A new Tolypelepidid (Agnatha, Heterostraci) from the Late Silurian of Poland. (9th November 2015)

• Record Type: Journal Article
• Authors: Dec, Marek
• Is Part Of: Journal of paleontology. Volume 89:Number 4(2015)
• Page Start: 637
• Page End: 644
• Publication Date: 2015-11-09
• Subjects: Fossils -- Classification -- Periodicals; Paleontology -- Periodicals; Paléontologie -- Périodiques; Fossils -- Classification; Paleontology; Paleontologie; Periodicals; Electronic journals; 560.5
• DOI: 10.1017/jpa.2015.28
• Languages: English
• ISSNs: 0022-3360

Abstract

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.