Genus: Varalphadon JOHNSON, 1996
Etymology: Latin, vara, "various," referring to the variable presence or absence of stylar cusp C on upper molars referred to the genus + Alphadon.
= Ancistodelphys CIFELLI, 1990
Etymology: Greek, agkhistos, “nearest” and Greek, delphys, “womb”: Nearest opossum.

Species: wahweapensis (CIFLLI, 1990) JOHNSON, 1996
Etymology:
= Protalphadon wahweapensis CIFELLI, 1990
Etymology:

Holotype: OMNH 20115

Locality: UALVP locality MR-6, Verdigirs Coulee, 29 km east of Milk River, Warner County, Alberta Province, Canada.

Horizon: Upper Milk River Formation.

Biostratigraphy:

Age: Aquilian age, Lower Campanian Stage, Aquilian in age, Senonian subepoch, Upper Gulf epoch, Late Cretaceous.

Material: UM3.

Referred material:

NMA V4572, OMNH 20121, OMNH 20595: UM1.

OMNH 20109, OMNH 20587: UM2.

OMNH 20467: UM3.

OMNH 20536: Fragment of dentary preserving LM1-3.

OMNH 20599, 20125, 20601, 20597, MNA V4516, V4575: LM2 or 3.

 


= Ancistodelphys archibaldi CIFELLI, 1990
Etymology:

Holotype: OMNH 20133

Locality: OMNH locality V11, Garfield County, Utah.

Horizon: Lower Horizon Wahweap Formation.

Biostratigraphy:

Age: Aquilian in age, Lower Campanian Stage, Senonian subepoch, Upper Gulf epoch, Late Cretaceous.

Material: LUM3 lacking stylar cusp A.

Hypodium:

MNA V4532: Partial RUM3.

MNA V4545: RLM1?

MNA V4557: RLM2.

MNA V4558: LUM1 with paracone broken.

MNA V4563: RLM4 with trigonid cusps broken.

 


Locality: OMNH locality V8, Garfield County, Utah.

Horizon: Lower Middle Wahweap Formation.

Biostratigraphy:

Age: Aquilian in age, Lower Campanian Stage, Senonian subepoch, Upper Gulf epoch, Late Cretaceous.

Material:

MNA V4520: Left LM4.

MNA V4592: RLM1?

MNA V4598: LUM1 lacking the posterior part of the stylar shelf.

MNA V4623: LLM3?

OMNH 20706: RLM2 with trigonid cusps broken.

 


Locality: OMNH locality V2, Garfield County, Utah.

Horizon: Lower Wahweap Formation.

Biostratigraphy:

Age: Aquilian in age, Lower Campanian Stage, Senonian subepoch, Upper Gulf epoch, Late Cretaceous.

Material:

OMNH 20132: RUM3 lacking anterior part of stylar shelf.

OMNH 20137: Broken LLM3?

 

 

Locality: OMNH locality V49, Garfield County, Utah.

Horizon: Middle Wahweap Formation.

Biostratigraphy:

Age: Aquilian in age, Lower Campanian Stage, Senonian subepoch, Upper Gulf epoch, Late Cretaceous.

Material:

OMNH 20968: LUM2 lacking stylar cusp.

 

DAVIS, CIFELLI, & COHEN, 2016

Locality: OMNH V1409, Toole County, Montana.

Horizon: Deadhorse Coulee Member, Eagle Formation.

Biostratigraphy:

Age: Santonian Stage, Senonian  Subepoch, Gulf Epoch, Late Cretaceous.

Material:

OMNH 66379: Left M2.

OMNH 66357: Left M3.

OMNH 66358: Left M3 missing protoconal region.

 

_____________________________________________________________________________________
Species: creber (FOX, 1971) JOHNSON, 1996
Etymology:
= Alphadon creber FOX, 1971
= Protalphadon creber (FOX, 1971) JOHNSON, 1996

Holotype: UA 5545

Locality: UA-MR-6, Verdigris Coulee, approximately 18 miles east of the village of Milk River, Warner County, Alberta Province, Canada.

Horizon: Upper Milk River Formation.

Biostratigraphy:

Age: Aquilian age, Lower Campanian Stage, Aquilian in age, Senonian subepoch, Upper Gulf epoch, Late Cretaceous.

Material: RUM3.

Referred material:

Localities: UA-MR-4, 6, 8, Verdigris Coulee, approximately 18 miles east of the village of Milk River, Warner County, Alberta Province, Canada.

Horizon: Upper Milk River Formation.

Biostratigraphy:

Age: Aquilian age, Lower Campanian Stage, Aquilian in age, Senonian subepoch, Upper Gulf epoch, Late Cretaceous.

Material:

UA 5533: LUM1.

UA 5554: RUM1.

UA 5555: RUM1.

UA 5541: RUM2.

UA 5558: RUM2.

UA 5556: RUM3.

UA 5529, 5542, 5543, 5557, 5583: LUM3.

 


EATON & CIFELLI, 1988

Locality: Kaiparowits Plateau, Southern Utah.

Horizon: Lower Kaiparowits Formation, Late Cretaceous.

Biostratigraphy:

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

Material:

Number: Not given:

 

EATON, & CIFELLI, 2013

Locality: Locality 77, Grand Staircase,  Kane County, Utah.

Horizon: Wahweap Formation.

Biostratigraphy:

Age: Aquilian in age, Lower Campanian Stage, Senonian subepoch, Upper Gulf epoch, Late Cretaceous.

Material:

UMNH VP 7560 (BRCA 5667): RM2 or 3.

 

Locality: Locality 83, Grand Staircase,  Kane County, Utah.

Horizon: Wahweap Formation.

Biostratigraphy:

Age: Aquilian in age, Lower Campanian Stage, Senonian subepoch, Upper Gulf epoch, Late Cretaceous.

Material:

UMNH VP 17688: LM2.

 

Locality: Locality 1073, Grand Staircase,  Kane County, Utah.

Horizon: Wahweap Formation.

Biostratigraphy:

Age: Aquilian in age, Lower Campanian Stage, Senonian subepoch, Upper Gulf epoch, Late Cretaceous.

Material:

MNA V6418: Incomplete RM3.

 

 

_____________________________________________________________________________________

Species: creberforme (CIFELLI, 1990) JOHNSON, 1996
Etymology:
= Protalphadon creberforme CIFELLI, 1990

Holotype: OMNH 20667

Locality: OMNH locality V8, Garfield County, Utah.

Horizon: Middle Wahweap Formation.

Biostratigraphy:

Age: Aquilian in age, Lower Campanian Stage, Senonian subepoch, Upper Gulf epoch, Late Cretaceous.

Material: Labial half of left UM2.

Hypodigm


Locality: OMNH locality V14, Garfield County, Utah.

Horizon: Middle Wahweap Formation.

Biostratigraphy:

Age: Aquilian in age, Lower Campanian Stage, Senonian subepoch, Upper Gulf epoch, Late Cretaceous.

Material:

MNA V4561: Libal half of left UM2 or 3 lacking the lingual part of the stylar shelf.