-
Ammonite biozones Genus Species Date
Error +/-
Stage Prionocyclus hyatti 92.46 0.58
Middle Turonian Collignoniceras praecox - -
Middle Turonian Collignoniceras...
-
Neocardioceras was
proposed by Spath, 1926, for
ammonites "resembling
Prionocyclus M****,
except for the
Quenstedtoceras keel". Wright, 1957, subsequently...
-
ammonite Barroisiceras B.
onilahyense An
Collignoniceratidae ammonite Prionocyclus P.
germari An
Collignoniceratidae ammonite Subprionocyclus An Collignoniceratidae...
-
Preshumardites Presimoceras Pricella Prionites Prionoceras Prionocycloceras Prionocyclus Prionodoceras Proarcestes Proavites Probeloceras Procarnites Procerites...
- for
species †Podozamites †Podozamites
lanceolatus †
Prionocyclus †
Prionocyclus macombi †
Prionocyclus novimexic**** †Prognathodon †Prognathodon overtoni...
-
Collignonicerites Kennedy et al., 2001
Genus Prionocy****es Kennedy, 1988
Genus Prionocyclus M****, 1876
Genus Reesidites Wright & Matsumoto, 1954
Genus Subprionotropis...
- The
formation spans the
ammonite zones of
Collignoniceras woollgari,
Prionocyclus percarinatus, P. hyatti, and P. macombit,
indicating that the formation...
- †Prionochelys †Prionochelys
galeotergum – type
locality for
species †
Prionocyclus †
Prionocyclus hyatti †Prisca –
tentative report †Protocardia †Protocardia texana...
-
middle Turonian index fossil Inoceramus howelli which indicates the
Prionocyclus hyatti ammonite zone. A
variety of
invertebrate fossils have been found...
- †Priacodon
robustus – type
locality for
species †
Prionocyclus †
Prionocyclus germari †
Prionocyclus hyatti †
Prionocyclus novimexic**** †Prodesmodon – type locality...
