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- Skeleton (2955 bytes)
7: ...iameter of the shell is enlarged without altering its shape. On the other hand, arthropods shed their...
9: ... a skeleton consisting entirely of cartilage and without any calcified bones at all, for example [[sha...
11: ...unding the fluid-filled pouch, creating pressure within the pouch that causes movement. Animals such ... - Conch (4541 bytes)
5: {{Taxobox_phylum_entry | taxon = [[Mollusca]]}}
17: ...more specifically, a marine [[gastropod]]. Still, it should be noted that many other gastropods have c...
21: ...national trade is heavily restricted.[http://www.cites.org/eng/app/appendices.shtml]
26: ...d lip on their shells upon reaching [[sexual maturity]].
31: ...ither raw, as in [[salad]]s, or cooked, as in [[fritter]]s, [[chowder]]s, [[gumbo]]s, and burgers. - Cretaceous (7391 bytes)
6: ...rtebrate]]s) found in the upper Cretaceous of [[Britain]] and adjacent continental [[Europe]].
57: ...then started to recede, leaving thick marine deposits sandwiched between [[coal]] beds.
63: ...nued to thrive, although other taxa like [[Bennettitales]] died out before the end of the period.
69: ...t as the Cretaceous proceeded faced growing competition from the [[adaptive radiation]] of [[bird]]s, ...
71: ...types of the group [[maniraptor]]a, which is transitional between dinosaurs and birds, and are remarka... - Animal (16429 bytes)
46: [[Mollusca]] (mollusks)<br>
51: ...e plural, and ultimately from ''anima'', meaning vital breath or soul.
55: ...tive chamber, with one or two openings. Animals with this sort of organization are called metazoans, ...
57: ... shells, bones, and spicules. During development it forms a relatively flexible framework upon which ...
63: ...rthenogenesis]], where fertile eggs are produced without mating, or in some cases through fragmentatio... - Cephalopod (4875 bytes)
5: {{Taxobox_phylum_entry | taxon = [[Mollusca]]}}
6: ... | taxon = '''Cephalopoda'''}}<br>{{Taxobox_authority | author = [[Georges Cuvier|Cuvier]] | date = [[...
20: ... the [[ammonite]]s and [[Belemnoidea]], the belemnites.
22: ...opod [[Mantle (mollusc)|mantle]] have been a favorite experimental material of [[Neurophysiology|neuro...
24: ... direction can be controlled somewhat by pointing it in different directions. - Mussel (4840 bytes)
9: {{Taxobox_phylum_entry | taxon = [[Mollusca]]}}
17: ...erent [[subclass]]es, despite considerable similarities in appearance.
21: ...rnal shell is composed of two valves that protect it from predators and desiccation. Protruding from a...
23: ...read that it very tough and secures the mussel to its substrate.
26: ...]]s for cilliary-mucus feeding. The waste water exits out through the excurrent siphon. The labial pal... - Snail (3838 bytes)
5: {{Taxobox_phylum_entry | taxon = [[Mollusca|Mollusca]]}}
10: ...] belong to the group [[Pulmonata]], while those with gills belong to the [[Paraphyletic]] group.
12: == Habitat ==
14: ..., marine, and terrestrial environments. The majority of the world's snails live in the oceans and new...
22: ...gg]]s. Prolific breeders, snails exchange sperm with one another to [[fertilize]] their eggs. Each b... - Octopus (12952 bytes)
5: {{Taxobox_phylum_entry | taxon = [[Mollusca]]}}
9: ...try | taxon = '''Octopoda'''}}<br>{{Taxobox_authority | author = [[William Elford Leach|Leach]] | date...
15: ...[order (biology)|order]] '''Octopoda''' that inhabits many diverse regions of the [[ocean]], especiall...
17: ...ve two fins and an internal shell, making them a little less flexible in being able to squeeze into sm...
19: ...hly flexible bodies with their color changing ability to accurately mimic other, more dangerous animal... - Squid (6229 bytes)
9: ...try | taxon = '''Teuthida'''}}<br>{{Taxobox_authority | author = [[A. Naef]] | date = [[1916]]b}}
16: ... often known by the name '''calamari''', from the Italian word for these animals.
