The external gills and ornamentation of skull roof bones of the Lower Permian tetrapodDiscosauriscus (Kuhn 1933) with remarks to its ontogeny

descriptionPublicationkeyboard_double_arrow_right Article 01 Mar 1995 English Publisher:Springer Science and Business Media LLCJournal:Paläontologische Zeitschrift, volume 69, pages 265-281 (issn: 0031-0220, eissn: 1867-6812,

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Authors: Bratislava, Jozef Klembara;

doi: 10.1007/bf02985990

The external gills and ornamentation of skull roof bones of the Lower Permian tetrapodDiscosauriscus (Kuhn 1933) with remarks to its ontogeny

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Abstract

Until now, the largest specimens ofDiscosauriscus (and alsoUtegenia andAriekanerpeton- the Lower Permian members of the family Discosauriscidae) have been considered to be adult individuals. The largest specimens ofDiscosauriscus, in which the external gills are still present, had skull lengths of about 22-25 mm. Metamorphosis was believed to have commenced at this size in discosauriscids and specimens with skull lengths of about 50-54 mm were considered to be already adult or senile.

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Comenius University
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