Genus: Protalphadon CIFELLI, 1990
Etymology: Greek, protos, “first”, + Alphadon: First Alphadon.

Species: lulli (CLEMENS, 1966) CIFELLI, 1990
Etymology: In honor of Richard Swan Lull.
= Alphadon lulli CLEMENS, 1966

Holotype: UCMP 47047

Locality: UCMP V-5620, Lull Quarry, near the head of a tributary of Buck Creek, Powder River Basin, Niobrara County (Formerly Converse County), Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material: Fragmentary left maxilla with UM1-2, alveoli of UM3, parts of alveoli of UM4 and UP3.

Referred material:

UCMP 47475: Fragment of maxilla with UM2-3.

Number: Not given: plus 9 isolated teeth.

 


Locality: UCMP V-5620, Lull Quarry, near the head of a tributary of Buck Creek, Powder River Basin, Niobrara County (Formerly Converse County), Wyoming.

Locality: UCMP V-5711, Bushy Tailed Blowout, Quarry area includes the floor of a small blowout approximately 10 yards northwest of the highest point on the ridge forming the northeastern side of the blowouts of loc. V-5003, S 1/2, Sec. 20, T37N, R64W, Lance Creek, Powder River Basin, Niobrara County, Wyoming.

Locality: UCMP V-5815, Hatcher Number 2, western side of a cross-stratified sandstone erosional remnant near the center of a large blowout on the crest of a ridge, the distance form the nearest point on the road, approximately 150 yards south of the quarry, to the Johnson ranch is 0.4 miles, Eastern Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material:

UCMP 46882: Fragment of a right mandible with canine, LP2 and LM1-4.

UCMP 51366: Fragment of a right mandible with LP2, LP3 and fragment of
LM2.

Number: Not given: 8 teeth.

 

 

LILLEGRAVEN & MCKENNA 1986

Locality: Sunset to Dawn Two (UW V-81076), NE 1/4 of SW 1/4 of Sec 1/4 of sec 27, T48N, R91W, Bighorn Basin, Washakie County, Wyoming.

Horizon: "Mesaverde" Formation.

Biostratigraphy:

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

Material:

UW 17078: UM3.

 

 

Locality: False Rocks (UW V-81006 = UCMP V-81101 and within general area of UCMP V-5833), Below top of southwestern slop of hill 6450 (on Garfield Peak Quadrangle, 1959, 7.5 min topographic map) in NE 1/4 of SW 1/4 of SW 1/4 of SE 1/4 of SW 1/4 of sec 4, T33N, R87W, Wind River Basin, Natrona County, Wyoming.

Horizon: "Mesaverde" Formation.

Biostratigraphy:

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

Material:

UCMP 125349: Fragmentary right UM3.

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Species: foxi JOHNSON, 1996
Etymology: In honor of Dr. R. C. Fox, for his contributions to the study of Late Cretaceous marsupials.

Holotype: UCMP 109031

Locality: V73087, Flat Creek 5, Garfield County, Montana.

Horizon: Hell Creek Formation.

Biostratigraphy:

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

Material: RM3.

Referred material:

UCMP 117695, 117696: ?M3.
Note: Referred material from Alphadon lulli (ARCHIBALD, 1982)