Oogenus: Spheruprismatoolithus BRAY, 1999
Etymology: Refers to the structure of shell units, having extended characteristics of the spherulitic (“spheru”) portion in a prismatic eggshell (“prismatic”)

Oospecies: condensus BRAY, 1999
Etymology: Latin, condensus, “dense, thick”: refers to the increased proportion of spherulitic region of the shell.

Holotype: UCM 47627

Locality: UCM L79059, Mudbank Site 1.2, Emery County, Utah.

Horizon: North Horn Formation.

Biostratigraphy:

Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch, Upper Gulf Epoch, Late Cretaceous.

Material: Holotype and HEC 289 consist of 270 fragments weathering out of a hole 5.5 cm in diameter.

Referred material:

Locality: Lizard Locality, Emery County, Utah.

Horizon: North Horn Formation.

Biostratigraphy:

Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch, Upper Gulf Epoch, Late Cretaceous.

Material:

HEC 832-1,2,3: Eggshell fragments numbering thousands.

 

 

Locality: Missel Site, Montana.

Horizon: Two Medicine Formation.

Biostratigraphy:

Age: Judithian age, Campanian Stage, Senonian subepoch, Upper Gulf epoch, Late Cretaceous.

Material:

HEC 374-3R: 25 eggshell fragments.

 


Locality: Eileens Nest, Montana.

Horizon: Two Medicine Formation.

Biostratigraphy:

Age: Judithian age, Campanian Stage, Senonian subepoch, Upper Gulf epoch, Late Cretaceous.

Material:

HEC 619a: 75 eggshell fragments.

 

 

Locality: Microsite, Montana.

Horizon: Two Medicine Formation.

Biostratigraphy:

Age: Judithian age, Campanian Stage, Senonian subepoch, Upper Gulf epoch, Late Cretaceous.

Material:

HEC 581-2: Eggshells.

 

 

Locality: Red Bone, Montana.

Horizon: Two Medicine Formation.

Biostratigraphy:

Age: Judithian age, Campanian Stage, Senonian subepoch, Upper Gulf epoch, Late Cretaceous.

Material:

HEC 624-5: Eggshells.

 

 

Locality: Lisa’s Canyon, Montana.

Horizon: Two Medicine Formation.

Biostratigraphy:

Age: Judithian age, Campanian Stage, Senonian subepoch, Upper Gulf epoch, Late Cretaceous.

Material:

HEC 622-6: Eggshells.

 

 

Locality: Long Time Waiting site, Hill County, Montana.

Horizon: Two Medicine Formation.

Biostratigraphy:

Age: Judithian age, Campanian Stage, Senonian subepoch, Upper Gulf epoch, Late Cretaceous.

Material:

HEC 787-6: Eggshells.