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Spirula spirula is a
species of deep-water squid-like
cephalopod mollusk. It is the only
extant member of the
genus Spirula, the
family Spirulidae, and...
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mineralized coleoids (
Spirula, Sepia, and Metasepia) as a clade; however,
others do
recover this more parsimonious-seeming clade, with
Spirula as a
sister group...
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Spirulida is an
order of
cephalopods comprising one
extant species (
Spirula spirula) and
several extinct taxa.
Oldest representative: Carboniferous, though...
- gastropods, but it is also
found in s****ed
cephalopods including Nautilus,
Spirula and the
large extinct subclass of
cephalopods known as the ammonites. A...
- and
seabed Cephalopoda : 343 squid, octopuses, cuttlefish, nautiluses,
Spirula, belemnites†, ammonites† 900
marine Scaphopoda : 403–7 tusk s**** 500...
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Daronia spirula is a
species of land snail, a
gastropod mollusc in the
family Neocyclotidae.
Originally named Cyclostrema spirula, the
combination was...
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Mastigoteuthis glaukopis Mastigoteuthidae Onykia ingens Onychoteuthidae Semirossia tenera Sepiolidae Spirula spirula Spirulidae Todarodes pacificus Ommastrephidae...
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polyplacophorans (or chitons), and
cephalopods (such as
nautilus and
spirula).
These s**** are very
often the most
commonly encountered, both in the...
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modified internal s****,
which is
porous and is made of aragonite.
Except for
spirula, they are the only
coleoid cephalopods with a s**** with a phragmocone...
- A
spirula spirula squid...
