- 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...
-
Strionautilus is an
extinct nautilid cephalopod.
Fossils are
found in Late
Cretaceous marine strata of
Russia and India.
Paleobiology Database v t e...
-
Carinonautilus is a
genus of extinct,
Middle Cretaceous nautilid with a very involute,
compressed s**** in
which the
whorl section is
higher than wide...
- For the rest,
nautilids adapted the
standard planispiral s**** form,
although not all were as
tightly coiled as the
modern nautilids (Teichert 1988)...
- Naticopsis.
Nautiloid cephalopods are
represented by
tightly coiled nautilids, with straight-s****ed and curved-s****ed
forms becoming increasingly...
-
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...
-
Aturia is an
extinct genus of
Paleocene to
Miocene nautilids within Aturiidae, a
monotypic family,
established by
Campman in 1857 for
Aturia Bronn, 1838...
-
Cimomia is an
extinct genus of
nautilid cephalopods ranging from the
Early Cretaceous to Late
Oligocene of
North America, Asia, Australia,
South America...
- is a
genus of
trochoidally coiled nautiloid cephalopods placed in the
nautilid family Rutoceratidae.
These cephalopod lived i in the
Eifelian age of the...
-
became increasingly tightly coiled,
while both
numbers and
variety of non-
nautilid species continued to
decrease throughout the
Carboniferous and Permian...
