-
containing actinosiphonate deposits within.
Oonoceras is
similar except for
having a
generally stronger curvature and a simpler, non-
actinosiphonate siphuncle...
-
flared necks,
thickened rings, and well
developed radial internal actinosiphonate deposits. In
general form
Kindleoceras is
similar to Manitoulinoceras...
-
strongly contracted T-shaped aperture;
ventral siphuncle containing actinosiphonate deposits, and two rows of
spines on
either side.
Adelphoceras is included...
- s**** with a
marginal siphuncle that
contains discrete,
irregular actinosiphonate deposits. The
Diestoceratidae contains five
known genera. They are:...
-
cyrochoanitic septal necks and internal,
longitudinal blade-like
actinosiphonate deposits. All
three come from the
Middle Devonian of N Am, specifically...
- a
siphuncle commonly composed of
concave segments and
occupied by
actinosiphonate deposits. Some ten
genera have been
described which lived during the...
- life, with broad,
slightly inflated segments and continuous, radial,
actinosiphonate, deposits.
While Actinomorpha is a
member of the Oncocerida; Actinoceras...
- are transverse,
close spaced; the
siphuncle large, subcentral, with
actinosiphonate deposits. Cyrtogomphus, Lysagoroceras, and
Poterioceras are
among related...
-
which the
siphuncle is
generally large, ventral, and with
lamellar actinosiphonate deposits (Flower 1950,
Sweet 1964)
Jovelaniids have a
range that extends...
- gyrocones, brevicones, and torticones. that tend to
develop vestigial actinosiphonate deposits and
subtriangular transverse sections. The Brevicoceratidae...
