Anataphrus vigilans Trilobite from Iowa

Name: Anataphrus (Vogdesia) vigilans

Trilobites Trilobite Order Asaphida, Family: Asaphidae, Subfamily Isotelinae

Geologic Time: Upper Ordovician

Size: 57 mm

Fossil Site: Maquoketa Formation, Fayette County, Iowa

Anataphrus vigilans TrilobiteAnataphrus vigilans is an Asaphid trilobite (Order: Asaphida; Family: Asaphidae Subfamily: Isotelinae) coming from the Ordovician Maquoketa Formation dolomitic shale strata of Fayette County, Iowa. This is a prone example of a trilobite rarely offered for sale that used to be named Vogdesia. Most are found enrolled; enrollment was a defensive response to predators. It has affinities with both Isotelus and Homotelus.

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