Genus: Protoholocentrus SCHWARZHANS & JAGT, 2022
Etymology: Greek, proto, "first or early" + Holocentus, type genus of the Holocentriformes to which this genus is referred.
Species: janjanssensi SCHARZHANS & JAGT, 2022
Etymology: In honor of H. Jan Janssens (Gulpen, the Netherlands), hwo collected and donated the samples from which these specimens were obtained.
Holotype: NHMM 2021 020
Locality: 'Müller's Bed', Vaals-Eschberg, southern Limburg, the Netherlands.
Horizon: Just below the so-called Vaalsbroek Horizon, Gemmenrich Member, Vaalas Formation.
Biostratigraphy:
Age: Early Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.
Material: Otolith.
Paratypes:
NHMM 2021 021-023: Otoliths.