description Goniagnostus Overview
Goniagnostus is an extinct genus of small agnostid trilobites from the Middle Cambrian. The species Goniagnostus nathorsti defines the Goniagnostus nathorsti Zone, a biostratigraphic interval used for correlation in Scandinavia, Kazakhstan, Australia, and other Cambrian regions. Agnostids have a compact cephalon and pygidium with a short thorax, and most lack conventional compound eyes, traits that distinguish this group from many other trilobites. [Cambrian trilobite biostratigraphy](https://www.trilobites.info/biostratigraphy.htm)
help Goniagnostus FAQ
What is Goniagnostus?
Goniagnostus is an extinct genus of small agnostid trilobites from the Middle Cambrian. Its fossils are used in regional studies of Cambrian marine rocks.
What is the Goniagnostus nathorsti Zone?
The Goniagnostus nathorsti Zone is a biostratigraphic interval defined by the species Goniagnostus nathorsti. It helps scientists correlate rocks in different Cambrian regions.
Where is the Goniagnostus nathorsti Zone used?
The zone is used for correlation in Scandinavia, Kazakhstan, Australia, and other Cambrian regions. Comparing the same fossil zone helps match rock sequences across distant areas.
Was Goniagnostus a large trilobite?
No. Goniagnostus is described as a small agnostid trilobite. Agnostids were generally compact forms that lived in Cambrian marine environments.
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