-
Craspeditidae a
subfamily in the Polyptychitidae. The s**** of
Kachpurites is
subinvolute with a
rounded section and
bears low,
close spaced,
moderately sinuous...
- a very
small ammonite. Its s****
varied in
shape from
subevolute to
subinvolute. It was narrow, smooth, and had a
rounded venter.
Despite belonging to...
-
Newmarracarroceras is an
ammonite from the
early middle Jur****ic with a
ribbed subinvolute s**** with a keel
running along the venter, or
outer rim. The umbilicus...
-
stage at the end of the Devonian. Its s**** is
extremely compressed,
subinvolute to
subevolute with an open umbilicus.
Sides are
always flat,
outer rim...
-
Puzosia (Bhimaites) is a
subgenus of
desmoceratid ammonites with a
subinvolute,
mostly smooth, high
whorled s**** with
convex or flat
sides and frequent...
-
perisphictacean ammonite genus from the
Lower Cretaceous of Russia. The s**** is
subinvolute and co****ly ribbed; ribs
bifurcate or
trifurcate mid or low on the flanks...
- Australia, India, Iraq, and in the
United States. The s**** of
Haericeras is
subinvolute with the
outer whorl covering much of the inner, but
leaving part of...
-
tenuis Haas 1942 The s**** of
Puzosia is
basically discoidal,
evolute to
subinvolute, with a wide umbiicaus.
Sides bear
close spaced sinuous ribs, periodically...
