Species: intricatus CLEMENS, 1966
Etymology:

Holotype: UCMP 48047

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.

Horizon: Lance Formation.

Biostratigraphy:

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

Material: Right UM3.

Referred material:

UMVP 1593: Fragment of maxilla with upper P4, And UM1-3.

AMNH 58737: Fragment of maxilla with UM2-3.

AMNH 58736: Fragment of mandible with LM1-4.

AMNH 57960: Fragment of mandible with LM3-4.

Numbers: Not given: plus 8 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.

Horizon: Lance Formation.

Biostratigraphy:

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

Material:

UCMP 46414: Fragment of mandible with LM2-3.

Number: Not given: 2 isolated teeth.

 

Locality: V-5621, Cow Creek, site 1, anthills and talus found on and around outcrops of cross-stratified sandstone on the north side and near the upper end of a gully emptying into a northern tributary of Cow
Creek, Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material: Isolated teeth.

 

= Glasbius cf. G. intricatus WILLIAMSON, & WEIL, 2008

Locality: NMMNH Locality L-4005, San Juan Basin, New Mexico.

Note: More perecise information is on file at NMMNH.

Horizon: Naashoibito Member, Kirtland Formation.

Biostratigraphy:

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

Material:

NMMNH P-46380: A nearly complete right m1 or m2.

NMMNH P-46381: A right m4.

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Species: twitchelli ARCHIBALD, 1982
Etymology:

Holotype: UCMP 115853

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: RUM3

Referred material:

UCMP 117553: Worn maxillary fragment with UM2-3.

UCMP 117554: Worn Maxillary fragment with UM2-3.

UCMP 117569: Dentary fragments with LP1 and fragment of LP2.

UCMP 117570: LP2-3, LM1-2, fragment of LM3.

2 UM2, 3 UM3, 1 UM4, 1 LDP3, 4 LM1, 5 LM2, 2 LM3 and 1 LM4.

 

Locality: V73097, Brownie Butte, Garfield County, Montana.

Horizon: Hell Creek Formation.

Biostratigraphy:

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

Material:

PU 17286: Dentary fragment with LP3, LM1-3.

 

Locality: V72215, Baldy Butte, Garfield County, Montana.

Horizon: Hell Creek Formation.

Biostratigraphy:

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

Material:

UCMP 117540: Fragment of LM2 and LM3.

 

Locality: V74116, Baldy Butte SW-Blazing Saddle, Garfield County, Montana.

Horizon: Hell Creek Formation.

Biostratigraphy:

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

Material:

UCMP 117539: Fragment of LP3 and LM1-2.

 

Locality: V65127 and V70201, Garfield County, Montana.

Horizon: Hell Creek Formation.

Biostratigraphy:

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

Material:

UCMP 91728: Dentary fragment with LM2-4.

Numbers: Not given: 1 UM1, 3 UM2, 1 UM4 and 3 LM1.

 

 

Locality: V72212, Engdahl Anthills 1, Garfield County, Montana.

Horizon: Hell Creek Formation.

Biostratigraphy:

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

Material:

UCMP 108055:

 

Locality: V73077, Engdahl Anthills 3, Garfield County, Montana.

Horizon: Hell Creek Formation.

Biostratigraphy:

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

Material:

Number: Not given: LM1.

 

Locality: V73078, Engdahl Anthills 4, Garfield County, Montana.

Horizon: Hell Creek Formation.

Biostratigraphy:

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

Material:

Number: Not given: LM3.

 

BOYD, PERSON & BARNES, 2017

Locality: NDGS L226 (= PTRM V98027), Slope County, southwestern North Dakota.

Horizon: Hell Creek Formation.

Biostratigraphy:

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

Material:

NDGS 1793: Left maxilla with M2-3.

NDGS 1720: Left m2.

NDGS 1721: Left m2.

NDGS 1722: Left m3.

NDGS 1723: Right m3.

NDGS 1724: Right m3.

 

FOX, 1898

Locality: Wounded Knee local fauna, a roadcut along Rte. 37, approximately 34 km south of Shaunavon, Saskatchewan Province, Canada.

Horizon: Frenchman Formation.

Biostratigraphy:

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

Material:

UALVP 22725: LM2?

 

WILLIAMSON, WEIL & BECENTI, 2006

Locality: NMMNH L-4005, Bisti/De-Na-Zin Wilderness area, San Juan Basin, New Mexico.

Horizon: Base of the Naashoibito Member, Kirtland Formation.

Biostratigraphy:

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

Material:

NMMNH P-46380: Right m2 or m3.

NMMNH P-46381: Right m4.

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