- America,
where it is widespread.
Campbelloceras was
named by
Ulrich and
Foerste in 1936. The s**** of
Campbelloceras has a
circular whorl section, only...
-
intermediary as in Tarphyceras, or
subventral as in
Campbelloceras.
Cross sections vary.
Tarphyceras and
Campbelloceras are rounded.
Centrotarphyceras is subquadrate...
- the
Lower Ord (U Canad) of
North America. It
differs from
Campbelloceras in that
Campbelloceras is only
slightly impressed, from
Centrotarphyceras in that...
- Tarphyceratidae;
Plectoceras with its
subventral siphuncle possibly from
Campbelloceras,
Barrandeoceras with its
subcentral siphuncle possibly from Centrotarphyceras...
-
therefore the Plectoceratidae, is
derived from the
Tarphyceratid genus Campbelloceras while Barrandeoceras, and
therefore the Barrandeoceratidae, is derived...
- and Estonioceras, are
loosely coiled and gyroconic; others, such as
Campbelloceras, Tarphyceras, and Trocholites, are
tightly coiled, but
evolute with...
-
Lower Alaskoceras Moreauoceras Pilotoceras Shumardoceras Pycnoceras Campbelloceras Aphetoceras Upper Aethoceras Bentoceras Centrotarphyceras Clytoceras...
- †Calchasiceras †Calhounoceras †Callaionautilus †Calocyrtoceras †Cameroceras †
Campbelloceras †Campendoceras †Campyloceras †Capriocornites †Carbactinoceras †Carinonautilus...
-
dorsal siphuncle,
Curtoceras is
somewhat similar to the
tarphyceratid Campbelloceras List of
nautiloids Furnish, W.M. and Glenister,
Brian F 1964; Nautiloidea...
- †Cambrooistodus
minutus †Cameroceras †Cameroceras
curvatum †
Campbelloceras †
Campbelloceras hyatti †
Campbelloceras virgini**** †C****inoceras †C****inoceras explanator...
