182
    Project overview46
    Media views82Media search (49 views); M674193 (1 view); M681557 (11 views); M675418 (11 views); M675420 (10 views);
    Taxon list10
    Specimen list20
    Bibliography5
    Views for media list19




    Project downloads

    type number of downloads Individual items downloaded (where applicable)
    Total downloads from project5
    Media downloads1M681557 (1 download);
    Project downloads4