18: ...order Octopoda) for total number of [[species]], with 298 classified into 28 families.
22: ...d is equipped with a sharp horny beak made of [[chitin]], used to kill and tear prey into manageable p...
28: ... squids are featured in literature and folklore, with a strongly frightening connotation. - Cephalopods (4509 bytes)
5: {{Taxobox_phylum_entry | taxon = [[Mollusca]]}}
6: ... | taxon = '''Cephalopoda'''}}<br>{{Taxobox_authority | author = [[Georges Cuvier|Cuvier]] | date = [[...
20: ... the [[ammonite]]s and [[Belemnoidea]], the belemnites.
22: ...opod [[Mantle (mollusc)|mantle]] have been a favorite experimental material of [[Neurophysiology|neuro...
24: ... direction can be controlled somewhat by pointing it in different directions. - Giant Squids (7570 bytes)
5: {{Taxobox_phylum_entry | taxon = [[Mollusca]]}}
10: ...taxon = '''Architeuthidae'''}}<br>{{Taxobox_authority | author = [[G. Pfeffer|Pfeffer]] | date = [[190...
11: ...xon = '''''Architeuthis'''''}}<br>{{Taxobox_authority | author = [[Japetus Steenstrup|Steenstrup]] | d...
14: ''[[Atlantic Giant Squid|Architeuthis dux]]''<br>
15: ''[[Architeuthis hartingii]]''<br> - Marine Life (10377 bytes)
1: ...life is spent only (or mainly) in the water, thus its classification is based on the [[environment]] r...
4: ...nkton as small as 0.02 micrometers, and together with [[phytoplankton]], hugely important as the [[pri...
6: ...neath the surface of the ocean. Along the way, habitats such as [[coral reef]]s, [[kelp forest]]s, [[t...
8: ... times the habitable volume of the terrestrial habitats on Earth.
10: ...of energy through ecosystems is also growing, despite large areas beneath the surface of the ocean rem... - Sea Slugs (4331 bytes)
6: {{Taxobox_phylum_entry | taxon = [[Mollusca]]}}
26: ...f [[Gastropoda |gastropods]], within the phylum [[Mollusca]], but they are now treated as an order.
28: ...behind the heart, from which the subclass derives its name ([[Greek language|Greek]] ''opistho-'', beh...
30: ...can find the rhinophores, olfactory organs often with complex forms. The middle part of the foot is th...
32: ... hard to study, because their presence is so transitory, turning up, sometimes in very large numbers, ... - Slugs (3980 bytes)
6: {{Taxobox_phylum_entry | taxon = [[Mollusca]]}}
14: ...orm-like, and so show little external evidence of it. This same basic design developed independently ...
16: ...ion. The slug moves by rythmic muscular action of its ''foot''.
18: ...t using a [[radula]], a rough, tongue-like organ with many tiny tooth-like denticles.
26: Mucus is very important to slugs as it helps them move around, and contains fibres - Snails (3374 bytes)
5: {{Taxobox_phylum_entry | taxon = [[Mollusca|Mollusca]]}}
10: ...] belong to the group [[Pulmonata]], while those with gills belong to the [[Paraphyletic]] group.
12: == Habitat ==
14: ..., marine, and terrestrial environments. The majority of the world's snails live in the oceans and new...
22: ...gg]]s. Prolific breeders, snails exchange sperm with one another to [[fertilize]] their eggs. Each b... - Squids (6229 bytes)
9: ...try | taxon = '''Teuthida'''}}<br>{{Taxobox_authority | author = [[A. Naef]] | date = [[1916]]b}}
16: ... often known by the name '''calamari''', from the Italian word for these animals.
18: ...order Octopoda) for total number of [[species]], with 298 classified into 28 families.
22: ...d is equipped with a sharp horny beak made of [[chitin]], used to kill and tear prey into manageable p...
28: ... squids are featured in literature and folklore, with a strongly frightening connotation.
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