Oogenus: Triprismatoolithus JACKSON & VARRICCHIO, 2010
Oospecies: stephensi JACKSON & VARRICCHIO, 2010
Referred material:
Locality: First Find Micorsite (OTM 99-19), Sevenmile Hill outcrops, Teton County, Montana.
Horizon: Two Medicine Formation.
Biostratigraphy:
Age: Judithian age, Campanian Stage, Senonian subepoch, Upper Gulf epoch, Late Cretaceous.
Material:
ES 127: Abnormal, multilayered eggshell.