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Information about Flipper (anatomy)

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Lampanyctodes hectoris
(1) - operculum (gill cover), (2) - lateral line, (3) - dorsal fin, (4) - fat fin, (5) - caudal peduncle, (6) - caudal fin, (7) - anal fin, (8) - photophores, (9) - pelvic fins (paired), (10) - pectoral fins (paired)


A flipper is a digitless, typically flat limb evolved for movement through water. Various creatures have evolved flippers, for example most fish (although for fish the usual term is fin), as well as certain mammals (whales, pinnipeds), reptiles (turtles), and birds (penguins).

Flippers sometimes occur in non-flippered species as the result of a birth defect. For example, the morning-sickness drug thalidomide caused some infants to be born with flipper-like limbs.
Limb can have many meanings.
  • Limb Music - a record label.
  • LIMB - acronym Look In (your) Mail Box
  • from the Old English lim:
  • Limb (anatomy), a limb

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FIN may refer to
  • the ISO 3166-1 alpha-3-code for Finland.
  • a Financial Accounting Standards Board FASB Interpretation Number.
  • Federazione Italiana Nuoto, the Italian Swimming Federation.
  • A FIN packet in the Transmission Control Protocol (TCP).

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Mammalia
Linnaeus, 1758

Subclasses & Infraclasses
  • Subclass †Allotheria*
  • Subclass Prototheria
  • Subclass Theria

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whale can refer to all cetaceans, to just the larger ones, or only to members of particular families within the order Cetacea. The last definition is the one followed here. Whales are those cetaceans which are neither dolphins (i.e.
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Pinnipeds ("fin-feet", lit. "winged feet") are marine mammals belonging to the former biological suborder Pinnipedia (sometimes now a superfamily) of the order Carnivora. The pinnipeds now fall within the suborder Caniformia and comprise the families Odobenidae (walruses),
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Sauropsida*
Goodrich, 1916

Subclasses
  • Anapsida
  • Diapsida
Synonyms
  • Reptilia Laurenti, 1768
Reptiles are tetrapods and amniotes, animals whose embryos are surrounded by an amniotic membrane, and members of the class
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Testudines
Linnaeus, 1758

Diversity
ca. 300 species in 14 extant families.

blue: sea turtles, black: land turtles


Suborders

Cryptodira
Pleurodira
See text for families.
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Aves
Linnaeus, 1758

Orders

About two dozen - see section below

Birds (class Aves) are bipedal, warm-blooded, egg-laying vertebrate animals.
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Sphenisciformes
Sharpe, 1891

Family: Spheniscidae
Bonaparte, 1831

Modern genera
  • Aptenodytes
  • Eudyptes
  • Eudyptula
  • Megadyptes
  • Pygoscelis

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A congenital disorder is any medical condition that is present at birth. However, a congenital disorder can be recognized before birth (prenatally), at birth, years later, or never. The term congenital does not imply or exclude a genetic cause.
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Thalidomide is a sedative, hypnotic, and multiple myeloma medication. The drug is a potent teratogen in rats, rabbits, non-human primates and humans. [1] Thalidomide was developed by German pharmaceutical company Grünenthal.
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