Oospecies: ramosus TANKA, ZELENITSKY, SAEGUSA, IKEDA, DeBUHR & THERRIEN, 2015, 2016
Etymology: Latin, ramos, referring to the branching ridges on the outer surface of the eggshell.
Holotype: MNHAH D1-040057
Locality: Kamitaki, southeastern Tamba City, Hyogo, Honshu Island, Japan.
Horizon: Lower part of "Lower Formation", Sasayama Group.
Biostratigraphy:
Age: Lower to middle Albian Stage, Middle Gallic Subepoch, Upper Early Cretaceous Epoch, Early Cretaceous.
Material: Eggshell fragment.
Referred material:
MNHAH D1-040058 t oD1-040063: Eggshell fragments.
KUBOTA & TANAKA, 2025
Locality: Tambasasayama and Tamba cities, Hyogo Prefecture, Honshu Island, Japan.
Horizon: Ohyamashimo Formation.
Biostratigraphy:
Age: Lower to middle Albian Stage, Middle Gallic Subepoch, Upper Early Cretaceous Epoch, Early Cretaceous.
Material:
D1060997, D1060998: Eggshells.
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