- the
placement of the
genus Sphaerotholus within the Pachycephalosauria. They
recovered all
proposed species of
Sphaerotholus as a
monophyletic group of...
- Wannanosaurus, Goyocephale, Stegoceras, Homalocephale, Tylocephale,
Sphaerotholus, and Prenocephale.
Within the
tribe Pachycephalosaurini, Pachycephalosaurus...
- ****van
considered Foraminacephale, "Prenocephale" edmontonensis, and
Sphaerotholus goodwini to form a
clade with the
Asian taxon P. prenes. He considered...
- †Goyocephale †Homalocephale †Platytholus †Prenocephale †Sinocephale †
Sphaerotholus †Tylocephale †Pachycephalosaurini ****van, 2003 †Alaskacephale †Pachycephalosaurus...
-
Sphaerotholus edmontonensis Sphaerotholus goodwini Sphaerotholus buchholtzae Pachycephalosaurus Alaskacephale...
- three-quarters the size of Prenocephale, and
about the same size as
Sphaerotholus and Foraminacephale. The
latter measured 1.5
metres (4.9 ft) long and...
-
derived pachycephalosaurids Stygimoloch, Dracorex, Pachycephalosaurus,
Sphaerotholus, and an
undescribed specimen from
North Dakota. The
first two might...
-
Sphaerotholus buchholtzae Sphaerotholus goodwini...
-
considered a
juvenile pachycephalosaur of
uncertain species (though
perhaps Sphaerotholus goodwini). In 2006, ****van and
Spencer G.
Lucas considered it a juvenile...
- of Struthiomimus, the bone-head
pachycephalosaurids Stegoceras, and
Sphaerotholus edmontonensis, the
ornithopod Parksosaurus warreni, the hadrosaurids...
