- were
thought to use two of
their arms as sails. The arm
crown of
modern nautilids (genera
Nautilus and Allonautilus) is very
distinct in
comparison to coleoids...
-
Carinonautilus is a
genus of extinct,
Middle Cretaceous nautilid with a very involute,
compressed s**** in
which the
whorl section is
higher than wide...
-
swallowed whole, so the
mouth cavity must be larger.
Externally s****ed
nautilids (Nautilus and Allonautilus) have on the
order of 90 finger-like appendages...
- Naticopsis.
Nautiloid cephalopods are
represented by
tightly coiled nautilids, with straight-s****ed and curved-s****ed
forms becoming increasingly...
- of
Mississippian to
Lower Permian nautiloid cephalopods included in the
nautilid superfamily Aipocerataceae along with
genera like Aipoceras, Asymptoceras...
- For the rest,
nautilids adapted the
standard planispiral s**** form,
although not all were as
tightly coiled as the
modern nautilids (Teichert 1988)...
-
became increasingly tightly coiled,
while both
numbers and
variety of non-
nautilid species continued to
decrease throughout the
Carboniferous and Permian...
- is a
genus of
trochoidally coiled nautiloid cephalopods placed in the
nautilid family Rutoceratidae.
These cephalopod lived i in the
Eifelian age of the...
-
Acanthonautilus is an
extinct genus in the
nautilid family Solenochildae (Aipocerataceae) from the
Upper Mississippian of
North America and equivalent...
-
Thuringionautilus is a
genus of large,
moderately involute,
nautiloids from the
nautilid family Tainoceratidae. The
whorl section is subquadrate,
flanks slightly...
