Agnostids from the Upper Cambrian of Västergötland, Sweden

Abstract

Fourteen agnostid species are described from the Upper Cambrian of Västergötland, Sweden. They are assigned to eleven genera: Agnostus, Homagnostus, Trilobagnostus, Lotagnostus, Kormagnostus, Glyptagnostus, Hypagnostus, Peratagnostus, Cristagnostus, Pseudagnostus, and Aspidagnostus. Cristagnostus and Aspidagnostus have not previously been recorded from Scandinavia. The majority of the species are from the lower part of the Upper Cambrian, i.e., the Agnostus pisiformis, the Olenus and Homagnostus obesus, and the Parabolina spinulosa Zones. Agnostids are very rare in the upper part and only three species seem to be represented, viz. Trilobagnostus rudis, T. holmi, and Lotagnostus trisectus.

Ahlberg, P. & Ahlgren, J., 1996: Agnostids from the Upper Cambrian of Västergötland, Sweden. GFF, Vol. 118 (Pt. 3, September), pp. 129–140. Stockholm. ISSN 1103–5897.

Keywords:

• Arthropoda
• Agnostida
• taxonomy
• biostratigraphy
• Upper Cambrian
• Västergötland
• Sweden