description Eoagnostus Overview
Eoagnostus is an extinct genus of early agnostid trilobites known from terminal Lower Cambrian to earliest Middle Cambrian rocks. Its recorded occurrences include the Kinzers Shale and other formations in the eastern United States, Newfoundland, and Greenland. The genus is highly effaced: the frontal part of the glabella is weakly defined or absent, while the posterior glabella is inflated, a combination used to distinguish it from related agnostids.
help Eoagnostus FAQ
What kind of fossil was Eoagnostus?
Eoagnostus was an extinct genus of agnostid trilobites. It is known from rocks spanning the terminal Lower Cambrian into the earliest Middle Cambrian.
Where has Eoagnostus been found?
Recorded occurrences include the Kinzers Shale in the eastern United States, as well as formations in Newfoundland and Greenland. These finds place the genus in Cambrian marine environments across parts of the ancient northern continents.
When did Eoagnostus live?
Eoagnostus lived during the Cambrian Period, before the Middle Cambrian was well established. The genus is useful for studying early agnostid trilobites and their geographic distribution.
What made agnostid trilobites different from many other trilobites?
Agnostids such as Eoagnostus were generally very small and had only two thoracic segments. Their compact bodies and reduced eyes distinguish them from many larger, more familiar trilobites.
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