Re: Stygimoloch spinifer

[Dinogeorge@aol.com]

In a message dated 97-03-18 14:34:15 EST, dino@revelation.unomaha.edu (John
Schneiderman) writes:

<< How many specimens are known that are referred to _Stygimoloch_?
 Does the pachycephalosaur found recently (1995?) in (Montana?) belong to
 this genus? >>

>From Tracy Ford's latest files (I hope he doesn't mind my sending them
through the list like this!):

Genus: Stygimoloch GALTON & SUES, 1983
= Stenotholus GIFFIN, GABRIEL & JOHNSON, 1988

Species: spinifer GALTON & SUES, 1983
Holotype: UCMP 119433

Locality: Harbicht Hill South No. 2, UCMP locality No. V-73100, NE 1/4, SW.
1/4, sec. 32, tp. 25N, RGE. 43E, McCone County, Montana.

Horizon: Lance Formation, (Hell Creek), Maestrichtian, Late Cretaceous.

Material: Part of a left squamosal.

Referred material:

YPM 335

Locality: 25 miles (40 km) above the mouth of Lance Creek, Niobrara County,
Wyoming.

Horizon: Lance Formation, Maestrichtian, Late Cretaceous.

Material: The postero-external corner of the left squamosal of immature
individual.
____          ____          ____          ____          ____          ____

GABRIEL & BERGAHUS, 1988

Milwaukee Public Museum

Locality:

Horizon:

Martial: Squamosal, skull with horn core elements, skull.
____          ____          ____          ____          ____          ____

GOODWIN, 1989

Locality: Garfield County, Montana.

Horizon: Hell Creek Formation, Maestrichtian, Late Cretaceous.

Material:

UCMP 131163: A well preserved skull.

UCMP 128383: A partial done found with associated squamosal pikes, at least
12 caudal vertebrae and numerous fragments of thickened ossified tendons.

Number: Not given: A partial skull of a juvenile.
____          ____          ____          ____          ____          ____

GOODWIN & JOHNSON, 1995

Locality: North Dakota.

Horizon: Hell Creek Formation, Maastrichtian, Late Cretaceous.

Material:

MPM 8111: Skull.

2 additional skulls, 2 frontoparietal domes and associated postrcranial
material.
____          ____          ____          ____          ____          ____

RUSSELL, 1995

Number:

Locality: "Sandy Quarry", near Buffalo, South Dakota.

Horizon: Hell Creek Formation, Maastrichtian, Late Cretaceous.

Material: Nearly complete skull missing skull cap, and fragmentary skeleton.
____          ____          ____          ____          ____          ____

= Stenotholus kohleri, GIFFIN, GABRIEL & JOHNSON, 1987
= Stenotholus kohlerorum GIFFIN, GABRIEL & JOHNSON, 1987
Holotype: Milwaukee Public Museum MPM 7111

Locality: MPM locality 3850, McCone County, Montana.

Horizon: Middle Hell Creek Formation, Maestrichtian, Late Cretaceous.

Material: A well-preserved frontoparietal dome with partially preserved
occipital and endocranial regions with an endocast.