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Article: Pterygometopine trilobites from the Ordovician of Baltoscandia

Publication: Palaeontology
Volume: 36
Part: 4
Publication Date: December 1993
Page(s): 743 769
Author(s): Valdar Jaanusson and Lars Ramsköld
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How to Cite

JAANUSSON, V., RAMSKÖLD, L. 1993. Pterygometopine trilobites from the Ordovician of Baltoscandia. Palaeontology36, 4, 743–769.

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The Palaeontological Association (Free Access)


A revision of the Pterygometopinae from Baltoscandia has revealed that the subfamily is more diverse at the generic level than previously known. New genera are Ingriops, Oelandiops, Upplandiops, and Keilapyge. The earliest species of Achatella are included in the new subgenus A. (Vironiaspis). The new species Oelandiops mirificus, Upplandiops calvus, Estoniops maennili, and E. fjaeckensis are described. Upplandiops calvus differs from most other dalmanitaceans in having only ten thoracic segments.
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