Also a homonym of Acutiramus Ruedemann, 1935 [details]
As Stygonitocrella (Fiersiella). Currently valid as subgenus according to Suárez-Morales & Iliffe, 2005, but ... [details]
Nom. nud., refer Huys, 2009. [details]
As subgenus of Psyllocamptus Scott, 1899. [details]