ADRAIN, J. M.; MCADAMS, N. E. B.; KARIM, T. S. The Middle Ordovician bathyurid trilobite Pseudoolenoides, with a revised trilobite biostratigraphy of the Dapingian and lower Darriwilian of western Laurentia. Zootaxa, Auckland, New Zealand, v. 3467, n. 1, p. 1–97, 2012. DOI: 10.11646/zootaxa.3467.1.1. Disponível em: https://mapress.com/zt/article/view/zootaxa.3467.1.1. Acesso em: 3 apr. 2025.