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Spirulida is an
order of
cephalopods comprising one
extant species (Spirula spirula) and
several extinct taxa.
Oldest representative: Carboniferous, though...
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squid of
order Sepiolida and the ram's horn
squid of the
monotypic order Spirulida. The
vampire squid (Vampyroteuthis infernalis), however, is more closely...
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extant member of the
genus Spirula, the
family Spirulidae, and the
order Spirulida.
Because of the
shape of its
internal s****, it is
commonly known as the...
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neritic squid Sepiida – cuttlefish, pygmy,
bobtail and
bottletail squid Spirulida – ram's horn
squid see Boletzkyida,
Belemnite Young, R. E., Vecchione...
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Order Sepiida – cuttlefish, pygmy,
bobtail and
bottletail squid Order Spirulida – ram's horn
squid Superorder Octopodiformes Family †Trachyteuthididae...
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Cephalopod embryonic s****. A)
Ammonoidea (B)
Sepiida (C)
Belemnoidea (D)
Spirulida (E)
Orthocerida (F)
Nautilida (G)
Oncocerida (H)
Pseudorthocerida (I)...
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Superorder Decapodiformes (also
known as
Decabrachia or Decembranchiata)
Order Spirulida: Ram's horn
squid Order Sepiida:
cuttlefish Order Sepiolida: pygmy, bobtail...
- Coleoidea: squid, octopus,
cuttlefish Superorder Decapodiformes Order Spirulida: ram's horn
squid Order Sepiida:
cuttlefish Order Sepiolida:
bobtail squid...
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Order Sepiida - cuttlefish, pygmy,
bobtail and
bottletail squid Order Spirulida - ram's horn
squid Superorder Octopodiformes Family †Trachyteuthididae...
- (female) Reid &
Jereb (2005:190)
Males grow to 5.1 cm in
mantle length.
Spirulida (spirula) –
single extant species Species Maximum mantle length References...
