1.
Adrain JM, Mcadams NEB. The Lower Ordovician (upper Floian) bathyurid trilobite Aponileus Hu, with species from Utah, Texas, and Greenland. Zootaxa [Internet]. 2012 Apr. 30 [cited 2025 Apr. 4];3293(1):1–67. Available from: https://mapress.com/zt/article/view/zootaxa.3293.1.1