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A new Tolypelepidid (Agnatha, Heterostraci) from the Late Silurian of Poland

Published online by Cambridge University Press:  09 November 2015

Marek Dec
Marek Dec*
Affiliation:
Institute of Paleobiology, Polish Academy of Sciences, Twarda 51/55, 00-818, Warsaw, Poland 〈mdec@twarda.pan.pl〉
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Abstract

Tolypelepis mielnikensis n. sp. from a core sample of the Late Silurian (Pridoli) succession in Mielnik, Poland shares tolypelepidid features such as a subdivision of the dorsal shield into epitega, and ornamentation of short dentine ridges grouped into scale-like units with a coarser, higher median ridge encircled by narrower and lower ridges. A constriction of the dorsal shield anterior to the orbit level with the orbital notches significantly deeper than in other tolypelepidids discriminates it from other Tolypelepis species.

Type
Articles
Information
Journal of Paleontology , Volume 89 , Issue 4 , July 2015 , pp. 637 - 644
Copyright
Copyright © 2015, The Paleontological Society 

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