Trilobita - Proetida - Bathyuridae

Full reference: J. D. Loch. 2007. Trilobite biostratigraphy and correlation of the Kindblade Formation (Lower Ordovician) of Carter and Kiowa Counties, Oklahoma. Oklahoma Geological Survey Bulletin 149:1-154

Parent taxon: Bathyurinae according to J. D. Loch 2007

Sister taxa: Cullisonia, Ranasasus, Speyeris

Subtaxa: Gelasinocephalus pustulosus, Gelasinocephalus whittingtoni

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Type: Gelasinocephalus whittingtoni

Ecology: fast-moving low-level epifaunal deposit feeder