- subgenera.
Turrilites has
three subgenera.
Turrilites (
Turrilites) Lamarck, 1801
Turrilites (
Turrilites)
acutus P****y, 1832
Turrilites (
Turrilites) costatus...
-
Turrilites (
Turrilites)
costatus is a
species of
helically coiled ammonoid cephalopod, from the
lower part of the
Upper Cretaceous (Cenomanian). The s****...
- Cretaceous,
included in the Turrilitidae. Its type is
Turrilites bergeri Mariella resembles Turrilites in
general form. The s**** is asymmetric,
closely wound...
- the straight-s****ed
Baculites and Sciponoceras; the
helically coiled Turrilites; and the
bizarre Nipponites,
which looked more like a ball of
string than...
- (in two dimensions),
similar in
appearance to some
gastropods (e.g.,
Turrilites and Bostrychoceras). Some species' s**** are even
initially uncoiled...
-
Cunningtoniceras inerme zone
Acanthoceras rhotomagense zone (=
Turrilites costatus and
Turrilites acutus zones)
Acanthoceras jukesbrownei zone
Calycoceras naviculare...
- others, such as the
eponymous Turrilites, are
believed to have been bottom-dwellers. The name of the type
genus Turrilites is a
hybrid formation based on...
-
Heteroceras simplicostatum Whitfield, 1902
Nostoceras (Didymoceras)
nebrascense (M**** and Hayden, 1856)
Turrilites nebrascensis (M**** and Hayden, 1856)...
- helically-coiled
juvenile morphology of
Hamites into adulthood.
Baculites Scaphites Turrilites Szives, O.; Monks, N. (2002). "Heteromorphs of the Tata
Limestone Formation...
- this view is not
accepted by most authors. Some, such as the
eponymous Turrilites,
coiled helically, like an
auger s****,
while others, such as Hamites...
