-
Ammonite biozones Genus Species Date
Error +/-
Stage Prionocyclus hyatti 92.46 0.58
Middle Turonian Collignoniceras praecox - -
Middle Turonian Collignoniceras...
- The
formation spans the
ammonite zones of
Collignoniceras woollgari,
Prionocyclus percarinatus, P. hyatti, and P. macombit,
indicating that the formation...
-
Collignonicerites Kennedy et al., 2001
Genus Prionocy****es Kennedy, 1988
Genus Prionocyclus M****, 1876
Genus Reesidites Wright & Matsumoto, 1954
Genus Subprionotropis...
- (Gryposaurus sp.)
Stegoceras sp.
Deinosuchus sp.
Mortoniceras Brancoceras Prionocyclus Coilopoceras Acanthoceras Acompsoceras Romaniceras Mammites Pseudothurmannia...
- †Postosuchus
kirkpatricki †Pravusuchus †Pravusuchus
hortus †
Prionocyclus †
Prionocyclus hyatti †
Prionocyclus percarinatus †Procolophonichnium †Prosalirus – type...
-
Neocardioceras was
proposed by Spath, 1926, for
ammonites "resembling
Prionocyclus M****,
except for the
Quenstedtoceras keel". Wright, 1957, subsequently...
-
Preshumardites Presimoceras Pricella Prionites Prionoceras Prionocycloceras Prionocyclus Prionodoceras Proarcestes Proavites Probeloceras Procarnites Procerites...
-
ammonite Barroisiceras B.
onilahyense An
Collignoniceratidae ammonite Prionocyclus P.
germari An
Collignoniceratidae ammonite Subprionocyclus An Collignoniceratidae...
- †Prionochelys †Prionochelys
galeotergum – type
locality for
species †
Prionocyclus †
Prionocyclus hyatti †Prisca –
tentative report †Protocardia †Protocardia texana...
- †Priacodon
robustus – type
locality for
species †
Prionocyclus †
Prionocyclus germari †
Prionocyclus hyatti †
Prionocyclus novimexic**** †Prodesmodon – type locality...
