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Aptenodytes
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Emperor Penguins
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Sphenisciformes
Family: Spheniscidae
Genus: Aptenodytes
Miller,JF, 1778
Species

Aptenodytes patagonicus
Aptenodytes forsteri
Aptenodytes ridgeni (fossil)

File:Aptenodytes.png

This article contains made-up species!
This article contains made-up species not found on Earth. They will be highlighted in pink.


The genus Aptenodytes (from the Ancient Greek a/α 'without' pteno-/πτηνο- 'feather' or 'wing' and dytes/δυτης 'diver')[1] contains three extant species of penguins.

Taxonomy

Combined morphological and molecular data [2] have shown the genus Aptenodytes to be basal to all other living penguins, that is, the genus split off from a branch which led to all other species. DNA evidence suggests this split occurred around 40 million years ago.[3] This had been foreshadowed by an attempt to classify penguins by their behaviour, which also predicted the genus' basal nature.[4]

Species

Two monotypic species extant:[5]

Aptenodytes
Common and binomial names[5] Image Description Range
Emperor Penguins
(Aptenodytes forsteri)
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122 cm (4 ft) tall, weighing 22–37 kg (48.5–82 lb), the adult has deep black dorsal feathers, covering the head, chin, throat, back, dorsal part of the flippers, and tail. The underparts of the wings and belly are white, becoming pale yellow in the upper breast, ear patches are bright yellow. The upper mandible is black, and the lower mandible can be pink, orange or lilac. Males and females are similar in size and colouration. Circumpolar distribution in the Antarctic between the 66° and 77° S. It almost always breeds on stable pack ice near the coast and up to 18 km (11 mi) offshore.[6]
King Penguins
(Aptenodytes patagonicus)
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90 cm (3 ft) tall, weighing 11 to 16 kg (24 to 35 lb), The upperparts are steel blue-grey, darkening to black on the head, the belly is white fading to orange on the upper breast with bright orange ear patches. The black bill is long and slender, and curved downwards. The lower mandible bears a striking pink or orange-coloured mandibular plate Breeds on the subantarctic islands between 45° and 55° S at the northern reaches of Antarctica, as well as Tierra del Fuego, the Falkland Islands, and other temperate islands of the region.
Yellow-headed Penguin
(Aptenodytes orocephalus)
Yellow-headed penguin
Found in Devonshire and Wellbrook Island.

References

  1. ^ Liddell, Henry George and Robert Scott (1980). A Greek-English Lexicon (Abridged Edition). United Kingdom: Oxford University Press. ISBN 0-19-910207-4. 
  2. ^ Ksepka, D. T. B., Sara; Giannini, Norberto P; (2006). "The phylogeny of the living and fossil Sphenisciformes (penguins)". Cladistics. 22 (5): 412–441. doi:10.1111/j.1096-0031.2006.00116.x. 
  3. ^ Baker AJ, Pereira SL, Haddrath OP, Edge KA (2006). "Multiple gene evidence for expansion of extant penguins out of Antarctica due to global cooling". Proc Biol Sci. 273 (1582): 11–17. PMC 1560011Freely accessible. PMID 16519228. doi:10.1098/rspb.2005.3260. 
  4. ^ Jouventin P (1982). "Visual and vocal signals in penguins, their evolution and adaptive characters". Adv. Ethol. 24: 1–149. 
  5. ^ a b "Zoological Nomenclature Resource: Ciconiiformes (Version 9.004)". www.zoonomen.net. 2008-07-05. 
  6. ^ University of Michigan Museum of Zoology. "Aptenodytes forsteri". Retrieved 2008-01-01. 

External links




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