Simon, E. and Mottequin, B. 2018.

Extreme reduction of morphological characters: a type of brachidial development found in several Late Cretaceous and Recent brachiopod species—new relationships between taxa previously listed as incertae sedis

. Zootaxa. 4444, 1 (Jul. 2018), 1–24. DOI:https://doi.org/10.11646/zootaxa.4444.1.1.