engleski

Aspects of functional analysis and ornamentation of some pliocene viviparids

In this paper, functional morphologic analysis of Pliocene freshwater gastropods from phylogenetic line Viviparus neumayri to Viviparus ornatus is carried out. On this section of the phylogenetic line it is possible to follow continuous development of the shell ornamentation (shouldering and rib formation) from ancestral V. neumayri with smooth shell, to V. ornatus, which represent final stage in the spiral rib formation.The problem of shell ribs function is discussed from analytical point of view, and also analyzed by Finite element method (FEM).

Functional morphology; Viviparid; Evolution; Finite Element Analysis; Paratethys

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